Poa arctica

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Poa arctica
Poa arctica - panicle view (Matt Lavin).jpg
Panicle
Poa arctica (Manual of the grasses of the United States).jpg
Botanical illustratiom
Scientific classification OOjs UI icon edit-ltr.svg
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]
  • Poa arctica subsp. arctica
  • Poa arctica subsp. depauperata(Fr.) Nannf.
Synonyms
  • Poa cenisia subsp. arctica(R.Br.) K.Richt.

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]

Contents

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

  1. ↑ POWO (2025).
  2. ↑ "Poa arctica R.Br". Plants of the World Online. Board of Trustees of the Royal Botanic Gardens, Kew. Retrieved 5 July 2021.
  3. ↑ Registry-Migration.Gbif.Org (2021). "Poa arctica R.Br". GBIF Backbone Taxonomy. Checklist dataset. GBIF Secretariat. doi:10.15468/39omei . Retrieved 5 July 2021.
  4. ↑ 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.
  5. ↑ 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)
  6. ↑ 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.
  7. ↑ 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.
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