Grevillea juniperina: Difference between revisions
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==Taxonomy== |
==Taxonomy== |
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[[File:GrevjunMorongCk1.JPG|thumb|right|Low spreading habit of a form growing in [[Kanangra-Boyd National Park]]|alt=Low spreading shrub]] |
[[File:GrevjunMorongCk1.JPG|thumb|right|Low spreading habit of a form growing in [[Kanangra-Boyd National Park]]|alt=Low spreading shrub]] |
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The [[type (biology)|type specimen]] for this species was collected from the [[Port Jackson]] area (Sydney district) and was described by botanist [[Robert Brown (botanist, born 1773)|Robert Brown]] in 1810, who gave it the specific epithet ''juniperina'' that alludes to its [[juniper|juniper-like]] foliage.<ref name=olde95>{{cite book |author1=Olde, Peter |author2=Marriott, Neil | year = 1995 | title = The Grevillea Book | volume= 2 | publisher = Kangaroo Press | location = Sydney, New South Wales | isbn = 0-86417-325-3|page = 40}}</ref> Likewise, it is commonly known as juniper- or juniper-leaf grevillea, as well as prickly spider-flower.<ref name=Fairley>{{cite book |author1=Fairley, Alan |author2=Moore, Philip |title=Native Plants of the Sydney District:An Identification Guide |year=2000 |edition= 2nd|publisher=Kangaroo Press |page=168|location=Kenthurst, New South Wales |isbn=0-7318-1031-7}}</ref> The [[Type (biology)#Lectotype|lectotype]] was selected by [[Donald McGillivray|Don MacGillivray]] in 1993 from a collection by [[George Caley]] in 1803 11 |
The [[type (biology)|type specimen]] for this species was collected from the [[Port Jackson]] area (Sydney district) and was described by botanist [[Robert Brown (botanist, born 1773)|Robert Brown]] in 1810, who gave it the specific epithet ''juniperina'' that alludes to its [[juniper|juniper-like]] foliage.<ref name=olde95>{{cite book |author1=Olde, Peter |author2=Marriott, Neil | year = 1995 | title = The Grevillea Book | volume= 2 | publisher = Kangaroo Press | location = Sydney, New South Wales | isbn = 0-86417-325-3|page = 40}}</ref> Likewise, it is commonly known as juniper- or juniper-leaf grevillea, as well as prickly spider-flower.<ref name=Fairley>{{cite book |author1=Fairley, Alan |author2=Moore, Philip |title=Native Plants of the Sydney District:An Identification Guide |year=2000 |edition= 2nd|publisher=Kangaroo Press |page=168|location=Kenthurst, New South Wales |isbn=0-7318-1031-7}}</ref> The [[Type (biology)#Lectotype|lectotype]] was selected by [[Donald McGillivray|Don MacGillivray]] in 1993 from a collection by [[George Caley]] in 1803 {{convert|11|km|mi|abbr=on}} northwest of [[Prospect, New South Wales|Prospect]] in what is now Sydney's outer western suburbs. Brown placed it in the series ''Lissostylis'' in his 1810 work ''[[Prodromus Florae Novae Hollandiae et Insulae Van Diemen]]''.<ref name="Brown 1810">{{cite book| last = Brown | first = Robert | author-link = Robert Brown (botanist, born 1773) | year = 1810 | title = Prodromus Florae Novae Hollandiae et Insulae Van Diemen | publisher = Richard Taylor and Company | location = London, United Kingdom | language = la | pages = 376–77 | url = https://www.biodiversitylibrary.org/page/2954533 | url-status = live | archive-url = https://web.archive.org/web/20160921204950/http://biodiversitylibrary.org/page/2954533 | archive-date = 2016-09-21}}</ref> |
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English botanist and explorer [[Allan Cunningham (botanist)|Allan Cunningham]] collected what he called ''Grevillea sulphurea'' in 1822 near [[Coxs River]] in the [[Bathurst, New South Wales|Bathurst]] area, where it grew alongside ''[[Grevillea rosmarinifolia|G. rosmarinifolia]]'' and ''[[Grevillea arenaria|G. arenaria]]'' subspecies ''canescens''.<ref name=olde95a>{{cite book |author1=Olde, Peter |author2=Marriott, Neil | year = 1995 | title = The Grevillea Book | volume= 1 | publisher = Kangaroo Press | location = Sydney, New South Wales | isbn = 0-86417-326-1|pages = 221–22}}</ref> This was later synonymised with ''G. juniperina'',<ref name=olde95a/> before being recognised as a distinct subspecies.<ref name=sulphurea>{{cite web|url=http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45505|title=''Grevillea juniperina'' subsp. ''sulphurea'' Makinson, Fl. Australia 17A: 498 (2000)|last=Makinson|first=R.O.|date=2000|work=Flora of Australia Online|publisher=Commonwealth of Australia|access-date=1 July 2017|location=Canberra, ACT|archive-date=23 July 2017|archive-url=https://web.archive.org/web/20170723220152/http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45505|url-status=live}}</ref> |
English botanist and explorer [[Allan Cunningham (botanist)|Allan Cunningham]] collected what he called ''Grevillea sulphurea'' in 1822 near [[Coxs River]] in the [[Bathurst, New South Wales|Bathurst]] area, where it grew alongside ''[[Grevillea rosmarinifolia|G. rosmarinifolia]]'' and ''[[Grevillea arenaria|G. arenaria]]'' subspecies ''canescens''.<ref name=olde95a>{{cite book |author1=Olde, Peter |author2=Marriott, Neil | year = 1995 | title = The Grevillea Book | volume= 1 | publisher = Kangaroo Press | location = Sydney, New South Wales | isbn = 0-86417-326-1|pages = 221–22}}</ref> This was later synonymised with ''G. juniperina'',<ref name=olde95a/> before being recognised as a distinct subspecies.<ref name=sulphurea>{{cite web|url=http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45505|title=''Grevillea juniperina'' subsp. ''sulphurea'' Makinson, Fl. Australia 17A: 498 (2000)|last=Makinson|first=R.O.|date=2000|work=Flora of Australia Online|publisher=Commonwealth of Australia|access-date=1 July 2017|location=Canberra, ACT|archive-date=23 July 2017|archive-url=https://web.archive.org/web/20170723220152/http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45505|url-status=live}}</ref> |
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There are seven subspecies of ''Grevillea juniperina'', six of which have been recognised or described by [[Robert Owen Makinson|Bob Makinson]] of the New South Wales Herbarium in 2000:<ref name=FOA/> |
There are seven subspecies of ''Grevillea juniperina'', six of which have been recognised or described by [[Robert Owen Makinson|Bob Makinson]] of the New South Wales Herbarium in 2000:<ref name=FOA/> |
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* ''G. juniperina'' subsp. ''allojohnsonii'' <small>Makinson</small> – is found on the [[Northern Tablelands]] and [[North West Slopes]] in northern New South Wales, from [[Walcha, New South Wales|Walcha]] north to [[Tenterfield, New South Wales|Tenterfield]] and Stanhope and [[Girraween National Park]] in southern Queensland. It is a [[prostrate shrub]] to 30 |
