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高画眉草,Eragrostis alta Keng

○畏,奶牛 2021-11-29 00:52:46 1606

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高画眉草,Eragrostis alta Keng档案信息

高画眉草Eragrostis alta Keng

科名:禾本科 Gramineae

属名:画眉草属 Eragrostis

高画眉草,Eragrostis alta Keng

《中国植物志》第10(1)卷030页
  28. 高画眉草(海南植物志)图版7:4-6,123:3
  Eragrostis alta Keng in Lingn. Sci. Journ. 16: 1. 1937; Merr. et Chun in Sunyatsenia 5:17. 1940: 海南植物志4: 374. 1977.
  一年生。秆直立,粗壮,高120-150厘米,径约5毫米,具有条纹。叶鞘疏松裹茎,无毛,具有明显的条纹;叶舌长约1毫米,边缘具短纤毛;叶片扁平,长20-45厘米,宽3-5毫米,无毛,下面粗糙,色稍浅,上面光滑。圆锥花序紧缩,长20-40厘米,宽约3厘米,花序分枝单生或成对,直立,分枝腋间无毛,小穗有5-9小花,长2-3毫米,宽0.8-1毫米;小穗柄直立或弯曲,小花在小穗轴上排列松散,黄绿色,无毛;颖膜质,近等长,长约0.7毫米,卵圆形,具1脉,先端钝;第一外稃长约1毫米,具3脉,先端钝或稍急尖;内稃脊间折合,脊上无毛,或略有短纤毛;雄蕊2枚,长约0.4毫米。未见到果。
  特产海南;生于林下潮湿沙土上。模式标本采自昌江。

《Flora of China》 Vol. 22 (2006)
Eragrostis alta Keng
高画眉草  gao hua mei cao
Annual. Culms erect, 120–150 cm tall, ca. 5 mm in diam., striate. Leaf sheaths loose, glabrous distinctly striate; ligules ca. 1 mm, ciliolate along margin; leaf blades greenish, 20–45 × 0.3–0.5 cm, adaxial surface smooth, abaxial surface scabrous. Panicle contracted 20–40 × ca. 3 cm; branches solitary or in pairs, ascending glabrous in axils. Spikelets yellowish green, glabrous, 2–3 × 0.8–1 mm, 5–9-flowered; rachilla disarticulating between florets from top downward at maturity; pedicels straight or curved, eglandular. Glumes ovate, membranous, subequal, ca. 0.7 mm, 1-veined, apex obtuse. Lemmas apex obtuse or slightly acute, lower lemma ca. 1 mm. Palea along 2 keels glabrous or slightly ciliolate. Stamens 2; anthers 0.3–0.4 mm. Fl. and fr. spring and early summer.
* Forests, moist places. Hainan.

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