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矮飘拂草 |
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中文名:矮飘拂草 拉丁学名:Fimbristylis nanofusca Tang et Wang, sp. nov. 界:植物界 门:被子植物门 纲:单子叶植物纲 目:莎草目 科:莎草科 属:飘拂草属 种:矮飘拂草 分布区域:浙江 |
矮飘拂草(ǎi piāo fú cǎo),学名 Fimbristylis fimbristyloides (F. Mueller) Druce,异名:Fimbristylis nanofusca Abildgaardia fimbristyloides ,为一年生莎草科草本植物,为飘拂草变异品种,产于中国浙江。 [1]
矮飘拂草形态特征
秆丛生,高5-13厘米。基生叶线形,稍弯,长约为秆1/2强,宽1-1.5毫米,有缘毛,顶端急尖。苞片2枚以上,叶状,长5-18毫米,宽不到1毫米;
顶端渐尖,被短硬毛,长侧枝聚繖花序简单,少数近于复出,辐射枝长1-3厘米,被毛;小穗单生于辐射枝顶端,卵形或短卵形,稍扁,长4-5毫米,宽约1.5毫米,最下面的1-3片鳞片内无花;
鳞片卵形,膜质,长2.5-3毫米,棕色,无锈色细点,被短硬毛,背面具1条中脉呈龙骨状隆起且伸出于鳞片顶端呈短尖,无花鳞片稍短,并有略长的芒;雄蕊3;
子房圆筒状,三稜形,白色,花柱长约2毫米,基部膨大,浅棕色,柱头3。小坚果三稜状倒卵形,基部截形,具很短的柄,淡黄色或近于白色,有多数疣状突起。花果期8月。
FOC >> Vol.23 (2010) >> Cyperaceae >> Fimbristylis 51.Fimbristylis fimbristyloides (F. Mueller) Druce Rep. Bot. Soc. Exch. Club Brit. Isles. 4: 623. 1917.
矮飘拂草 ai piao fu cao Abildgaardia fimbristyloides F. Mueller, Fragm. 8: 273. 1874; Fimbristylis nanofusca Tang & F. T. Wang.
Annuals. Culms tufted, 5-13 cm tall, with radical leaves. Leaves slightly more than 1/2 as long as culm; leaf blade linear, 1-1.5 mm wide, slightly curved, margin ciliate, apex acute.
Involucral bracts 2 or more, leaflike, 0.5-1.8 cm, less than 1 mm wide, hispid, apex acuminate. Inflorescence a simple or rarely subcompound anthela; rays 1-3 cm, hairy. Spikelets solitary, ovoid to broadly ovoid, 4-5 × ca. 1.5 mm, slightly compressed, with basal 1-3 glumes empty.
Glumes brown, ovate, 2.5-3 mm, membranous, not densely gland-dotted, hairy, midvein abaxially forming a slight keel and excurrent into a mucro; empty glumes shorter than fertile ones, with longer awns. Stamens 3. Ovary white, cylindric, 3-sided; style pale brown, ca. 2 mm, basally inflated; stigmas 3. Nutlet pale yellow to nearly white, very shortly stipitate, obovoid, 3-sided, verruculose, base truncate. Fl. and fr. Aug.
分类文献
《中国植物志》 第11卷 (1961) >> 105页 PDF >> 矮飘拂草 Fimbristylis nanofusca SYN 注:学名已修订,接受名为Fimbristylis fimbristyloides。 43.矮飘拂草
Fimbristylis nanofusca Tang et Wang, sp. nov.
矮飘拂草生长环境
生长在山坡上。
矮飘拂草分布范围
产于中国浙江。