加拿大雀麦 jia na da que mai

Bromopsis canadensis (Michaux) Holub; Bromus cana-densis Michaux; B. yezoensis Ohwi; Zerna yezoensis (Ohwi) Sugimoto.

Perennial, with short rhizomes. Culms 70–120 cm tall, pubescent with reflexed hairs, 6-noded. Leaf sheaths pubescent; leaf blades 2–3 cm × 6–10 mm, glabrous or sparsely pilose on adaxial surface; ligule ca. 1 mm. Panicle broadly ovoid, nodding, 15–25 cm; branches 2 or 3 per node, curved, each bearing 1–3 spikelets. Spikelets 15–20 mm, green with membranous yellowish brown apex, florets 6 or 7; rachilla 1–2 cm, sparsely pubescent; glumes scabrid on keel, lower glume 6–7 mm, 1-veined, upper glume narrow, 8–9 mm, 3-veined; lemmas 10–12 mm, 5–7-veined, pilose near margins in lower half and along lower 1/3 of midrib, back glabrous, apex obtuse or bilobed, awned from between teeth; awn 2–6 mm, erect; palea 8–9 mm, keels ciliate. Anthers 1–1.5 mm. Fl. and fr. Jul–Sep. 2n = 14.

Mid-elevation mountains, low-elevation wet forested places, meadows. Nei Mongol [Japan, Mongolia, Russia (Far East); North America].