别名：Altai wildrye;胡特尼－德里斯;那林-黑雅嘎;

科名：禾本科 Gramineae

属名：赖草属 Leymus

《中国植物志》第9(3)卷020页
  7.窄颖赖草（禾本科图说）
  Leymus angustus (Trin.) Pilger in Engl. Bot. Jahrb. 74: 6. 1947. ——Elymus angustus Trin. in Ledeb. Fl. Alt. 1: 119 1829. ——Aneurolepidium angustum (Trin. ) Nevski in Kom. Fl. URSS 2: 700. 1934; 禾本科图说434. 图367. 1959.
  多年生，具下伸的根茎；须根粗壮，径1-2毫米。秆单生或丛生，基部残存褐色纤维状叶鞘，高60-100厘米，具3-4节，无毛或在节下以及花序下部常被短柔毛。叶鞘平滑或稍微粗糙，灰绿色，常短于节间；叶舌短，干膜质，先端钝圆，长0.5-1毫米；叶片质地较厚而硬，长15-25厘米，宽5-7毫米，粉绿色，粗糙或其背面近于平滑，大部内卷，先端呈锥状，穗状花序直立，长15-20厘米，宽7-10毫米；穗轴被短柔毛，节间长5-10毫米，基部者长达15毫米；小穗2枚生于1节，很少3枚，长10-14毫米，含2-3小花；小穗轴节间长2-3毫米，被短柔毛；颖线状披针形，下部较宽广，覆盖第一外稃的基部，向上逐渐狭窄成芒，中上部分粗糙，下部偶有短柔毛，具I粗壮的脉，长10-13毫米，第一颖短于第二颖或近于等长；外稃披针形，密被柔毛，具不明显的5-7脉，顶端渐尖或延伸成长约1毫米的芒，第一外稃长10-14毫米（连芒），基盘被短毛；内稃常稍短于外稃，脊的上部有纤毛；花药长2.5-3毫米。花、果期6-8月。
  产我国西北各省。生于平原及半荒漠盐渍化的草地上。苏联中亚细亚、西伯利亚及欧洲也有分布。模式标本采自阿勒泰。

《Flora of China》 Vol. 22 (2006)
Leymus angustus  (Trinius) Pilger
窄颖赖草   zhai ying lai cao
Elymus angustus Trinius in Ledebour, Fl. Altaic. 1: 119. 1829; Aneurolepidium angustum (Trinius) Nevski; Leymus angustus subsp. macroantherus D. F. Cui; Triticum angustum (Trinius) F. Hermann.
Culms solitary or tufted, 60–100 cm tall, 3- or 4-noded, glabrous, or pubescent below nodes and spike. Leaf sheath grayish green, usually shorter than internodes, smooth or slightly scabrous; ligule 0.5–1 mm, membranous, apex obtuse; leaf blade glaucous, rolled, 15–25 × 0.5–0.7 cm, stiff, abaxial surfacesubsmooth, adaxial surface smooth, apex acute. Spike erect, 15–20 × 0.7–1 cm; rachis pubescent. Spikelets 2(or 3) per node, 1–1.4 cm, with 2 or 3 florets; rachilla puberulent. Glumes covering base of first lemma, subequal or proximal glume slightly shorter, 10–13 mm, linear-lanceolate, 1-veined. Lemma lanceolate, obscurely 5–7-veined, densely puberulent, apex mucronate or acuminate; first lemma 10–14 mm including awn; callus pubescent. Palea slightly shorter than lemma, ciliate along keels. Anthers 2.5–3 mm. Fl. and fr. Jun–Aug.
Grassy places, meadows; 2000–2100 m. Gansu, Nei Mongol, Ningxia, Qinghai, Xinjiang [Kazakhstan, Kyrgyzstan, Mongolia, Russia, Turkmenistan, Uzbekistan; SW Asia, Europe].
This species is used for forage.