小黑麦 xiao hei mai

Secale fragile M. Bieberstein.

Culms densely tufted, rarely solitary, erect but usually geniculate at base, ca. 40 cm tall, glabrous but pilose below spike. Leaf blade flat or involute, 5–10 × 0.2–0.3 cm, both surfaces glabrous or adaxial surface pubescent. Spike erect, 3–8 × 0.8–1 cm excluding awns; rachis fragile, margin ciliate; inter-nodes 3–4 mm. Spikelets with 2 or 3 florets. Glumes linear-subulate, 7–9 mm; awn ca. 20 mm. Lemma spinose-ciliate along keels. Caryopsis black-brown, ca. 5 mm, apex white hairy. Fl. and fr. Jun–Aug. 2n = 14.

Cultivated in N China [native to Kazakhstan, Kyrgyzstan, Russia, Turkmenistan, Uzbekistan; SW Asia, Europe].