阿尔金山赖草
阿尔金山赖草 |
百合超目 Lilianae 禾本目 Poales 禾本科 Poaceae 赖草属 Leymus 阿尔金山赖草Leymus arjinshanicus D. F. Cui |
阿尔金山赖草(yī wú lài cǎo),学名 Leymus yiunensis N. R. Cui & D. F. Cui,异名:Leymus yiwuensis ,植株具延长根状茎。 丛生的秆,直立,厘米高,2或3(或4)有节。 叶鞘棕色在基部,无毛,边缘膜质,有时具短缘毛; 叶舌约0.5毫米,先端截形; 叶片 10-20 * 约0.3厘米,背面无毛,正面被微柔毛。 穗状花序直立或稍弯曲, [1]
目录
形态特征
植株具延长根状茎。 丛生的秆,直立,厘米高,2或3(或4)有节。 叶鞘棕色在基部,无毛,边缘膜质,有时具短缘毛; 叶舌约0.5毫米,先端截形;
叶片 10-20 * 约0.3厘米,背面无毛,正面被微柔毛。 穗状花序直立或稍弯曲,4-10 * 0.6-0.8 厘米; 每节点轴节间的5-7(-15)毫米小穗1;
小穗轴密被微柔毛; 大约线状披针形0.2毫米颖片,1脉节间, 下部的无毛的或上部粗糙背面, 第1 外稃10-12毫米,先端渐尖。 Palea 等于外稃,上半部纤毛背面,顶有点2裂。 花药黄,约毫米。花期 及果期7-9月。
FOC >> Vol.22 (2006) >> Poaceae >> Leymus | eFloras.org Link 22.Leymus arjinshanicus D. F. Cui阿尔金山赖草 a er jin shan lai cao
阿尔金山赖草 Leymus arjinshanicus Plants with extended rhizomes. Culms tufted, erect, 30–70 cm tall, 2- or 3(or 4)-noded. Leaf sheath brown at base, glabrous, margin membranous, sometimes ciliolate; ligule ca. 0.5 mm, apex truncate; leaf blade 10–20 × ca. 0.3 cm, abaxial surface glabrous, adaxial surface puberulent.
Spike erect or slightly curved, 4–10 × 0.6–0.8 cm; rachis internodes 5–7(–15) mm. Spikelets 1 per node; rachilla densely puberulent; internodes ca. 0.2 mm. Glumes linear-lanceolate, 1-veined, proximally glabrous or distally scabrous abaxially, margin shortly prickly, apex acuminate with point ca. 1 mm.
Lemma broadly lanceolate, obscurely 5-veined, glabrous or margin ciliate; first lemma 10–12 mm, apex acuminate. Palea equaling lemma, distal half ciliate abaxially, apex slightly bifid. Anthers yellow, ca. 4 mm. Fl. and fr. Jul–Sep.
产地生境
- Saline meadows; ca. 3100 m. Xinjiang (Altun Shan).
含盐草甸; 约3100米新疆(Altun Shan)。
辨析
In the Chinese text of the protologue (p. 216) and in the illustration caption (p. 217), the specific epithet was spelled "aerginshani-cus," whereas in the Latin text (p. 602) it was spelled "arjinshanicus." Under Art. 61.3 of the Saint Louis Code, we here explicitly adopt "arjinshanicus" and reject "aerginshanicus."
在这中国正文内那些原始描述(第216页)和在这插图标题内(第217页), 在艺术下。 圣路易代码中的61.3条,我们明确这里采用。