* ''G. juniperina'' subsp. ''allojohnsonii'' <small>Makinson</small> – is found on the [[Northern Tablelands]] and [[North West Slopes]] in northern New South Wales, from [[Walcha, New South Wales|Walcha]] north to [[Tenterfield, New South Wales|Tenterfield]] and Stanhope and [[Girraween National Park]] in southern Queensland. It is a [[prostrate shrub]] to {{convert|30|cm|in|abbr=on}} high with red flowers.<ref name=sspalloj>{{cite web|title=''Grevillea juniperina'' subsp. ''allojohnsonii''|work=Plantnet: New South Wales Flora Online|publisher=National Parks & Wildlife Service NSW|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+allojohnsonii|access-date=23 September 2014|author=Makinson, R.O.|author-link=Robert Owen Makinson|archive-date=25 June 2014|archive-url=https://web.archive.org/web/20140625031906/http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+allojohnsonii|url-status=live}}</ref> |
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* ''G. juniperina'' subsp. ''amphitricha'' <small>Makinson</small> – is a prostrate or spreading shrub with yellow or orange flowers that grows to {{convert|0.2-1.2|m|ft|abbr=on|frac=8}} tall and 3 |
* ''G. juniperina'' subsp. ''amphitricha'' <small>Makinson</small> – is a prostrate or spreading shrub with yellow or orange flowers that grows to {{convert|0.2-1.2|m|ft|abbr=on|frac=8}} tall and {{convert|3|m|ft|abbr=on}} wide. It is found between [[Braidwood, New South Wales|Braidwood]] and [[Nerriga, New South Wales|Nerriga]] in the [[Shoalhaven River]] catchment on the [[Southern Tablelands]].<ref name=sspamp>{{cite web|title=''Grevillea juniperina'' subsp. ''amphitricha''|work=Plantnet: New South Wales Flora Online|publisher=National Parks & Wildlife Service NSW|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+amphitricha|access-date=23 September 2014|author=Makinson, R.O.|author-link=Robert Owen Makinson|archive-date=25 June 2014|archive-url=https://web.archive.org/web/20140625031914/http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+amphitricha|url-status=live}}</ref> |
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* ''G. juniperina'' subsp. ''fortis'' <small>Makinson</small> – is a vigorous red-flowered shrub growing to |
* ''G. juniperina'' subsp. ''fortis'' <small>Makinson</small> – is a vigorous red-flowered shrub growing to {{convert|1|–|3|m|ft|abbr=on}} tall that is found on rocky hills and slopes near watercourses—specifically along [[Ginninderra Creek]], the lower reaches of the [[Molonglo River|Molonglo]] and [[Cotter River]]s, and the [[Murrumbidgee River]] from Pine Island downstream to where it is joined by the Molonglo River—mostly within the [[Australian Capital Territory]].<ref name=fortis>{{cite web|url=http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45503|title=''Grevillea juniperina'' subsp. ''fortis'' Makinson, Fl. Australia 17A: 498 (2000)|last=Makinson|first=R.O.|date=2000|work=Flora of Australia Online|publisher=Commonwealth of Australia|access-date=25 September 2014|location=Canberra, ACT|url-status=live|archive-url=https://web.archive.org/web/20160304091904/http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45503|archive-date=4 March 2016}}</ref> |
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* ''G. juniperina'' subsp. ''juniperina'' – is endemic to [[Western Sydney]], restricted to [[clay]] soils from [[Blacktown, New South Wales|Blacktown]] west to [[Penrith, New South Wales|Penrith]] and [[Marsden Park]] and north to [[Pitt Town]]. It is listed as a ''vulnerable'' species on Schedule 2 of the [[Threatened Species Conservation Act 1995]] in New South Wales.<ref name=sspjun/> Its habitat is threatened by housing development,<ref name=Fairley/> road upgrading, inappropriate [[fire regime]]s, weed invasion, rubbish dumping and trampling either by people or cars.<ref>{{cite web|url=http://www.environment.nsw.gov.au/determinations/GrevilleaJuniperinaVulSpListing.htm|title=Grevillea juniperina subsp. juniperina (a shrub) – vulnerable species listing|author=NSW Scientific Committee|date=27 February 2011|work=Nature Conservation|publisher=Department of Environment and Heritage, New South Wales Government|access-date=24 September 2014|archive-date=2 April 2015|archive-url=https://web.archive.org/web/20150402013326/http://www3.environment.nsw.gov.au/determinations/GrevilleaJuniperinaVulSpListing.htm|url-status=live}}</ref> It grows as a spreading shrub that is 0 |
* ''G. juniperina'' subsp. ''juniperina'' – is endemic to [[Western Sydney]], restricted to [[clay]] soils from [[Blacktown, New South Wales|Blacktown]] west to [[Penrith, New South Wales|Penrith]] and [[Marsden Park]] and north to [[Pitt Town]]. It is listed as a ''vulnerable'' species on Schedule 2 of the [[Threatened Species Conservation Act 1995]] in New South Wales.<ref name=sspjun/> Its habitat is threatened by housing development,<ref name=Fairley/> road upgrading, inappropriate [[fire regime]]s, weed invasion, rubbish dumping and trampling either by people or cars.<ref>{{cite web|url=http://www.environment.nsw.gov.au/determinations/GrevilleaJuniperinaVulSpListing.htm|title=Grevillea juniperina subsp. juniperina (a shrub) – vulnerable species listing|author=NSW Scientific Committee|date=27 February 2011|work=Nature Conservation|publisher=Department of Environment and Heritage, New South Wales Government|access-date=24 September 2014|archive-date=2 April 2015|archive-url=https://web.archive.org/web/20150402013326/http://www3.environment.nsw.gov.au/determinations/GrevilleaJuniperinaVulSpListing.htm|url-status=live}}</ref> It grows as a spreading shrub that is {{convert|0.5|–|1.5|m|ft|abbr=on}} high.<ref name=sspjun>{{cite web|title=''Grevillea juniperina'' subsp. ''juniperina''|work=Plantnet: New South Wales Flora Online|publisher=National Parks & Wildlife Service NSW|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+juniperina|access-date=23 September 2014|author=Makinson, R.O.|author-link=Robert Owen Makinson|archive-date=27 October 2014|archive-url=https://web.archive.org/web/20141027133130/http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+juniperina|url-status=live}}</ref> |
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* ''G. juniperina'' subsp. ''sulphurea'' <small>(A.Cunn.) Makinson</small> (formerly var. ''trinervata'') – is a shrub up to 2 |
