Poa arctica
| Poa arctica | |
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| Panicle | |
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| 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
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| Binomial name | |
| Poa arctica | |
| Subspecies[1] | |
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| 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
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
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
- ^ POWO (2025).
- ^ "Poa arctica R.Br". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 5 July 2021.
- ^ Registry-Migration.Gbif.Org (2021). "Poa arctica R.Br". GBIF Backbone Taxonomy. Checklist dataset. GBIF Secretariat. doi:10.15468/39omei. Retrieved 5 July 2021.
- ^ Hollister, Robert D.; May, Jeremy L.; Kremers, Kelseyann S.; Tweedie, Craig E.; Oberbauer, Steven F.; Liebig, Jennifer A.; Botting, Timothy F.; Barrett, Robert T.; Gregory, Jessica L. (2015). "Warming experiments elucidate the drivers of observed directional changes in tundra vegetation". Ecology and Evolution. 5 (9): 1881–1895. Bibcode:2015EcoEv...5.1881H. doi:10.1002/ece3.1499. PMC 4485969. PMID 26140204.
- ^ Barkworth, M.E.; Capels, K.M.; Long, S.; Anderton, L.K.; Piep, M.B., ed. (2007). Flora of North America North of Mexico, Vol. 24: Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Oxford University Press. ISBN 9780195310719.
{{cite book}}: CS1 maint: multiple names: editors list (link) - ^ Brown, Robert (1823). Chloris Melvilliana: a list of plants collected in Melville Island, latitude 74–75° N, longitude 110–112° W, in the year 1820; by the officers of the voyage of discovery under the orders of Captain Parry. London: W. Clowes. Retrieved 4 December 2025.
- ^ Richter, Karl; Gürke, M. (1890). Plantae Europaeae. Enumeratio systematica et synonymica plantarum phaenerogamicarum in Europa sponte crescentium vel mere inquilinarum. Vol. 1. W.Engelmann. p. 83.