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FOC | Family List | FOC Vol. 22 | Poaceae | Elymus

46. Elymus tschimganicus (Drobow) Tzvelev, Rast. Tsentr. Azii. 4: 221. 1968 [“czimganicus”].

云山披碱草 yun shan pi jian cao

Culms erect, usually geniculate at base, 25–60 cm tall, smooth, glabrous. Leaf sheath glabrous throughout, or pubescent proximally; leaf blade glaucous green, subinvolute, 0.15–0.3 cm wide, both surfaces glabrous or adaxial surface slightly hairy. Spike flexuose, slender, 7–9 cm. Spikelets 1 per node, pale glaucous green, rarely very slightly tinged purple, with 5–7 florets. Glumes linear-lanceolate, 4–8 mm, 1/4–1/2 as long as basal florets in spikelet, (3–)5-veined, scabrous along veins, apex usually acuminate, occasionally shortly awned. Lemma lanceolate, 9–10 mm, scabrous; callus shortly setose on sides, or smooth and glabrous; awn reflexed, 20–30 mm. Palea subequaling lemma, apex slightly emarginate or obtuse. Anthers 2–2.5 mm. Fl. and fr. Jun–Jul.

Mountain slopes, high mountain meadows; ca. 3500 m. Qinghai, Xinjiang [Kazakhstan, Kyrgyzstan, Russia, Turkmenistan, Uzbekistan].

See the comment under Elymus brevipes (species no. 42).

1 Lemma callus shortly setose on sides; leaf sheath glabrous, or pubescent proximally.   46a var. tschimganicus
+ Lemma callus smooth, glabrous; leaf sheath glabrous throughout.   46b var. glabrispiculus


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