矮飄拂草
矮飄拂草 |
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中文名:矮飄拂草 拉丁學名:Fimbristylis nanofusca Tang et Wang, sp. nov. 界:植物界 門:被子植物門 綱:單子葉植物綱 目:莎草目 科:莎草科 屬:飄拂草屬 種:矮飄拂草 分布區域:浙江 |
矮飄拂草(ǎi piāo fú cǎo),學名 Fimbristylis fimbristyloides (F. Mueller) Druce,異名:Fimbristylis nanofusca Abildgaardia fimbristyloides ,為一年生莎草科草本植物,為飄拂草變異品種,產於中國浙江。 [1]
目錄
矮飄拂草形態特徵
稈叢生,高5-13厘米。基生葉線形,稍彎,長約為稈1/2強,寬1-1.5毫米,有緣毛,頂端急尖。苞片2枚以上,葉狀,長5-18毫米,寬不到1毫米;
頂端漸尖,被短硬毛,長側枝聚繖花序簡單,少數近於復出,輻射枝長1-3厘米,被毛;小穗單生於輻射枝頂端,卵形或短卵形,稍扁,長4-5毫米,寬約1.5毫米,最下面的1-3片鱗片內無花;
鱗片卵形,膜質,長2.5-3毫米,棕色,無銹色細點,被短硬毛,背面具1條中脈呈龍骨狀隆起且伸出於鱗片頂端呈短尖,無花鱗片稍短,並有略長的芒;雄蕊3;
子房圓筒狀,三稜形,白色,花柱長約2毫米,基部膨大,淺棕色,柱頭3。小堅果三稜狀倒卵形,基部截形,具很短的柄,淡黃色或近於白色,有多數疣狀突起。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.
矮飄拂草 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.
分類文獻
《中國植物志》 第11卷 (1961) >> 105頁 PDF >> 矮飄拂草 Fimbristylis nanofusca SYN 註:學名已修訂,接受名為Fimbristylis fimbristyloides。 43.矮飄拂草
Fimbristylis nanofusca Tang et Wang, sp. nov.
矮飄拂草生長環境
生長在山坡上。
矮飄拂草分布範圍
產於中國浙江。