18. Elymus zhui S. L. Chen, Fl. China. 22: 410. 2006.
小株披碱草 xiao zhu pi jian cao
Replaced synonym: Roegneria minor Keng, Acta Univ. Nankin. Sci. Nat. 1963(1): 71. 1963, not Elymus minor (J. G. Smith) M. E. Jones, Contr. W. Bot. 14: 20. 1912.
Culms erect or slightly procumbent at base, 25–30 cm tall, ca. 4-noded. Leaf sheath glabrous, or pubescent at base; ligule ca. 0.5 mm or obsolete; leaf blade green, involute or flat, 8–10(–15) × 0.2–0.4 cm, abaxial surface pilose, adaxial surface densely pilose. Spike erect, 8–9 cm. Spikelets 1 per node, green, with (2 or)3–5 florets. Glumes oblong-lanceolate, proximal one 5–7 mm, distal one 6–8 mm, 5- or 6-veined, scabrous along veins, apex acute, sometimes with a tooth just below apex. Lemma lanceolate, puberulent throughout; first lemma ca. 8.5 mm; awn reflexed, ca. 1.2 cm. Palea subequaling lemma, rigidly ciliolate along keels, puberulent between keels distally, apex subrounded. Fl. and fr. Jul–Aug.
* Mountain slopes; ca. 1600 m. Guizhou, Hebei, Nei Mongol, Ningxia, Qinghai, Shanxi.
The epithet of this nomen novum honors the late Dr. Guanghua Zhu, co-author of the present account of Triticeae.
Löve (Feddes Repert. 95: 458. 1984) did not validly publish the combination "Elymus minor," which would have been a later homonym; see the note following the genus description above.