Stipeae

Stipeae
	Celtica gigantea
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Poaceae
Clade:	BOP clade
Subfamily:	Pooideae
Supertribe:	Stipodae
Tribe:	Stipeae; Dumort. (1824)
Genera
	28 genera, see text
Synonyms
	supertribe Stipodae L. Liu (1980); subtribe Stipinae Griseb. (1846); Aciachninae Caro (1982); Ortachninae Caro (1982);

The Stipeae are a tribe of grasses within the subfamily Pooidae, with up to 600 described species.^[2]

Description

The defining morphological features of the Stipeae include single-flowered spikelets lacking a rachilla extension, and the lemmas (the external bract) have either a sharp point or a terminal awn (long bristle).^[3]

Genera

The tribe includes 32 genera:^[1]^[4]^[5]

Achnatherum P.Beauv. (syn. Aristella)
Aciachne Benth.
Amelichloa Arriaga & Barkworth
Anemanthele Veldkamp
Austrostipa S.W.L.Jacobs & J.Everett
Barkworthia Romasch., P.M.Peterson & Soreng
Celtica F.M.Vázquez & Barkworth
Eriocoma Nutt.
× Eriosella Romasch.
Hesperostipa (Elias) Barkworth
Jarava Ruiz & Pav.
Lorenzochloa Reeder & C.Reeder
Macrochloa Kunth
Nassella (Trin.) É.Desv.
Neotrinia (Tzvelev) M.Nobis, P.D.Gudkova & A.Nowak
Oloptum Röser & Hamasha
Ortachne Nees ex Steud.
Orthoraphium Nees
Oryzopsis Michx.
Pappostipa (Speg.) Romasch., P.M.Peterson & Soreng
Patis Ohwi
Piptatheropsis Romasch., P.M.Peterson & Soreng
Piptatherum P.Beauv.
Piptochaetium J.Presl.
Psammochloa Htchc.
Pseudoeriocoma Romasch., P.M.Peterson & Soreng
Ptilagrostiella Romasch., P.M.Peterson & Soreng
Ptilagrostis Griseb.
Stipa L.
Stipellula Röser & Hamasha (syn. Stipella)
Thorneochloa Romasch., P.M.Peterson & Soreng
Timouria Roshev.
Trikerala Bor

Many species initially placed into Stipa have now been split off into new genera. Some recent papers have analysed relationships within and between the genera,^[6]^[7]^[8] but a complete analysis has not yet been performed. Stipoid grasses use the C₃ photosynthetic pathway and live in temperate areas worldwide.^[9]

Known fossils date from the late Miocene.^[10]

References

^ ^a ^b Soreng, Robert J.; Peterson, Paul M.; Romaschenko, Konstantin; Davidse, Gerrit; Teisher, Jordan K.; Clark, Lynn G.; Barberá, Patricia; Gillespie, Lynn J.; Zuloaga, Fernando O. (2017). "A worldwide phylogenetic classification of the Poaceae (Gramineae) II: An update and a comparison of two 2015 classifications". Journal of Systematics and Evolution. 55 (4): 259–290. doi:10.1111/jse.12262. hdl:10261/240149. ISSN 1674-4918.
^ Barkworth ME, Arriaga MO, Smith JF, Jacobs SWL, Valdes-Reyna J, Bushman BS (2008) Molecules and Morphology in South American Stipeae (Poaceae). Systematic Botany 33(4), 719-731.
^ Cialdella AM, Giussani LM, Aagesen L, Zuloaga FO, Morrone O (2007) A phylogeny of Piptochaetium (Poaceae : Pooideae : Stipeae) and related genera based on a combined analysis including trnL-F, rp116, and morphology. Systematic Botany 32(3), 545-559.
^ Peterson PM, Romaschenko K, Soreng RJ, Valdés Reyna J (2019) A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, × Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa. PhytoKeys 126: 89-125. https://doi.org/10.3897/phytokeys.126.34096
^ "Poaceae Barnhart". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 27 October 2024.
^ Barber, Janet C.; Hames, Kasey A.; Cialdella, Ana Maria; Giussani, Liliana M.; Morrone, Osvaldo (2009). "Phylogenetic relationships of Piptochaetium Presl (Poaceae: Stipeae) and related genera reconstructed from nuclear and chloroplast sequence datasets". Taxon. 58 (2): 375–380. doi:10.1002/tax.582005. ISSN 0040-0262. pdf
^ Jacobs SWL, Bayer R, Everett J, Arriaga MO, Barkworth ME, Sabin-Badereau A, Torres MA, Vazquez FM, Bagnall N (2007) Systematics of the tribe Stipeae (Gramineae) using molecular data. Aliso 23, 349-361.
^ Jacobs SWL, Everett J, Barkworth ME, Hsiao C (2000) Relationships within the Stipoid grasses (Gramineae). In 'Grass Systematics and Evolution.' (Eds SWL Jacobs and J Everett) pp. 75-82. (CSIRO: Melbourne)
^ Romaschenko K, Peterson PM, Soreng RJ, Garcia-Jacas N, Futorna O, Susanna A (2008). "Molecular phylogenetic analysis of the American Stipeae (Poaceae) resolves Jarava sensu lato polyphyletic: evidence for a new genus, Pappostipa". Journal of the Botanical Research Institute of Texas. 2 (1): 165–192. JSTOR 41971613.{{cite journal}}: CS1 maint: multiple names: authors list (link) pdf
^ Thomasson, Joseph R. (2005). "Berriochloa Gabeli and Berrichloa Huletti (Graminae: Stipeae), two new grass species from the late miocene Ash Hollow Formationof Nebraska and Kansas". Journal of Paleontology. 79 (1): 185–199. Bibcode:2005JPal...79..185T. doi:10.1666/0022-3360(2005)079<0185:BGABHG>2.0.CO;2. ISSN 0022-3360. pdf

