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Dinghushan | Family List | Cyperaceae | Gahnia

Gahnia baniensis Benl

散穗黑莎草

Description from Flora of China

Gahnia javanica Zollinger & Moritzi var. penangensis C. B. Clarke; G. penangensis (C. B. Clarke) Kükenthal.

Culms ca. 90 cm tall, robust, terete, rigid, noded. Leaf sheath blackish brown, 8-15 cm; leaf blade equaling or slightly longer than inflorescence, 8-12 mm wide, papery to leathery, margin scabrous, apex acuminate. Involucral bracts usually shorter than inflorescence. Inflorescences black, 40-70 × 6-15 cm, spreading and lax, consisting of a terminal and several lateral panicles. Spikelets blackish, in clusters of 2 or 3 or solitary, oblong, 4-5 mm, 2-flowered. Glumes 7 or 8, blackish brown, rigid; basal 5 or 6 glumes ovate to ovate-elliptic, 2-3 mm, keeled, empty, apex mucronate; apical 2 glumes broader, bearing a bisexual flower and next a functionally male flower, margin ciliolate, apex obtuse. Perianth bristles absent. Stamens (2 or)3; filaments scarcely elongate after anthesis, sticky tips of filaments of bisexual flower cohering with tips of basal male flower. Stigmas 3. Nutlet reddish brown, ellipsoid, ca. 3 mm, 3-sided, smooth, shiny. Fl. and fr. Aug-Sep.

Moist hills and slopes; 800-1500 m. Fujian, Guangdong, Guangxi, Hainan [Indonesia, Japan, Malaysia (Peninsular), Vietnam; Australia].

生活型: 草本

栽培植物: 野生

特征: 同黑莎草,但圆锥花序较宽而疏散,小穗长约6毫米,几黑色

生境: 生于水田中或田边湿润草地

用途: 同黑莎草,全草作盖屋或扫帚材料;果可榨油供制肥皂用

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 单子叶植物纲

中文别名: 爪畦黑莎草


 

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