* ''G. juniperina'' subsp. ''sulphurea'' <small>(A.Cunn.) Makinson</small> (formerly var. ''trinervata'') – is a shrub up to {{convert|2|m|ft|abbr=on}} high that grows on [[Alluvium|alluvial]] soils and along riverbanks. It is found in the catchments of the Coxs, [[Kowmung River|Kowmung]], [[Wollondilly River|Wollondilly]] and [[Shoalhaven River]]s in the Central and Southern Tablelands, from [[Tallong]] to [[Berrima, New South Wales|Berrima]], as well as Lidsdale to Jenolan State Forest in the southwestern [[Blue Mountains (New South Wales)|Blue Mountains]].<ref name=sspsulf>{{cite web|title=''Grevillea juniperina'' subsp. ''sulphurea''|work=Plantnet: New South Wales Flora Online|publisher=National Parks & Wildlife Service NSW|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+sulphurea|access-date=23 September 2014|author=Makinson, R.O.|author-link=Robert Owen Makinson|archive-date=27 October 2014|archive-url=https://web.archive.org/web/20141027130832/http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=in&name=Grevillea~juniperina~subsp.+sulphurea|url-status=live}}</ref> It [[Hybrid (biology)|hybridises]] with ''G. juniperina'' subsp. ''trinervis'' in the southern and western Blue Mountains.<ref name=Benson2000/> |
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* ''G. juniperina'' subsp. ''trinervis'' <small>(R.Br.) Makinson</small> (formerly ''Grevillea trinervis'') – is a prickly shrub with a spreading or prostrate habit ranging from 0.5 to 1.2, or rarely 2, |
* ''G. juniperina'' subsp. ''trinervis'' <small>(R.Br.) Makinson</small> (formerly ''Grevillea trinervis'') – is a prickly shrub with a spreading or prostrate habit ranging from 0.5 to 1.2, or rarely {{convert|2,|m|in|abbr=on}}–7 ft) high and yellow, orange or red flowers.<ref name=Benson2000/> It is found in the western Blue Mountains.<ref name=trinervis>{{cite web|url=http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45500|title=''Grevillea juniperina'' subsp. ''trinervis'' Makinson, Fl. Australia 17A: 498 (2000)|last=Makinson|first=R.O.|date=2000|work=Flora of Australia Online|publisher=Commonwealth of Australia|access-date=25 September 2014|location=Canberra, ACT|url-status=live|archive-url=https://web.archive.org/web/20150402095953/http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45500|archive-date=2 April 2015}}</ref> |
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* ''G. juniperina'' subsp. ''villosa'' <small>Makinson</small> – is an upright red- or yellow-flowered shrub up to 2 |
* ''G. juniperina'' subsp. ''villosa'' <small>Makinson</small> – is an upright red- or yellow-flowered shrub up to {{convert|2|m|ft|abbr=on}} high found along watercourses in eucalypt forest east and northeast of [[Braidwood, New South Wales|Braidwood]], as well as Currockbilly in southeastern New South Wales.<ref name=villosa>{{cite web|url=http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45504|title=''Grevillea juniperina'' subsp. ''villosa'' Makinson, Fl. Australia 17A: 498 (2000)|last=Makinson|first=R.O.|date=2000|work=Flora of Australia Online|publisher=Commonwealth of Australia|access-date=25 September 2014|location=Canberra, ACT|url-status=live|archive-url=https://web.archive.org/web/20150402173203/http://www.anbg.gov.au/abrs/online-resources/flora/stddisplay.xsql?pnid=45504|archive-date=2 April 2015}}</ref> |
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==Distribution and habitat== |
==Distribution and habitat== |
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Unlike other Proteaceae generally not found on clay soils,<ref>{{cite journal|author1=Myerscough, P.J.|author2=Whelan, R.J.|author3=Bradstock, R.A.|date=2001|title=Ecology of Proteaceae with Special Reference to the Sydney Region|journal=Cunninghamia|volume=6|issue=4|pages=951–1015 [960]|url=https://www.rbgsyd.nsw.gov.au/RoyalBotanicGarden/media/RBG/Science/Cunninghamia/Volume%206%20-%202000/Volume-6(4)-2000-Cun64951Mye-1015.pdf|url-status=dead|archive-url=https://web.archive.org/web/20170316232634/https://www.rbgsyd.nsw.gov.au/RoyalBotanicGarden/media/RBG/Science/Cunninghamia/Volume%206%20-%202000/Volume-6%284%29-2000-Cun64951Mye-1015.pdf|archive-date=2017-03-16}}</ref> ''Grevillea juniperina'' subsp. ''juniperina'' is found in [[Cumberland Plain]] and Castlereagh Woodland communities on clay-loam soils, growing alongside such species as forest redgum (''[[Eucalyptus tereticornis]]''), mugga ironbark (''[[Eucalyptus sideroxylon|E. sideroxylon]]''), thin-leaved stringybark (''[[Eucalyptus eugenioides|E. eugenioides]]''), broad-leaved red ironbark (''[[Eucalyptus fibrosa|E. fibrosa]]''), grey box (''[[Eucalyptus moluccana|E. moluccana]]''), white feather honeymyrtle (''[[Melaleuca decora]]''), boxthorn (''[[Bursaria spinosa]]''), sickle wattle (''[[Acacia falcata]]'') and ''[[Dillwynia tenuifolia]]''. ''Grevillea juniperina'' subsp. ''sulphurea'' is found on gravelly alluvial soil alongside ''[[Leptospermum]]'' species, and ''G. juniperina'' subsp. ''trinervis'' is found on alluvial soil with poor drainage in [[woodland]] or along riverbanks in association with snow gum (''[[Eucalyptus pauciflora]]''), mountain gum (''[[Eucalyptus dalrympleana|E. dalrympleana]]''), ''[[Dillwynia retorta]]'' and river lomatia (''[[Lomatia myricoides]]'').<ref name=Benson2000>{{cite journal|author1=Benson, Doug |author2=McDougall, Lyn |year=2000 |title=Ecology of Sydney Plant Species Part 7b: Dicotyledon families Proteaceae to Rubiaceae |journal=Cunninghamia |volume=6 |issue=4 |pages=1017–1202 [1058–59] |url=http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0017/58220/Cun6Ben1016.pdf |archive-url=http://webarchive.loc.gov/all/20090627040701/http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0017/58220/Cun6Ben1016.pdf |url-status=dead |archive-date=2009-06-27 }}</ref> The annual rainfall in regions where ''G. juniperina'' grows is 600 |