External links

Stipa L. sensu lato (sensu lato refers to the tribe) The grass genera of the world website by L. Watson, T.D. Macfarlane, and M.J. Dallwitz

Media related to Stipeae at Wikimedia Commons
Data related to Stipeae at Wikispecies

[SorengPeterson2017-1] Soreng, Robert J.; Peterson, Paul M.; Romaschenko, Konstantin; Davidse, Gerrit; Teisher, Jordan K.; Clark, Lynn G.; Barberá, Patricia; Gillespie, Lynn J.; Zuloaga, Fernando O. (2017). "A worldwide phylogenetic classification of the Poaceae (Gramineae) II: An update and a comparison of two 2015 classifications". Journal of Systematics and Evolution. 55 (4): 259–290. doi:10.1111/jse.12262. hdl:10261/240149. ISSN 1674-4918.

[2] Barkworth ME, Arriaga MO, Smith JF, Jacobs SWL, Valdes-Reyna J, Bushman BS (2008) Molecules and Morphology in South American Stipeae (Poaceae). Systematic Botany 33(4), 719-731.

[3] Cialdella AM, Giussani LM, Aagesen L, Zuloaga FO, Morrone O (2007) A phylogeny of Piptochaetium (Poaceae : Pooideae : Stipeae) and related genera based on a combined analysis including trnL-F, rp116, and morphology. Systematic Botany 32(3), 545-559.

[4] Peterson PM, Romaschenko K, Soreng RJ, Valdés Reyna J (2019) A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of Eriocoma, Neotrinia, Oloptum, and five new genera: Barkworthia, × Eriosella, Pseudoeriocoma, Ptilagrostiella, and Thorneochloa. PhytoKeys 126: 89-125. https://doi.org/10.3897/phytokeys.126.34096

[powo-5] "Poaceae Barnhart". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 27 October 2024.

[6] Barber, Janet C.; Hames, Kasey A.; Cialdella, Ana Maria; Giussani, Liliana M.; Morrone, Osvaldo (2009). "Phylogenetic relationships of Piptochaetium Presl (Poaceae: Stipeae) and related genera reconstructed from nuclear and chloroplast sequence datasets". Taxon. 58 (2): 375–380. doi:10.1002/tax.582005. ISSN 0040-0262. pdf

[7] Jacobs SWL, Bayer R, Everett J, Arriaga MO, Barkworth ME, Sabin-Badereau A, Torres MA, Vazquez FM, Bagnall N (2007) Systematics of the tribe Stipeae (Gramineae) using molecular data. Aliso 23, 349-361.

[8] Jacobs SWL, Everett J, Barkworth ME, Hsiao C (2000) Relationships within the Stipoid grasses (Gramineae). In 'Grass Systematics and Evolution.' (Eds SWL Jacobs and J Everett) pp. 75-82. (CSIRO: Melbourne)

[9] Romaschenko K, Peterson PM, Soreng RJ, Garcia-Jacas N, Futorna O, Susanna A (2008). "Molecular phylogenetic analysis of the American Stipeae (Poaceae) resolves Jarava sensu lato polyphyletic: evidence for a new genus, Pappostipa". Journal of the Botanical Research Institute of Texas. 2 (1): 165–192. JSTOR 41971613.{{cite journal}}: CS1 maint: multiple names: authors list (link) pdf

[10] Thomasson, Joseph R. (2005). "Berriochloa Gabeli and Berrichloa Huletti (Graminae: Stipeae), two new grass species from the late miocene Ash Hollow Formationof Nebraska and Kansas". Journal of Paleontology. 79 (1): 185–199. Bibcode:2005JPal...79..185T. doi:10.1666/0022-3360(2005)079<0185:BGABHG>2.0.CO;2. ISSN 0022-3360. pdf

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