粗糙披碱草 cu cao pi jian cao

Agropyron scabridulum Ohwi, J. Jap. Bot. 19: 166. 1943; Elymus semicostatus (Nees ex Steudel) Melderis subsp. sca-bridulus (Ohwi) ┴. Löve; Roegneria scabridula (Ohwi) Melderis.

Culms 50–60 cm tall, 2- or 3-noded, pubescent at nodes. Leaf sheath glabrous or retrorsely puberulent in innovation shoot; leaf blade involute, 7–15(–20) × ca. 0.3 cm, both surfaces ± scabrous. Spike erect, 8–10 cm; rachis compressed, margin with setiform hairs. Spikelets 1 per node, usually secund, dense, ca. 12 mm, with 5 or 6 florets. Glumes lanceolate, 3–5-veined, scabrous along veins, margin membranous, apex acuminate or pointed, usually with a tooth on one side; proximal glume 9–10 mm; distal glume 11–12 mm. Lemma lanceolate, scabrous; first lemma 7–8 mm; awn erect or slightly reflexed, purplish, slender, 12–15 mm. Palea linear-oblong, equaling lemma, setiform ciliate along keels, apex obtuse. Anthers yellow, oblong, ca. 1.5 mm. Fl. and fr. late summer.

* Forest margins, mountain slopes. Nei Mongol.