假鹅观草 jia e guan cao

Agropyron cognatum Hackel, Allg. Bot. Z. Syst. 11: 22. 1905; A. dschungaricum (Nevski) Nevski; A. ferganense Drobow; Elymus cognatus (Hackel) T. A. Cope; Elytrigia cognata (Hackel) O. Anders & D. Podlech; E. dschungarica Nevski; E. ferganensis (Drobow) Nevski; E. geniculata (Trinius) Nevski subsp. ferganensis (Drobow) Tzvelev.

Culms erect, 60–100 cm tall, smooth, glabrous. Leaf sheath smooth, glabrous; leaf blade glaucous green, 12–18 × (0.1–)0.2–0.7 cm, abaxial surface smooth, glabrous, adaxial surface pubescent. Spike erect, 7–19 cm; rachis smooth. Spikelets usually glaucous green, 10–18 × 3–6 mm, with (3 or)4–6 florets. Glumes 5-veined, apex acute to acuminate; proximal glume 5–10 mm; distal glume 6–12 mm. Lemma 8–11 mm, 5-veined, apex obtuse or subacute; intermediate veins connivent with midvein slightly lower than marginal veins. Palea equaling lemma, shortly ciliate along keels distally, apex subobtuse. Anthers ca. 3.5 mm. Fl. and fr. Jun–Jul. 2n = 14.

Stony slopes. Xinjiang [Kazakhstan, Kyrgyzstan, Russia, Turkmenistan, Uzbekistan].