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資料編號: | HK-3816 |
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中文名稱: | 越南穀精草 |
中文別名: | 短萼穀精草 |
學名: | Eriocaulon fluviatile [找同屬植物] | [完整學名] |
異名: | Eriocaulon tonkinense |
植物科名: (APG新系統) | ERIOCAULACEAE穀精草科 [找同科植物] |
標室舊系統 | ERIOCAULACEAE穀精草科[找同科] |
生長習性: | 草本 |
原生/外來: | 香港原生植物 |
圖片花色: | white |
生長環境: | 水生植物_濕生植物_沉水植物 |
資料更新: | 20220830 10:24:44 am |
備註: Synonym: Eriocaulon yaoshanense Ruhland var. brevicalyx (C.H. Wright) W.L. Ma, Eriocaulon cristatum C. H. Wright var. brevicalyx C. H. Wright 葉為狹長線形, 葉脈為5 - 7條, 長在石質溪床環境, 能沉水生長。(Thanks HungTsun Cheng's info) Herb caulescent. Rhizomes elongate, 2–3 cm. Leaves all radical, narrow-linear to almost subulate, 7–25 cm × 0.6–0.8 mm. Scapes 15–25(–30) cm, stiff, 5–7-ribbed. Flower-heads subglobose, 3–8 mm in diam., brown or black at base and grey at apex; receptacle glabrous; involucral bracts broadly obovate, straw-coloured, blackish at apex; floral bracts obovate to cuneate, dark at the top and fringed with short white hairs. Male flowers: sepals connate into a spathe, apex 3-lobed, lobes nearly equal, posterior one flat, lateral ones boatlike, all fringed with short white hairs at top; petals 3, obovate to elliptic, with one larger than others, adaxially white clavate hairy toward apex, gland black; stamens 6, anthers milky white to brownish. Female flowers: sepals 3, similar that in males; petals 3, free, oblanceolatelinear, white clavate hairy adaxially and at apex, gland black; ovary 3-locular; style 3-cleft. 深圳植物誌: 一年生草本。植株高15-28cm。根狀莖長1-3cm。莖長1-2cm。葉片絲狀,長2-9cm,寬0. 6-0. 8mm,具橫格,基出平行脈5-7條。花葶1至數條,長6-30cm,粗0. 6-1. 3mm,稍扭轉,具5-7棱;鞘狀總苞片長2. 5-3. 7cm,口部膜質,斜裂;頭狀花序近球形,下半部褐色或黑色,上半部灰白色,直徑3-6mm; 總苞片卵形至倒卵形,禾稈色,先端黑色,厚膜質,不反折,長約2mm,寬約1. 5mm,無毛;花序托無毛;苞片倒卵形至近匙形,長1. 5-2mm,寬約1mm,背面上部與頂端具白色短柔毛;雄花:萼片3,合生成佛焰苞狀,頂端3裂,裂片近等長,長約1. 5mm,中萼片扁平,側萼片舟狀,背面上部及頂端有白短柔毛;花瓣3,橢圓形至倒卵形,近頂部各有1黑色較長的腺體,先端及內面有多數白色短柔毛;雄蕊6,花藥淡黃色至黃色;雌花:萼片3,合生或分離,側萼片舟形,中萼片較小,平坦,長約1. 5mm,背面上部及頂端有白色短柔毛;花瓣3,分離,倒披針狀條形,近頂端各有1黑色腺體,內面及頂端有多數色短柔毛;子房3室,花柱上部分枝3,分枝長於花柱。種子卵球形,長約0. 5mm,表面具不明顯網紋。無突起。花期:花、果期:10月至翌年1月。 | |
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5-3816e | |
4-3816d | |
3-3816c | |
2-3816b | |
1-3816a | |