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資料編號: | HK-2124 |
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中文名稱: | 葉下珠_珍珠草(TBC) |
學名: | Phyllanthus urinaria [找同屬植物] |
英文名稱: | Night-closing Leaf |
英文別名: | Common Leaf-flower |
植物科名: (APG新系統) | PHYLLANTHACEAE葉下珠科 [找同科植物] |
標室舊系統 | EUPHORBIACEAE大戟科[找同科] |
生長習性: | 草本 |
原生/外來: | 香港原生植物 |
圖片花色: | white |
圖片果色: | red_green |
資料更新: | 20210808 09:37:43 pm |
備註: TBC:REF: Mercury Phyllanthus urinaria 葉下珠,大戟科(葉下珠科)植物。比想像中少見,較常見的相信是擬葉下珠P. embergeri。分別在於此種花盤近全緣,種子左右兩側表面各具2 - 4小孔,擬葉下珠花盤則有手指狀突起,種子無或具一淺小孔。 the plant list: 葉下珠/珍珠草 P. urinaria= 疣果葉下珠 P. urinaria var. hookeri = P. hookeri FoHK Annual herb; stems slightly compressed, erect or decumbent at base, up to 80 cm tall; branchlets puberulous. Leaves thin papery, distichous; stipules ovate-lanceolate, ca. 1.5 mm, conspicuously auriculate at base; petioles very short; leaf blade oblong to oblong-obovate or nearly linear, sometimes slightly falcate, 4–10 × 2–5 mm, base mostly obtuse and sometimes conspicuously asymmetrical, apex rounded, obtuse or acute, mucronulate, hispidulous near the margin on abaxial surface; lateral veins 4–5 pairs, conspicuous. Flowers minute, almost sessile, 2–4 in axillary fascicles; the females solitary, the males 2 or 3 together; sepals 6, yellowish-white, ovate in the males, narrower in the females; stamens 3, anthers on a central column; styles 3, free, bilobed, lobes revolute. Capsules depressed-globose, 2–2.5 mmin diam., with reddish blotches and scurfy-tuberculate; seeds triangular, 1–1.2 × 0.9–1 mm, light greyish-brown, with 12–15 sharp-transverse ridges on the back and sides. 中国植物誌 一年生草本,高10-60厘米,莖通常直立,基部多分枝,枝傾臥而後上升;枝具翅狀縱棱,上部被-縱列疏短柔毛。葉片紙質,因葉柄扭轉而呈羽狀排列,長圓形或倒卵形,長4-10毫米,寬2-5毫米,頂端圓、鈍或急尖而有小尖頭,下面灰綠色,近邊緣或邊緣有1-3列短粗毛;側脈每邊4-5條,明顯;葉柄極短;托葉卵狀披針形,長約1.5毫米。花雌雄同株,直徑約4毫米; 雄花:2-4朵簇生於葉腋,通常僅上面1朵開花,下面的很小;花梗長約0.5毫米,基部有苞片1-2枚;萼片6,倒卵形,長約0.6毫米,頂端鈍;雄蕊3,花絲全部合生成柱狀;花粉粒長球形,通常具5孔溝,少數3、4、6孔溝,內孔橫長橢圓形;花盤腺體6 ,分離,與萼片互生;雌花:單生於小枝中下部的葉腋內;花梗長約0.5毫米;萼片6,近相等,卵狀披針形,長約1毫米,邊緣膜質,黃白色;花盤圓盤狀,邊全緣;子房卵狀,有鱗片狀凸起,花柱分離,頂端2裂,裂片彎卷。 蒴果圓球狀,直徑1-2毫米,紅色,表面具-小凸刺,有宿存的花柱和萼片,開裂後軸柱宿存; 種子長1.2毫米,橙黃色。花期4-6月,果期7-11月。 | |
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