Unlike other Proteaceae generally not found on clay soils,<ref>{{cite journal|author1=Myerscough, P.J.|author2=Whelan, R.J.|author3=Bradstock, R.A.|date=2001|title=Ecology of Proteaceae with Special Reference to the Sydney Region|journal=Cunninghamia|volume=6|issue=4|pages=951–1015 [960]|url=https://www.rbgsyd.nsw.gov.au/RoyalBotanicGarden/media/RBG/Science/Cunninghamia/Volume%206%20-%202000/Volume-6(4)-2000-Cun64951Mye-1015.pdf|url-status=dead|archive-url=https://web.archive.org/web/20170316232634/https://www.rbgsyd.nsw.gov.au/RoyalBotanicGarden/media/RBG/Science/Cunninghamia/Volume%206%20-%202000/Volume-6%284%29-2000-Cun64951Mye-1015.pdf|archive-date=2017-03-16}}</ref> ''Grevillea juniperina'' subsp. ''juniperina'' is found in [[Cumberland Plain]] and Castlereagh Woodland communities on clay-loam soils, growing alongside such species as forest redgum (''[[Eucalyptus tereticornis]]''), mugga ironbark (''[[Eucalyptus sideroxylon|E. sideroxylon]]''), thin-leaved stringybark (''[[Eucalyptus eugenioides|E. eugenioides]]''), broad-leaved red ironbark (''[[Eucalyptus fibrosa|E. fibrosa]]''), grey box (''[[Eucalyptus moluccana|E. moluccana]]''), white feather honeymyrtle (''[[Melaleuca decora]]''), boxthorn (''[[Bursaria spinosa]]''), sickle wattle (''[[Acacia falcata]]'') and ''[[Dillwynia tenuifolia]]''. ''Grevillea juniperina'' subsp. ''sulphurea'' is found on gravelly alluvial soil alongside ''[[Leptospermum]]'' species, and ''G. juniperina'' subsp. ''trinervis'' is found on alluvial soil with poor drainage in [[woodland]] or along riverbanks in association with snow gum (''[[Eucalyptus pauciflora]]''), mountain gum (''[[Eucalyptus dalrympleana|E. dalrympleana]]''), ''[[Dillwynia retorta]]'' and river lomatia (''[[Lomatia myricoides]]'').<ref name=Benson2000>{{cite journal|author1=Benson, Doug |author2=McDougall, Lyn |year=2000 |title=Ecology of Sydney Plant Species Part 7b: Dicotyledon families Proteaceae to Rubiaceae |journal=Cunninghamia |volume=6 |issue=4 |pages=1017–1202 [1058–59] |url=http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0017/58220/Cun6Ben1016.pdf |archive-url=http://webarchive.loc.gov/all/20090627040701/http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0017/58220/Cun6Ben1016.pdf |url-status=dead |archive-date=2009-06-27 }}</ref> The annual rainfall in regions where ''G. juniperina'' grows is {{convert|600|to|800|mm|in|abbr=on}}.<ref name=olde95/> |
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==Ecology== |
==Ecology== |
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Killed by [[Bushfires in Australia|bushfire]], ''Grevillea juniperina'' regenerates afterwards by seeds that germinate after lying dormant in the soil,<ref name=Benson2000/> stimulated by exposure to heat and smoke. Plants over 1 |
Killed by [[Bushfires in Australia|bushfire]], ''Grevillea juniperina'' regenerates afterwards by seeds that germinate after lying dormant in the soil,<ref name=Benson2000/> stimulated by exposure to heat and smoke. Plants over {{convert|1|m|ft|abbr=on}} high produce more seed. Intervals of 10 to 15 years between fires are thought to be most beneficial for the species' survival, as this allows seed numbers to build up in the soil over time.<ref name=nswts>{{cite web|url=http://www.environment.nsw.gov.au/threatenedspeciesapp/profile.aspx?id=10367|title=Juniper-leaved Grevillea – profile|author=NSW Scientific Committee|date=7 September 2012|work=Nature Conservation|publisher=Department of Environment and Heritage, New South Wales Government|access-date=16 March 2015|archive-date=2 April 2015|archive-url=https://web.archive.org/web/20150402094513/http://www.environment.nsw.gov.au/threatenedspeciesapp/profile.aspx?id=10367|url-status=live}}</ref><!-- cites previous 3 sentences --> ''Grevillea juniperina'' can also colonise disturbed areas, though overgrowth of ''Bursaria spinosa'' can negatively impact its spread.<ref name=nswts/> |
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''Grevillea juniperina'' is pollinated by birds,<ref name=Benson2000/> with bees also recorded visiting flowers.<ref name=nswts/> The leaves are food for caterpillars of the cyprotus blue butterfly (''[[Candalides cyprotus]]'').<ref name="Edwards01">{{cite book|author1=Edwards, E. D.|author2=Newland, J.|author3=Regan, L.|title=Lepidoptera|publisher=CSIRO Publishing|location=Collingwood, Victoria|date=2001|volume=31: Hesperioidea, Papilionoidea|pages=136|isbn=978-0643067004|url=https://books.google.com/books?id=iVHDuVVelGMC&q=%22Grevillea+juniperina%22&pg=PA136}}</ref> A [[springtail]] species of Australian origin—''Calvatomina superba''—was found on ''Grevillea juniperina'' cultivated at the [[Lost Gardens of Heligan]] in Cornwall.<ref>{{cite book|last=Ardron|first=Paul A.|title=Exotic and Invasive Plants and Animals|editor=Rotherham, Ian|publisher=Wildtrack Publishing|location=Sheffield, United Kingdom|date=2009|series=International Urban Ecology Review|volume=4|pages=13|isbn=978-1-904098-16-4}}</ref> |
''Grevillea juniperina'' is pollinated by birds,<ref name=Benson2000/> with bees also recorded visiting flowers.<ref name=nswts/> The leaves are food for caterpillars of the cyprotus blue butterfly (''[[Candalides cyprotus]]'').<ref name="Edwards01">{{cite book|author1=Edwards, E. D.|author2=Newland, J.|author3=Regan, L.|title=Lepidoptera|publisher=CSIRO Publishing|location=Collingwood, Victoria|date=2001|volume=31: Hesperioidea, Papilionoidea|pages=136|isbn=978-0643067004|url=https://books.google.com/books?id=iVHDuVVelGMC&q=%22Grevillea+juniperina%22&pg=PA136}}</ref> A [[springtail]] species of Australian origin—''Calvatomina superba''—was found on ''Grevillea juniperina'' cultivated at the [[Lost Gardens of Heligan]] in Cornwall.<ref>{{cite book|last=Ardron|first=Paul A.|title=Exotic and Invasive Plants and Animals|editor=Rotherham, Ian|publisher=Wildtrack Publishing|location=Sheffield, United Kingdom|date=2009|series=International Urban Ecology Review|volume=4|pages=13|isbn=978-1-904098-16-4}}</ref> |
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Cultivars include: |
Cultivars include: |
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* 'Allyn Radiance' – derived from a prostrate orange and prostrate red forms of ''G. juniperina''.<ref name=PBR>{{cite web|title=Plant Breeders Rights – Database|publisher=IP Australia|url=http://pericles.ipaustralia.gov.au/pbr_db/search.cfm|access-date=26 September 2014|archive-date=21 August 2017|archive-url=https://web.archive.org/web/20170821111007/http://pericles.ipaustralia.gov.au/pbr_db/search.cfm|url-status=live}}</ref> |
* 'Allyn Radiance' – derived from a prostrate orange and prostrate red forms of ''G. juniperina''.<ref name=PBR>{{cite web|title=Plant Breeders Rights – Database|publisher=IP Australia|url=http://pericles.ipaustralia.gov.au/pbr_db/search.cfm|access-date=26 September 2014|archive-date=21 August 2017|archive-url=https://web.archive.org/web/20170821111007/http://pericles.ipaustralia.gov.au/pbr_db/search.cfm|url-status=live}}</ref> |
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* 'Audrey' – ''G. juniperina'' crossed with ''[[Grevillea victoriae|G. victoriae]]''. Bred in 1957 by [[George Althofer]], who named it after his wife. It grows to 2 |
* 'Audrey' – ''G. juniperina'' crossed with ''[[Grevillea victoriae|G. victoriae]]''. Bred in 1957 by [[George Althofer]], who named it after his wife. It grows to {{convert|2|m|ft|abbr=on}} high and wide and produces orange-red flowers over many months. It is popular in South Africa and the USA.{{sfn|Wrigley|Fagg|1991|p=209}} |
