别名：bearded wheatgrass;

科名：禾本科 Gramineae

属名：鹅观草属 Roegneria

《中国植物志》第9(3)卷060页
  3.犬草（禾本科图说）
  Ruegneria caning (Linn.) Nevski in Kom. Fl. URSS 2: 617. 1934; Roshev. in Fl. Kirg. 2: 195. 1950; 禾本科图说351. 1959. ——Triticum caninum Linn. Sp. Pl. 86. 1753.
  多年生，疏丛，秆高75-150厘米，平滑无毛。叶片扁平而薄，宽线形，宽0.5-1.1厘米，绿色或灰绿色，粗糙，无毛，或上面散生柔毛。穗状花序较密集，俯垂，绿色或稀为紫绿色，长10-20厘米；小穗含2-5小花，长1-1.5厘米（芒除外）；颖披针形，先端骤狭，通常具短芒，3-5脉，脉间宽，粗糙，边缘干膜质，第一颖长0.6-1厘米，具长约2毫米的短芒，第二颖长0.7-1.1厘米，具芒长2-4毫米；外稃光滑，长0.9-1.1厘米，芒弯曲，长 1.5-1.8厘米；花药长2.5-2.8毫米。
  产新疆。生于海拔1300-2000米山地。苏联中亚、西伯利亚、高加索，伊朗、欧洲也有分布。模式标本采自欧洲。

《Flora of China》 Vol. 22 (2006)
Elymus caninus  (Linnaeus) Linnaeus
犬草   quan cao
Triticum caninum Linnaeus, Sp. Pl. 1: 86. 1753; Agr-opyron caninum (Linnaeus) P. Beauvois; Braconotia canina (Linnaeus) Fourreau; B. elymoides Godron, nom. illeg. superfl.; Elytrigia canina (Linnaeus) Drobow; Goulardia canina (Linnaeus) Husnot; Roegneria canina (Linnaeus) Nevski; Zeia canina (Linnaeus) Lunell.
Culms laxly tufted, 80–150 cm tall, smooth. Leaf sheath glabrous; leaf blade green or glaucous green, broadly linear, flat, 12–20 × 0.5–1.1 cm, thin, glabrous or adaxial surface scabrous to scattered pilose. Spike nodding, somewhat dense, 10–20 cm. Spikelets 1 per node, green, rarely greenish purple, 10–15 mm excluding awns, with 2–5 florets. Glumes lanceolate, abruptly narrowed distally, 3–5-veined with broad secondary veins, scabrous, margin scarious; proximal glume 0.6–1 cm, awn ca. 2 mm; distal glume 0.7–1.1 cm, awn 2–4 mm. Lemma smooth, 0.9–1.1 cm; awn divergent, 1.5–1.8 cm. Palea apex truncate. Anthers 2.5–2.8 cm. Fl. and fr. Jun–Aug. 2n = 28.
Forests, forest glades, scrub, mountain slopes; 1300–2000 m. Xinjiang [Kazakhstan, Kyrgyzstan, Russia, Turkmenistan, Uzbekistan; SW Asia, Europe].