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劍葉莎

來自 植物智 的圖片

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: 劍葉莎屬

種: 劍葉莎

劍葉莎(jiàn yè suō),學名 Machaerina ensigera (Hance) T. Koyama,俗名:劍葉克拉莎,異名:Cladium ensigerum ,多年生草本。根狀莖短,鬚根粗。 [1]

目錄

形態特徵

稈粗狀,高約2米,扁,有節。葉基生和稈生,二列套疊,革質,劍形,兩側壓扁,長達150厘米,寬18-22毫米,無中脈,具多數縱脈和小橫脈,平滑。苞片葉狀,具苞鞘。

圓錐花序大型,開展,由數枚多次復出的聚傘花序組成,長40-60厘米;小穗2-4枚簇生成頭狀,長約5毫米,有2-4朶花,僅下面1-2朶花結實;鱗片褐色,長方形,對摺,下部的長約4毫米,上部的漸小,被微柔毛,邊緣膜質,具緣毛,背部具龍骨狀突起;

下位剛毛4-9條,褐色,短於花柱;雄蕊3,花絲扁;花柱由上而下漸增大,中部以下具白色氈毛;柱頭3或2。小堅果倒卵形,有三銳棱,長約1毫米,褐色,具喙。

FOC >> Vol.23 (2010) >> Cyperaceae >> Machaerina | eFloras.org Link 2.Machaerina ensigera (Hance) T. Koyama Bot. Mag. (Tokyo). 69: 63. 1956.劍葉莎 jian ye suo

Cladium ensigerum Hance, J. Bot. 23: 80. 1885.Rhizomes horizontal, 4.5-6.8 mm thick. Culms flattened. Leaves basal; leaf blade ensiform, 3.8-50 × 0.7-2.5 cm, rigid, many veined, margin purple, finely scabrous, and denticulate.

Inflorescences paniculate, narrow, usually 3-branched. Spikelets purple, ca. 11.3 × 3.5 mm, 2- or 3-flowered. Glumes ovate-lanceolate, apex acuminate.

Nutlet subdrupaceous, ellipsoid, 3-furrowed; persistent style base thickened. Fl. and fr. Apr-Aug.

生長環境分布範圍

● Swamps, lake margins. Hong Kong. No specimen has been seen by the present authors.No specimen has been seen by the present authors.

參考文獻