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* 'Canberra Gem' – ''G. juniperina'' crossed with ''[[Grevillea rosmarinifolia|G. rosmarinifolia]]''. Registered with the [[Australian Cultivar Registration Authority]] in 1976.<ref name=ACRA092>{{cite web|title=''Grevillea'' 'Canberra Gem'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc092.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150329045311/http://anbg.gov.au/acra/descriptions/acc092.html|archive-date=29 March 2015}}</ref> |
* 'Canberra Gem' – ''G. juniperina'' crossed with ''[[Grevillea rosmarinifolia|G. rosmarinifolia]]''. Registered with the [[Australian Cultivar Registration Authority]] in 1976.<ref name=ACRA092>{{cite web|title=''Grevillea'' 'Canberra Gem'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc092.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150329045311/http://anbg.gov.au/acra/descriptions/acc092.html|archive-date=29 March 2015}}</ref> |
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* 'Canterbury Gold' – prostrate yellow form of ''G. juniperina'' crossed with ''[[Grevillea parvula]]''.<ref name=ACRA156>{{cite web|title=''Grevillea'' 'Canterbury Gold'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc156.html|access-date=1 February 2013|url-status=live|archive-url=https://web.archive.org/web/20130205175249/http://www.anbg.gov.au/acra/descriptions/acc156.html|archive-date=5 February 2013}}</ref> |
* 'Canterbury Gold' – prostrate yellow form of ''G. juniperina'' crossed with ''[[Grevillea parvula]]''.<ref name=ACRA156>{{cite web|title=''Grevillea'' 'Canterbury Gold'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc156.html|access-date=1 February 2013|url-status=live|archive-url=https://web.archive.org/web/20130205175249/http://www.anbg.gov.au/acra/descriptions/acc156.html|archive-date=5 February 2013}}</ref> |
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* 'Old Gold' – a low spreading shrub with yellow new growth, lobed leaves and greyish-yellow flowers with pink styles. It is derived from ''G. juniperina'' crossed with ''[[Grevillea ilicifolia]]''.<ref name=ACRA286>{{cite web|title=''Grevillea'' 'Old Gold'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc286.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330054732/http://anbg.gov.au/acra/descriptions/acc286.html|archive-date=30 March 2015}}</ref> |
* 'Old Gold' – a low spreading shrub with yellow new growth, lobed leaves and greyish-yellow flowers with pink styles. It is derived from ''G. juniperina'' crossed with ''[[Grevillea ilicifolia]]''.<ref name=ACRA286>{{cite web|title=''Grevillea'' 'Old Gold'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc286.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330054732/http://anbg.gov.au/acra/descriptions/acc286.html|archive-date=30 March 2015}}</ref> |
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* 'Orange Box' – ''G. juniperina'' crossed with ''G. victoriae''.<ref name=PBR/> |
* 'Orange Box' – ''G. juniperina'' crossed with ''G. victoriae''.<ref name=PBR/> |
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* 'Pink Lady' – ''G. juniperina'' crossed with ''G. rosmarinifolia''. Bred by Stan Kirby of [[Queanbeyan]], it was grown widely in the early 1970s.{{sfn|Wrigley|Fagg|1991|pp=297-98}} A shrub to 60 |
* 'Pink Lady' – ''G. juniperina'' crossed with ''G. rosmarinifolia''. Bred by Stan Kirby of [[Queanbeyan]], it was grown widely in the early 1970s.{{sfn|Wrigley|Fagg|1991|pp=297-98}} A shrub to {{convert|60|cm|ft|abbr=on}} high and {{convert|3|m|ft|abbr=on}} wide with pale pink flowers.<ref name="TurnerWasson2001">{{cite book|author1=Turner, R.G|author2=Wasson, Ernie|title=Botanica: The Illustrated A-Z of Over 10,000 Garden Plants|year=2001|publisher=Barnes and Noble|location=New York|page=[https://archive.org/details/botanicaillustra0000unse/page/413 413]|isbn=0760716420|url-access=registration|url=https://archive.org/details/botanicaillustra0000unse/page/413}}</ref> |
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* 'Poorinda Adorning' – a seedling that grew in Hodge's garden, registered in 1978.<ref name=ACRA066>{{cite web|title=''Grevillea'' 'Poorinda Adorning'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc066.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20140831205405/http://anbg.gov.au/acra/descriptions/acc066.html|archive-date=31 August 2014}}</ref> The original plant grew in 1965.{{sfn|Wrigley|Fagg|1991|p=301}} |
* 'Poorinda Adorning' – a seedling that grew in Hodge's garden, registered in 1978.<ref name=ACRA066>{{cite web|title=''Grevillea'' 'Poorinda Adorning'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc066.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20140831205405/http://anbg.gov.au/acra/descriptions/acc066.html|archive-date=31 August 2014}}</ref> The original plant grew in 1965.{{sfn|Wrigley|Fagg|1991|p=301}} |
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* 'Poorinda Annette' – a cross with the small-flowered form of ''[[Grevillea alpina]]''.<ref name=ACRA067>{{cite web|title=''Grevillea'' 'Poorinda Annette'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc067.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330055002/http://anbg.gov.au/acra/descriptions/acc067.html|archive-date=30 March 2015}}</ref> |
* 'Poorinda Annette' – a cross with the small-flowered form of ''[[Grevillea alpina]]''.<ref name=ACRA067>{{cite web|title=''Grevillea'' 'Poorinda Annette'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc067.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330055002/http://anbg.gov.au/acra/descriptions/acc067.html|archive-date=30 March 2015}}</ref> |
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* 'Poorinda Belinda' – a cross with a hybrid of the yellow flower form of ''[[Grevillea obtusiflora]]'' and ''Grevillea alpina''.<ref name=ACRA010>{{cite web|title=''Grevillea'' 'Poorinda Belinda'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc010.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330055037/http://anbg.gov.au/acra/descriptions/acc010.html|archive-date=30 March 2015}}</ref> |
* 'Poorinda Belinda' – a cross with a hybrid of the yellow flower form of ''[[Grevillea obtusiflora]]'' and ''Grevillea alpina''.<ref name=ACRA010>{{cite web|title=''Grevillea'' 'Poorinda Belinda'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc010.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330055037/http://anbg.gov.au/acra/descriptions/acc010.html|archive-date=30 March 2015}}</ref> |
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* 'Poorinda Constance' – a cross with ''Grevillea victoriae''.<ref name=ACRA040>{{cite web|title=''Grevillea'' 'Poorinda Constance'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc040.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330055141/http://anbg.gov.au/acra/descriptions/acc040.html|archive-date=30 March 2015}}</ref> |
