《中国植物志》|| 禾本科 GRAMINEAE (POACEAE) ||小麦族 Triticeae Dumort ||冰草属 Agropyron Gaertn.

11.草属属*——Agropyron Gaertn.
Gaertn. in Nov. Comm. Acad. Sci. Petrop. 14: 539. 1770.
多年生，根外常具砂套，通常不具根茎；秆仅具少数节，直立或基部常呈膝曲状。叶鞘紧密裹茎；叶舌膜质；叶片常内卷。穗状花序顶生，穗轴节间短缩，常密生毛，每节着生1枚小穗，顶生小穗常退化；小穗互相密接而呈覆瓦状，含3-11小花；颖具1-3脉（亦有具5-7脉者），两侧具宽膜质边缘，背部主脉形成明显的脊，先端具艺尖或短芒；外稃具5脉，中脉形成脊，尤以上部更为明显，先端常具芒尖或短芒，基盘明显；内稃略与外稃等长或稍长，先端常2裂；花药长为内稃之半。颖果与稃片粘合而不易脱落。
模式种：Agropyron cristatum（Linn.）Gaertn. Bromus cristatus Linn.产西伯利亚东部。
约15种，大都分布于欧亚大陆温寒带区域之高草原及沙地上；我国现知有5种、4变 种及1变型。
本属植物多为饲用价值很高的牧草，有些地区已将野生种试种栽培，对进一步开发利 用天然草场、建立人工草场有重要经济意义。

《Flora of China》|| Poaceae || ||冰草属 Agropyron

106. Agropyron Gaertner, Novi Comment. Acad. Sci. Imp. Petrop. 14: 539. 1770.

冰草属 bing cao shu

Costia Willkomm (1858), nom. illeg. superfl., not Willkomm (1860).

Plants perennial, with creeping rhizomes or culms tufted. Culms erect or geniculate at base. Sheaths of vegetative shoots often closed almost throughout their length, usually with lanceolate auricles; leaf blade flat or involute. Spike linear-oblong or ovoid; rachis tough, pubescent. Spikelets 1 per node, divergently or pectinately arranged, sessile, laterally compressed, with 3–10 florets; rachilla disarticulating above glumes and between florets. Glumes linear to narrowly ovate, hardened, 1–5-veined, 1-keeled to base, tapering to an acuminate or shortly awned tip in which veins converge. Lemma lanceolate-oblong, leathery, 5–7-veined, glabrous or pilose, apex acute or with straight awn; midvein slightly keeled; callus very short. Palea ± equaling lemma, pilose along keels, rarely smooth and glabrous, apex usually 2-toothed. Lodicules ciliate at margin. Caryopsis somewhat adherent to lemma and palea. x = 7.

About 15 species: mainly in Asia and Europe; introduced and widely cultivated in North America; five species (one endemic) in China.

The authors have seen no specimens of Agropyron kanashiroi Ohwi (J. Jap. Bot. 19: 167. 1943; Elytrigia kanashiroi (Ohwi) Melderis; Pseudo-roegneria strigosa (M. Bieberstein) A. Löve subsp. kanashiroi (Ohwi) A. Löve; Roegneria kanashiroi (Ohwi) K. L. Chang), described from "Mongholia interior" and also recorded from Ningxia (in Fl. Ningxia. 2: 359. 1988).