Arctagrostis latifolia subsp. latifolia

Common names: Polargrass Arctagrostis à larges feuilles
Treatment appears in FNA Volume 24. Treatment on page 678.

Culms (10)15-50(95) cm; uppermost nodes usually in the lowest 1/3 of the culm. Uppermost sheaths usually longer than the blades; blades 1-16 cm long, 1.5-9 mm wide. Panicles 2.5-10(17) cm long, 0.7-3 cm wide; longest branches 0.5-4(6.5) cm, with 3-15(40) spikelets per branch; secondary branches usually appressed, spreading in warmer habitats. Spikelets (3)4-6.5 mm. Glumes subequal; lower glumes 1.8-4.5 mm, 1(3)-veined; upper glumes 2.3-5.5 mm, usually about 1 mm shorter than the lemmas, (1)3-veined; lemmas 3-6.5 mm; anthers 1.8-4 mm. 2n = 56.


Arctagrostis latifolia subsp. latifolia is the common subspecies from the arctic coast of Alaska to Nunavut, northern Quebec, and northern Greenland.

Selected References


Lower Taxa


Susan G. Aiken +
(R. Br.) Griseb. +
Polargrass +  and Arctagrostis à larges feuilles +
Alta. +, B.C. +, Greenland +, Nfld. and Labr. (Nfld.) +, Man. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +  and Alaska +
Gramineae +
Arctagrostis latifolia subsp. latifolia +
Arctagrostis latifolia +
subspecies +