* 'Poorinda Constance' – a cross with ''Grevillea victoriae''.<ref name=ACRA040>{{cite web|title=''Grevillea'' 'Poorinda Constance'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc040.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330055141/http://anbg.gov.au/acra/descriptions/acc040.html|archive-date=30 March 2015}}</ref> |
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* 'Poorinda Jeanie' – a red-flowering shrub that grows up to 2 |
* 'Poorinda Jeanie' – a red-flowering shrub that grows up to {{convert|2|m|ft|abbr=on}} high. It is derived from a cross with ''Grevillea alpina''.<ref name=ACRA089>{{cite web|title=''Grevillea'' 'Poorinda Jeanie'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc089.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173428/http://anbg.gov.au/acra/descriptions/acc089.html|archive-date=30 March 2015}}</ref> |
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* 'Poorinda Leane' – a cross with ''G. victoriae''. It is a spreading shrub to 4 |
* 'Poorinda Leane' – a cross with ''G. victoriae''. It is a spreading shrub to {{convert|4|m|ft|abbr=on}} high with buff or apricot flowers.<ref name=ACRA037>{{cite web|title=''Grevillea'' 'Poorinda Leane'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc037.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173509/http://anbg.gov.au/acra/descriptions/acc037.html|archive-date=30 March 2015}}</ref> |
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* 'Poorinda Pink Coral' – a cross with ''G. victoriae'', named for the colour of its flowers.<ref name=ACRA056>{{cite web|title=''Grevillea'' 'Poorinda Pink Coral'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc056.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173557/http://anbg.gov.au/acra/descriptions/acc056.html|archive-date=30 March 2015}}</ref> |
* 'Poorinda Pink Coral' – a cross with ''G. victoriae'', named for the colour of its flowers.<ref name=ACRA056>{{cite web|title=''Grevillea'' 'Poorinda Pink Coral'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc056.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173557/http://anbg.gov.au/acra/descriptions/acc056.html|archive-date=30 March 2015}}</ref> |
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* '[[Grevillea 'Poorinda Queen'|Poorinda Queen]]' – derived from a cross with a yellow-flowered form of ''Grevillea victoriae''. It has apricot-pink flowers.<ref name=ACRA036>{{cite web|title=''Grevillea 'Poorinda Queen'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc036.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173607/http://anbg.gov.au/acra/descriptions/acc036.html|archive-date=30 March 2015}}</ref> |
* '[[Grevillea 'Poorinda Queen'|Poorinda Queen]]' – derived from a cross with a yellow-flowered form of ''Grevillea victoriae''. It has apricot-pink flowers.<ref name=ACRA036>{{cite web|title=''Grevillea 'Poorinda Queen'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc036.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173607/http://anbg.gov.au/acra/descriptions/acc036.html|archive-date=30 March 2015}}</ref> |
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* 'Poorinda Refrain' – a cross with ''[[Grevillea floribunda]]''.<ref name=ACRA046>{{cite web|title=''Grevillea'' 'Poorinda Refrain'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc046.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173642/http://anbg.gov.au/acra/descriptions/acc046.html|archive-date=30 March 2015}}</ref> |
* 'Poorinda Refrain' – a cross with ''[[Grevillea floribunda]]''.<ref name=ACRA046>{{cite web|title=''Grevillea'' 'Poorinda Refrain'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc046.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173642/http://anbg.gov.au/acra/descriptions/acc046.html|archive-date=30 March 2015}}</ref> |
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* 'Poorinda Rachel' – a 1 |
* 'Poorinda Rachel' – a {{convert|1|m|ft|abbr=on}} high hybrid cross with ''Grevillea alpina'', which has buff-cerise flowers, and was developed in 1965–66.<ref name="tully 1977"/> |
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* 'Poorinda Rosalie' – a taller rose-red flowered hybrid with ''G. victoriae'', developed in 1967–68.<ref name="tully 1977"/> |
* 'Poorinda Rosalie' – a taller rose-red flowered hybrid with ''G. victoriae'', developed in 1967–68.<ref name="tully 1977"/> |
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* 'Poorinda Signet' – a cross with ''[[Grevillea lanigera]]''.<ref name=ACRA099>{{cite web|title=''Grevillea'' 'Poorinda Signet'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc009.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173834/http://anbg.gov.au/acra/descriptions/acc009.html|archive-date=30 March 2015}}</ref> |
* 'Poorinda Signet' – a cross with ''[[Grevillea lanigera]]''.<ref name=ACRA099>{{cite web|title=''Grevillea'' 'Poorinda Signet'|work=List of Registered Cultivars derived from Australian native flora|publisher=[[Australian Cultivar Registration Authority]]|url=http://www.anbg.gov.au/acra/descriptions/acc009.html|access-date=26 September 2014|url-status=live|archive-url=https://web.archive.org/web/20150330173834/http://anbg.gov.au/acra/descriptions/acc009.html|archive-date=30 March 2015}}</ref> |
Revision as of 08:09, 25 October 2021
Grevillea juniperina | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Order: | Proteales |
Family: | Proteaceae |
Genus: | Grevillea |
Species: | G. juniperina
|
Binomial name | |
Grevillea juniperina |
Grevillea juniperina, commonly known as juniper- or juniper-leaf grevillea or prickly spider-flower, is a plant of the family Proteaceae native to eastern New South Wales and southeastern Queensland in Australia. Scottish botanist Robert Brown described the species in 1810, and seven subspecies are recognised. One subspecies, G. j. juniperina, is restricted to Western Sydney and environs and is threatened by loss of habitat and housing development.
A small, prickly-leaved shrub between 0.2–3 m (0.66–9.84 ft) high, G. juniperina generally grows on clay-based or alluvial soils in eucalypt woodland. The flower heads, known as inflorescences, appear from winter to early summer and are red, orange or yellow. Birds visit and pollinate the flowers. Grevillea juniperina plants are killed by bushfire, regenerating afterwards from seed. Grevillea juniperina adapts readily to cultivation and has been important in horticulture as it is the parent of many popular garden hybrids.
