宽穗赖草Leymus ovatus (Trin.) Tzvel.
宽穗赖草Leymus ovatus (Trin.) Tzvel.
6.宽穗赖草（拟）图版5: 1-6
Leymus ovatus(Trin.) Tzvel. Not. Syst. Inst. Bot. Kom. Acad. Sci. URSS 20: 430. 1960. ——Elymus ovatus Trin. in Ledeb. Fl. Alt. 1: 121. 1829. ——Aneurolepidium ovatum (Trin.) Nevski in Kom. Fl. URSS 2: 707. 1934.
多年生，具下伸根茎。秆单生，基部具枯褐色纤维状叶鞘，高70-100厘米，具3-4节，光滑无毛或于花序下密被贴生细毛。叶鞘光滑无毛；叶舌膜质，截平，长约1毫米，被细毛；叶片长5-15厘米，宽5-8毫米，扁平或内卷，上面密被白色长柔毛，下面密被短毛。穗状花序直立，密集成椭圆形或长椭圆形，长5-9厘米，宽1.5-2.5厘米；穗轴密被柔毛，节间长2-6毫米，基部者长达10毫米；小穗4枚生于1节，长10-20毫米，无柄或具长约1毫米的短柄，含5-7小花；小穗轴节间长约1毫米，贴生短柔毛；颖线状披针形，先端狭窄如芒，下部具窄膜质边，常具不明显的3脉，脊部粗糙，两颖近等长，长10-13毫米，覆盖或不正覆盖第一外稃的基部；外稃披针形，先端渐尖或具长1-3毫米的芒，背面明显5-7脉，上部被稀疏而贴生的短刺毛，边缘具纤毛，基盘具长约1毫米的硬毛，第一外稃长8-10毫米；内稃与外稃等长或稍短，脊的上半部具纤毛；花药长3.5-4毫米。花、果期7-8月。
产新疆东北部。生于平原路边、沟渠旁。苏联西伯利亚也有分布。模式标本采自阿勒泰。
《Flora of China》 Vol. 22 (2006)
Leymus ovatus (Trinius) Tzvelev
宽穗赖草 kuan sui lai cao
Elymus ovatus Trinius in Ledebour, Fl. Altaic. 1: 121. 1829; Aneurolepidium ovatum (Trinius) Nevski; Leymus se-calinus (Georgi) Tzvelev subsp. ovatus (Trinius) Tzvelev.
Culms usually solitary, 70–100 cm tall, 3- or 4-noded, smooth, glabrous, but densely puberulent below spike. Leaf sheath smooth, glabrous; ligule ca. 1 mm, membranous, puberulent, apex truncate; leaf blade flat or rolled, 5–15 × 0.5–0.8 cm, abaxial surface densely pubescent, adaxial surface densely villous. Spike erect, oblong-ovate, 5–9 × 1.5–2.5 cm; rachis densely pubescent, internodes 2–6(–10) mm. Spikelets 4 per node, sessile or very shortly pedicellate, 1–2 cm, with 5–7 florets. Glumes linear-lanceolate, subequal, 10–13 mm, obscurely 3-veined, apex mucronate to acuminate. Lemma lanceolate, obscurely 5–7-veined, abaxially hirsutulous, margin ciliate, apex acuminate or with awn 1–3 mm; first lemma 8–10 mm; callus hirsute. Palea slightly shorter than or equaling lemma. Anthers 3.5–4 mm. Fl. and fr. Jul–Aug.
Grassy places, river banks, roadsides. Nei Mongol, Qinghai, Xinjiang [Afghanistan, Kazakhstan, Kyrgyzstan, Russia, Turkmenistan, Uzbekistan].
别名：乌日根-黑雅嘎;
科名：禾本科 Gramineae
属名：赖草属 Leymus
6.宽穗赖草（拟）图版5: 1-6
Leymus ovatus(Trin.) Tzvel. Not. Syst. Inst. Bot. Kom. Acad. Sci. URSS 20: 430. 1960. ——Elymus ovatus Trin. in Ledeb. Fl. Alt. 1: 121. 1829. ——Aneurolepidium ovatum (Trin.) Nevski in Kom. Fl. URSS 2: 707. 1934.
多年生，具下伸根茎。秆单生，基部具枯褐色纤维状叶鞘，高70-100厘米，具3-4节，光滑无毛或于花序下密被贴生细毛。叶鞘光滑无毛；叶舌膜质，截平，长约1毫米，被细毛；叶片长5-15厘米，宽5-8毫米，扁平或内卷，上面密被白色长柔毛，下面密被短毛。穗状花序直立，密集成椭圆形或长椭圆形，长5-9厘米，宽1.5-2.5厘米；穗轴密被柔毛，节间长2-6毫米，基部者长达10毫米；小穗4枚生于1节，长10-20毫米，无柄或具长约1毫米的短柄，含5-7小花；小穗轴节间长约1毫米，贴生短柔毛；颖线状披针形，先端狭窄如芒，下部具窄膜质边，常具不明显的3脉，脊部粗糙，两颖近等长，长10-13毫米，覆盖或不正覆盖第一外稃的基部；外稃披针形，先端渐尖或具长1-3毫米的芒，背面明显5-7脉，上部被稀疏而贴生的短刺毛，边缘具纤毛，基盘具长约1毫米的硬毛，第一外稃长8-10毫米；内稃与外稃等长或稍短，脊的上半部具纤毛；花药长3.5-4毫米。花、果期7-8月。
产新疆东北部。生于平原路边、沟渠旁。苏联西伯利亚也有分布。模式标本采自阿勒泰。
《Flora of China》 Vol. 22 (2006)
Leymus ovatus (Trinius) Tzvelev
宽穗赖草 kuan sui lai cao
Elymus ovatus Trinius in Ledebour, Fl. Altaic. 1: 121. 1829; Aneurolepidium ovatum (Trinius) Nevski; Leymus se-calinus (Georgi) Tzvelev subsp. ovatus (Trinius) Tzvelev.
Culms usually solitary, 70–100 cm tall, 3- or 4-noded, smooth, glabrous, but densely puberulent below spike. Leaf sheath smooth, glabrous; ligule ca. 1 mm, membranous, puberulent, apex truncate; leaf blade flat or rolled, 5–15 × 0.5–0.8 cm, abaxial surface densely pubescent, adaxial surface densely villous. Spike erect, oblong-ovate, 5–9 × 1.5–2.5 cm; rachis densely pubescent, internodes 2–6(–10) mm. Spikelets 4 per node, sessile or very shortly pedicellate, 1–2 cm, with 5–7 florets. Glumes linear-lanceolate, subequal, 10–13 mm, obscurely 3-veined, apex mucronate to acuminate. Lemma lanceolate, obscurely 5–7-veined, abaxially hirsutulous, margin ciliate, apex acuminate or with awn 1–3 mm; first lemma 8–10 mm; callus hirsute. Palea slightly shorter than or equaling lemma. Anthers 3.5–4 mm. Fl. and fr. Jul–Aug.
Grassy places, river banks, roadsides. Nei Mongol, Qinghai, Xinjiang [Afghanistan, Kazakhstan, Kyrgyzstan, Russia, Turkmenistan, Uzbekistan].