赖草(原变种) lai cao (yuan bian zhong)

Triticum secalinum Georgi, Bemerk. Reise Russ. Reich. 1: 198. 1775; Agropyron chinorossicum Ohwi; Aneurolepidium dasystachys (Trinius) Nevski; A. secalinum (Georgi) Kitagawa; Elymus dasystachys Trinius; E. dasystachys var. ligulatus Keng; E. secalinus (Georgi) Bobrov; E. thomsonii J. D. Hooker; Leymus dasystachys (Trinius) Pilger; L. ligulatus (Keng) Tzvelev; L. secalinus var. laxinodis L. B. Cai.

Culms 40–100 cm tall, 3–5-noded. Leaf blade abaxial surface scabrous or smooth, adaxial surface scabrous or pubescent. Spikelets 2 or 3(or 4) per node, with 4–7(–10) florets. Glumes linear-lanceolate. Anthers 3.5–4 mm. Fl. and fr. Jun–Oct. 2n = 28.

Grassy places, mountain slopes. Gansu, Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi, Sichuan, Xinjiang [India, Japan, Korea, Kazakhstan, Kyrgyzstan, Mongolia, Russia, Turkmenistan, Uzbekistan].

The new combination Leymus laxinodis L. B. Cai & X. Su (Bull. Bot. Res., Harbin 27(6): 654. 2007) appeared after publication of the family treatment for the Flora of China.