Poa arctica
| Poa arctica | |
|---|---|
| File:Poa arctica - panicle view (Matt Lavin).jpg | |
| Panicle | |
| File:Poa arctica (Manual of the grasses of the United States).jpg | |
| Botanical illustratiom | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Subfamily: | Pooideae |
| Genus: | Poa |
| Species: | P. arctica
|
| Binomial name | |
| Poa arctica | |
| Subspecies[1] | |
| |
| Synonyms | |
| |
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Poa arctica, the Arctic bluegrass or Arctic meadow grass, is a species of flowering plant in the family Poaceae, with a subarctic circumpolar distribution, extending into the Rockies.[2][3] Often a dominant species in the tundra, it responds positively to disturbance.[4]
Description
[edit | edit source]Poa arctica is a perennial grass that spreads by rhizomes and often shows purplish coloration. Stems are 7–60 cm tall. Leaves are narrow, smooth, and hairless, with ligules 2–7 mm long. The flowering panicles are 3.5–15 cm long, open and sparse, bearing 10–40 spikelets. Spikelets are 4.5–8 mm long, laterally compressed, and contain 2–6 florets. Glumes are lanceolate, sometimes keeled, and usually smooth, with moderately pronounced veins.[5]
Taxonomy
[edit | edit source]Poa arctica R.Br., described in 1823 from Melville Island, Canada. [6] It is the basionym of Poa cenisia subsp. arctica (R.Br.) K.Richt., published in Plantae Europaeae 1: 83 (1890).[7]
References
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- Poa
- Flora of Norway
- Flora of Svalbard
- Flora of Sweden
- Flora of Finland
- Flora of North European Russia
- Flora of East European Russia
- Flora of Siberia
- Flora of the Russian Far East
- Flora of Subarctic America
- Flora of Western Canada
- Flora of Eastern Canada
- Flora of the Northwestern United States
- Flora of Nevada
- Flora of Utah
- Flora of New Mexico
- Plants described in 1823