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.

Discussion

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

Selected References

None.

Lower Taxa

None.

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 +