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Ptilagrostis

Genus of grasses

Genus of grasses

  • Stipa sect. Ptilagrostis (Grisebach) Hackel.

Ptilagrostis is a genus of grasses in the family Poaceae. They are distributed in Asia and North America. They are known commonly as false needlegrasses.

Plants of this genus were originally separated from the genus Stipa, and their relationship to that genus is still unclear. Some authorities still include them in Stipa, sometimes classifying Ptilagrostis as a section of that genus. Some species are difficult to separate, being intermediate in form.

Most Ptilagrostis are variable plants. Many species have several forms and variants. Ptilagrostis species are generally tufted perennial grasses with erect stems. The spikelets are borne in an open or somewhat open panicle. Each has one flower. The awn is twisted and bent once or twice.

; Species

  • Ptilagrostis alpina - Russia (Khabarovsk, Amur Oblast, Zabaykalsky Krai)
  • Ptilagrostis concinna - Gansu, Qinghai, Shaanxi, Sichuan, Xinjiang, Tibet, Yunnan, Sikkim, Kyrgyzstan, Tajikistan, Jammu-Kashmir, Himachal Pradesh, Nepal, Bhutan, Arunachal Pradesh
  • Ptilagrostis dichotoma - Gansu, Inner Mongolia, Qinghai, Shaanxi, Sichuan, Tibet, Yunnan, Bhutan, Sikkim, Nepal, India
  • Ptilagrostis junatovii - Altai Krai, Zabaykalsky Krai, Tuva, Irkutsk Oblast, Kazakhstan, Tibet, Xinjiang, Mongolia
  • Ptilagrostis kingii - Sierra Nevada in California
  • Ptilagrostis luquensis - Gansu, Qinghai, Sichuan, Tibet
  • Ptilagrostis malyschevii - Kyrgyzstan, Tajikistan, Kazakhstan
  • Ptilagrostis milleri - Sikkim, Bhutan
  • Ptilagrostis mongholica - Gansu, Hebei, Heilongjiang, Jilin, Liaoning, Inner Mongolia, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang, Yunnan, Bhutan, Jammu-Kashmir, Mongolia, Nepal, Siberia
  • Ptilagrostis pellioti - Gansu, Inner Mongolia, Ningxia, Qinghai, Xinjiang, Mongolia
  • Ptilagrostis porteri - Rocky Mountains of Colorado + New Mexico
  • Ptilagrostis schischkinii - Xinjiang
  • Ptilagrostis yadongensis - Tibet

; formerly included see Stipa

  • Ptilagrostis tianschanica - Stipa tianschanica

References

References

  1. [https://www.biodiversitylibrary.org/page/6029147#page/473/mode/1up Grisebach, August Heinrich Rudolf. 1852. Flora Rossica; sive, Enumeratio plantarum in totius Imperii Rossici provinciis Europaeis, Asiaticis et Americanis hucusque observatarum 4(13): pages 447-448, §1084] in Latin
  2. [http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=127547 Flora of China Vol. 22 Page 204 细柄茅属 xi bing mao shu ''Ptilagrostis'' Grisebach in Ledebour, Fl. Ross. 4: 447. 1852.]
  3. [https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=500526 ''Ptilagrostis''.] Integrated Taxonomic Information System (ITIS).
  4. Hamasha, H. R., et al. (2012). [https://link.springer.com/article/10.1007/s00606-011-0549-5#page-1 ''Stipa'' (Poaceae) and allies in the Old World: molecular phylogenetics realigns genus circumscription and gives evidence on the origin of American and Australian lineages.] ''Plant Systematics and Evolution'' 298(2), 351-67.
  5. [http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?16178 ''Ptilagrostis''.] Germplasm Resources Information Network (GRIN).
  6. The genus is characterized in part by the papery, toothed [[Lemma (botany). lemmas]] of the spikelets, which have bent, plume-haired [[awn (botany)
  7. [http://apps.kew.org/wcsp/namedetail.do?name_id=438537 Kew World Checklist of Selected Plant Families]
  8. [http://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?16178 GRIN Species Records of ''Ptilagrostis''.] Germplasm Resources Information Network (GRIN).
  9. Nobis, M. and A. Nobis. (2013). [http://onlinelibrary.wiley.com/doi/10.1111/j.1756-1051.2013.00115.x/abstract ''Ptilagrostis milleri'' comb. nov. (Poaceae: Stipeae).] ''Nordic Journal of Botany'' 31(5), 623–25.
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