Description
Grevillea juniperina has a spreading or erect habit (growth form) and it grows to between 0.2–3 m (0.66–9.84 ft) in height. The branchlets are thick and sturdy. The prickly leaves are generally stiff and are 0.5–3.5 cm (1⁄4–1+3⁄8 in) long and 0.5–6 mm (1⁄32–1⁄4 in) wide. They are crowded along the stems. Flowering occurs throughout the year, peaking between midwinter and early summer, though it varies between the different subspecies. Subspecies allojohnsonii flowers from September to February,[3] subspecies trinervis flowers from August to December,[4] and subspecies juniperina, amphitricha, sulphurea, villosa and fortis flower in August and September.[5][6][7][8][9] The spider-flower arrangement of the inflorescence has several individual flowers emerging from a central rounded flower head—reminiscent of the legs of a spider.[10] The flowers are red, pink, orange, yellow or greenish, and are mostly terminal—arising on the ends of stems—though they occasionally arise from axillary buds. They are 2.5–3.5 cm (1–1+3⁄8 in) long.[11][12] The perianth is finely furred on the outside, while the pistil is smooth; it is 1.5–2.7 cm (5⁄8–1+1⁄8 in) long. Flowering is followed by the development of seed pods, each capsule is 10–18 mm (3⁄8–3⁄4 in) long, and releases one or two seeds when ripe.[13] The narrow oval seed is 7.5–12 mm (1⁄4–1⁄2 in) and 2.2–3.3 mm (1⁄16–1⁄8 in) wide, with a swelling at the apex and a short wing. Both surfaces are covered with tiny hairs.[14]
Similar species include the Wingello grevillea (Grevillea molyneuxii), which can be distinguished by its prominent midvein on the leaf undersurface, and the red spider-flower (G. speciosa), which has wider leaves with lateral veins and longer pistil.[14]
Taxonomy
The type specimen for this species was collected from the Port Jackson area (Sydney district) and was described by botanist Robert Brown in 1810, who gave it the specific epithet juniperina that alludes to its juniper-like foliage.[14] Likewise, it is commonly known as juniper- or juniper-leaf grevillea, as well as prickly spider-flower.[15] The lectotype was selected by Don MacGillivray in 1993 from a collection by George Caley in 1803 11 km (6.8 mi) northwest of Prospect in what is now Sydney's outer western suburbs. Brown placed it in the series Lissostylis in his 1810 work Prodromus Florae Novae Hollandiae et Insulae Van Diemen.[16]
English botanist and explorer Allan Cunningham collected what he called Grevillea sulphurea in 1822 near Coxs River in the Bathurst area, where it grew alongside G. rosmarinifolia and G. arenaria subspecies canescens.[17] This was later synonymised with G. juniperina,[17] before being recognised as a distinct subspecies.[18]
George Bentham placed G. juniperina in Section Lissostylis in his 1870 Flora Australiensis. This section has become the Linearifolia group of 45 species of shrub in southeastern Australia.[19] Within this group, G. juniperina is classified in the Speciosa subgroup, five species of bird-pollinated grevilleas found in eastern Australia. The others are G. molyneuxii, G. dimorpha, G. oleoides and G. speciosa.[20]
There are seven subspecies of Grevillea juniperina, six of which have been recognised or described by Bob Makinson of the New South Wales Herbarium in 2000:[12]
- G. juniperina subsp. allojohnsonii Makinson – is found on the Northern Tablelands and North West Slopes in northern New South Wales, from Walcha north to Tenterfield and Stanhope and Girraween National Park in southern Queensland. It is a prostrate shrub to 30 cm (12 in) high with red flowers.[3]
- G. juniperina subsp. amphitricha Makinson – is a prostrate or spreading shrub with yellow or orange flowers that grows to 0.2–1.2 m (5⁄8–3+7⁄8 ft) tall and 3 m (9.8 ft) wide. It is found between Braidwood and Nerriga in the Shoalhaven River catchment on the Southern Tablelands.[7]
- G. juniperina subsp. fortis Makinson – is a vigorous red-flowered shrub growing to 1–3 m (3.3–9.8 ft) tall that is found on rocky hills and slopes near watercourses—specifically along Ginninderra Creek, the lower reaches of the Molonglo and Cotter Rivers, and the Murrumbidgee River from Pine Island downstream to where it is joined by the Molonglo River—mostly within the Australian Capital Territory.[8]
- G. juniperina subsp. juniperina – is endemic to Western Sydney, restricted to clay soils from Blacktown west to Penrith and Marsden Park and north to Pitt Town. It is listed as a vulnerable species on Schedule 2 of the Threatened Species Conservation Act 1995 in New South Wales.[5] Its habitat is threatened by housing development,[15] road upgrading, inappropriate fire regimes, weed invasion, rubbish dumping and trampling either by people or cars.[21] It grows as a spreading shrub that is 0.5–1.5 m (1.6–4.9 ft) high.[5]
- G. juniperina subsp. sulphurea (A.Cunn.) Makinson (formerly var. trinervata) – is a shrub up to 2 m (6.6 ft) high that grows on alluvial soils and along riverbanks. It is found in the catchments of the Coxs, Kowmung, Wollondilly and Shoalhaven Rivers in the Central and Southern Tablelands, from Tallong to Berrima, as well as Lidsdale to Jenolan State Forest in the southwestern Blue Mountains.[6] It hybridises with G. juniperina subsp. trinervis in the southern and western Blue Mountains.[13]
- G. juniperina subsp. trinervis (R.Br.) Makinson (formerly Grevillea trinervis) – is a prickly shrub with a spreading or prostrate habit ranging from 0.5 to 1.2, or rarely 2 m (79 in)–7 ft) high and yellow, orange or red flowers.[13] It is found in the western Blue Mountains.[4]
- G. juniperina subsp. villosa Makinson – is an upright red- or yellow-flowered shrub up to 2 m (6.6 ft) high found along watercourses in eucalypt forest east and northeast of Braidwood, as well as Currockbilly in southeastern New South Wales.[9]
Distribution and habitat
Unlike other Proteaceae generally not found on clay soils,[22] Grevillea juniperina subsp. juniperina is found in Cumberland Plain and Castlereagh Woodland communities on clay-loam soils, growing alongside such species as forest redgum (Eucalyptus tereticornis), mugga ironbark (E. sideroxylon), thin-leaved stringybark (E. eugenioides), broad-leaved red ironbark (E. fibrosa), grey box (E. moluccana), white feather honeymyrtle (Melaleuca decora), boxthorn (Bursaria spinosa), sickle wattle (Acacia falcata) and Dillwynia tenuifolia. Grevillea juniperina subsp. sulphurea is found on gravelly alluvial soil alongside Leptospermum species, and G. juniperina subsp. trinervis is found on alluvial soil with poor drainage in woodland or along riverbanks in association with snow gum (Eucalyptus pauciflora), mountain gum (E. dalrympleana), Dillwynia retorta and river lomatia (Lomatia myricoides).[13] The annual rainfall in regions where G. juniperina grows is 600 to 800 mm (24 to 31 in).[14]
Ecology
Killed by bushfire, Grevillea juniperina regenerates afterwards by seeds that germinate after lying dormant in the soil,[13] stimulated by exposure to heat and smoke. Plants over 1 m (3.3 ft) high produce more seed. Intervals of 10 to 15 years between fires are thought to be most beneficial for the species' survival, as this allows seed numbers to build up in the soil over time.[23] Grevillea juniperina can also colonise disturbed areas, though overgrowth of Bursaria spinosa can negatively impact its spread.[23]
Grevillea juniperina is pollinated by birds,[13] with bees also recorded visiting flowers.[23] The leaves are food for caterpillars of the cyprotus blue butterfly (Candalides cyprotus).[24] A springtail species of Australian origin—Calvatomina superba—was found on Grevillea juniperina cultivated at the Lost Gardens of Heligan in Cornwall.[25]
