Comments
provided by eFloras
This is a variable species of hybrid origin, close to Poa lapponica, that might represent a complex of independently arisen populations. The diagnostic characters, such as the pubescence of the lemma and rachilla, and the length of the ligule, vary greatly, both within populations and between populations. Some variants have been recognized as species but are here treated as varieties.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Culms loosely tufted, 35–60 cm tall, obliquely ascending, nodes 3–5, uppermost 1/3–1/2 way up culm. Shoots extravaginal. Leaf sheaths scabrid, rarely almost glabrous, shorter than internode; blade usually shorter than sheath, flat, or folded, (1–)1.5–2 mm wide, both surfaces scabrid; ligule 0.2–1.5(–2) mm. Panicle effuse, 6–10 × 2.5–5 cm, branches spreading, 2–5 per node, basal primary branch 1/3–1/2 as long as panicle with spikelets in distal 1/2. Spikelets ovate-lanceolate, (3–)3.5–4(–5) mm, florets 2–4; rachilla glabrous or warty, rarely ciliata or pilosa; glumes narrowly lanceolate, lower glume 3–4 mm, upper glume 3.5–4.5 mm; lemma lanceolate, 3–4(–4.5) mm, keel shortly villous for 1/2 of length, marginal veins to 1/3, apex membranous; callus webbed to glabrous; palea smooth and glabrous between keels. Anthers ca. 1.2 mm. Fl. Jun–Aug.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
provided by eFloras
Gansu, Hebei, Heilongjiang, Liaoning, Nei Mongol, Shandong, Xinjiang, Xizang [Kazakhstan, Korea, Mongolia, Russia; Europe].
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- cc-by-nc-sa-3.0
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
provided by eFloras
Open grassy and rocky slopes, thickets; (300–)1000–3200(–4200) m.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA