Stipeae

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Stipeae
File:Stipa gigantea 3.JPG
Stipa gigantea
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Monocots
(unranked):
Commelinids
Order:
Poales
Family:
Poaceae
Subfamily:
Pooideae
Tribe:
Stipeae

Dumort. (1824)
Genera

28 genera, see text
Synonyms[1]
  • supertribe Stipodae L. Liu (1980)
  • subtribe Stipinae Griseb. (1846)
  • Aciachninae Caro (1982)
  • Ortachninae Caro (1982)

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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 28 genera:[1]

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3

Many species were initially placed into Stipa but have now been split off into new genera. Some recent papers have analysed relationships within and between genera[4][5][6] although a complete analysis has not yet been completed. Stipoid grasses use the C3 photosynthetic pathway and live in temperate areas worldwide.[7]

Known fossils date from the late Miocene.[8]

References

  1. ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found. open access publication - free to read
  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. ↑ Barber JC, Hames KA, Cialdella AM, Giussani LM, Morrone O (2009) Phylogenetic relationships of Piptochaetium Presl (Poaceae: Stipeae) and related genera reconstructed from nuclear and chloroplast sequence datasets. Taxon 58(2), 375-380.
  5. ↑ 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.
  6. ↑ 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)
  7. ↑ 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.
  8. ↑ Thomasson JR (2005) Berriochloa gabeli and Berriochloa huletti (Gramineae: Stipeae), two new grass species from the late Miocene Ash Hollow Formation of Nebraska and Kansas. J Paleontol 79 (1):185-199

External links

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