Cultivation
Allan Cunningham sent seed of G. juniperina to England in 1820; it was grown there the following year. Baron Charles von Hügel grew the species in Vienna in 1831. It has been grown outdoors in southern England, particularly G. juniperina subspecies sulphurea.[14] Grevillea juniperina adapts easily to cultivation and grows in a wide range of soils and aspects in locations with good drainage.[26] Long-flowering, it attracts birds such as honeyeaters with its nectar. The prickly dense foliage is also a good nesting site and shelter,[27] particularly for smaller birds, such as finches.[28] Many forms and hybrids have been commercially propagated and sold, some having more horticultural appeal than others. Low winter temperatures promote more prolific flowering and pruning promotes dense foliage.[14] Plants are readily propagated by cuttings or seed,[29] although propagation by cuttings is required to ensure the new plants have the same characteristics of the parent.[27] Direct contact with the plant may cause a skin rash.[30]
Many cultivars have been selected for horticultural use, either selected forms or hybrids with other Grevillea species. One prominent early breeder was Leo Hodge of W Tree, Victoria. Hodge became interested in breeding grevilleas after finding seedlings in his garden. His first trials involved crossing G. juniperina with G. victoriae, producing G. 'Poorinda Queen', which was the first to flower, followed by G. 'Poorinda Constance', G. 'Poorinda Leane' and G. 'Poorinda Pink Coral' respectively, all in 1952.[31]
Cultivars include:
- 'Allyn Radiance' – derived from a prostrate orange and prostrate red forms of G. juniperina.[32]
- 'Audrey' – G. juniperina crossed with G. victoriae. Bred in 1957 by George Althofer, who named it after his wife. It grows to 2 m (6.6 ft) high and wide and produces orange-red flowers over many months. It is popular in South Africa and the USA.[33]
- 'Canberra Gem' – G. juniperina crossed with G. rosmarinifolia. Registered with the Australian Cultivar Registration Authority in 1976.[34]
- 'Canterbury Gold' – prostrate yellow form of G. juniperina crossed with Grevillea parvula.[35]
- 'Goldfever' – G. juniperina crossed with Grevillea rhyolitica.[32]
- 'H22' (Gold Cluster[36]) – a dense growing prostrate selection with yellow flowers.[37]
- 'Lunar Light' – a low-growing form with variegated leaves and orange-pink flowers.[38] It is suitable for rockeries.[39]
- 'Molonglo' – a form with a low–spreading habit and larger orange flowers with red styles. It was bred by Rudolph Willing of Australian National University in 1964,[39] from two disparate forms of juniperina, an erect red-flowered form from around Canberra and a yellow-flowered spreading prostrate form from the western slopes of the Budawang Range in 1964.[40] It is named after the Molonglo River.[39]
- 'New Blood' – a compact red-flowered shrub resulting from a cross of 'Molonglo' cultivar with G. rhyolitica.[41]
- 'Old Gold' – a low spreading shrub with yellow new growth, lobed leaves and greyish-yellow flowers with pink styles. It is derived from G. juniperina crossed with Grevillea ilicifolia.[42]
- 'Orange Box' – G. juniperina crossed with G. victoriae.[32]
- 'Pink Lady' – G. juniperina crossed with G. rosmarinifolia. Bred by Stan Kirby of Queanbeyan, it was grown widely in the early 1970s.[43] A shrub to 60 cm (2.0 ft) high and 3 m (9.8 ft) wide with pale pink flowers.[44]
- 'Poorinda Adorning' – a seedling that grew in Hodge's garden, registered in 1978.[45] The original plant grew in 1965.[46]
- 'Poorinda Annette' – a cross with the small-flowered form of Grevillea alpina.[47]
- 'Poorinda Beauty' – a cross with Grevillea alpina.[48]
- 'Poorinda Belinda' – a cross with a hybrid of the yellow flower form of Grevillea obtusiflora and Grevillea alpina.[49]
- 'Poorinda Constance' – a cross with Grevillea victoriae.[50]
- 'Poorinda Jeanie' – a red-flowering shrub that grows up to 2 m (6.6 ft) high. It is derived from a cross with Grevillea alpina.[51]
- 'Poorinda Leane' – a cross with G. victoriae. It is a spreading shrub to 4 m (13 ft) high with buff or apricot flowers.[52]
- 'Poorinda Pink Coral' – a cross with G. victoriae, named for the colour of its flowers.[53]
- 'Poorinda Queen' – derived from a cross with a yellow-flowered form of Grevillea victoriae. It has apricot-pink flowers.[54]
- 'Poorinda Refrain' – a cross with Grevillea floribunda.[55]
- 'Poorinda Rachel' – a 1 m (3.3 ft) high hybrid cross with Grevillea alpina, which has buff-cerise flowers, and was developed in 1965–66.[31]
- 'Poorinda Rosalie' – a taller rose-red flowered hybrid with G. victoriae, developed in 1967–68.[31]
- 'Poorinda Signet' – a cross with Grevillea lanigera.[56]
- × semperflorens – a hybrid of English origin derived from a cross of Grevillea juniperina var. sulphurea with Grevillea thelemanniana.[57]
References
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- ^ a b Makinson, R.O. "Grevillea juniperina subsp. amphitricha". Plantnet: New South Wales Flora Online. National Parks & Wildlife Service NSW. Archived from the original on 25 June 2014. Retrieved 23 September 2014.
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- ^ Williams, Loretto (1974). Your Australian Garden: No.4 Grevilleas. Sydney, New South Wales: David G. Stead Memorial Research Foundation of Australia. p. 14.
- ^ Apted, John (1988). "Acute contact urticaria from Grevillea juniperina". Contact Dermatitis. 18 (2): 126. doi:10.1111/j.1600-0536.1988.tb02768.x. ISSN 0105-1873. S2CID 40798925.
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- ^ "Grevillea 'Canterbury Gold'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 5 February 2013. Retrieved 1 February 2013.
- ^ "Gold Cluster™ Grevillea juniperina 'H22' PBR". Hortipedia. Archived from the original on 4 March 2016. Retrieved 27 September 2014.
- ^ "Grevillea juniperina plant named 'H22'". United States Patent and Trademark Office. Archived from the original on 16 April 2016. Retrieved 27 September 2014.
- ^ "Grevillea 'Lunar Light'". Description of Registered Cultivars. Australian Cultivar Registration Authority. Archived from the original on 20 July 2012. Retrieved 18 July 2012.
- ^ a b c Wrigley & Fagg 1991, p. 269.
- ^ "Grevillea 'Molonglo'". Description of Registered Cultivars. Australian Cultivar Registration Authority. Archived from the original on 19 July 2012. Retrieved 18 July 2012.
- ^ "Genus Species: Grevillea (G.juniperina 'Molonglo' x rhyolitica) Common / Product Name: New Blood". Bushland Flora Wholesale Nursery. Mt Evelyn, Victoria. 2014. Archived from the original on 21 June 2014. Retrieved 12 October 2014.
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- ^ "Grevillea 'Poorinda Annette'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Beauty'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Belinda'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Constance'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Jeanie'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Leane'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Pink Coral'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Queen'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
- ^ "Grevillea 'Poorinda Refrain'". List of Registered Cultivars derived from Australian native flora. Australian Cultivar Registration Authority. Archived from the original on 30 March 2015. Retrieved 26 September 2014.
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Cited text
- Wrigley, John; Fagg, Murray (1991). Banksias, Waratahs and Grevilleas. Sydney: Angus & Robertson. ISBN 0-207-17277-3.
External links
- Media related to Grevillea juniperina at Wikimedia Commons