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Life » » Plants » » True grasses »

Poa glauca Vahl

Brief Summary

    Poa glauca: Brief Summary
    provided by wikipedia

    Poa glauca is a species of grass known by the common names glaucous bluegrass, glaucous meadow-grass and white bluegrass. It has a circumboreal distribution, occurring throughout the northern regions of the Northern Hemisphere. It is also known from Patagonia. It is a common grass, occurring in Arctic and alpine climates and other areas. It can be found throughout the Canadian Arctic Archipelago in many types of habitat, including disturbed and barren areas.

    This is a perennial bunchgrass growing small, dense clumps of waxy leaves and stems up to about 80 centimeters in maximum height, but often remaining dwarfed, no more than 10 centimeters tall. The inflorescence is variable in appearance, growing into a short or long arrangement of thin branches bearing spikelets.

    灰早熟禾: Brief Summary ( Chinese )
    provided by wikipedia 中文维基百科

    灰早熟禾(学名:Poa glauca)为禾本科早熟禾属下的一个种。

Comprehensive Description

Distribution

    Distribution
    provided by eFloras
    Gansu, Nei Mongol, Qinghai, Shaanxi, Sichuan, Taiwan, Xinjiang, Xizang, Yunnan [India, Japan, Kazakhstan, Korea, Kyrgyzstan, Mongolia, Nepal, Pakistan, Russia, Tajikistan, Uzbekistan; SW Asia (Iran), Europe, North America].
    Distribution ( Spanish; Castilian )
    provided by IABIN
    Chile Central

Morphology

    Comments
    provided by eFloras
    Poa glauca is probably one of the most polymorphic species in the genus. In C Asia it has probably been almost consumed by introgressive hybridization. Most gatherings seem to belong to the hybrid complexes P. albertii and P. araratica s.l. Pure populations of P. glauca are rather rare in China.
    Description
    provided by eFloras
    Culms erect, glaucous, sometimes strongly purplish, (5–) 10–15(–35) cm tall, nodes 1 or 2, uppermost to 1/5 way up culm, covered by sheath; uppermost internode up to 1.5–2 mm wide. Shoots always extravaginal, even when densely tufted. Leaf sheath longer than blade, flat or folded, sometimes quite soft, withering, 1–2 mm wide, margins and both sides of veins scabrid; ligule 1–1.5(–2) mm. Panicle contracted, later quite open, 4–7 cm; branches 1 or 2 per node, 2–3 cm, with a few scattered spikelets. Spikelets oblong-ovate, (3.8–)4–5(–7) mm, tinged with purple, florets 2–4; glumes narrowly lanceolate, unequal, as long as lower lemma; lemma narrowly lanceolate, lower lemma ca. 4 mm, keel shortly villous for 1/2 of length, marginal veins for 1/3; callus sparsely webbed or glabrous. Fl. Jun–Aug.
    Physical Description
    provided by USDA PLANTS text
    .

Habitat

    Habitat
    provided by eFloras
    Dry gravel slopes, grassy places on river beaches; 2000–5200 m.