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資料編號: | HK-1768 |
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中文名稱: | 脈耳草 |
學名: | Hedyotis vestita [找同屬植物] |
異名: | Hedyotis costata |
英文名稱: | Veined Hedyotis |
植物科名: (APG新系統) | RUBIACEAE茜草科 [找同科植物] |
標室舊系統 | RUBIACEAE茜草科[找同科] |
生長習性: | 草本 |
原生/外來: | 香港原生植物 |
圖片花色: | purple_blue |
發現開花: | June |
特別特徵: | 葉對生 |
資料更新: | 20220809 10:12:38 pm |
備註: The Plant List: Hedyotis costata (Roxb.) Kurz [Illegitimate] Unresolved [此名為標室名] Hedyotis vestita R. Brown ex G. Don, Gen. Hist. 3: 526. 1834. (FOC) Herbs, annual or perennial, diffusely branched, weak to clambering or prostrate, to 60 cm tall; stems flattened, 4-angled, or subterete, sometimes sulcate, densely villous or hirsute with trichomes drying golden yellow. Leaves subsessile to petiolate; petiole 1-10 mm, densely hirtellous to villous; blade drying membranous to papery, lanceolate, elliptic-lanceolate, or elliptic, 2-8 × 0.5-3 cm, adaxially sparsely to densely strigose and/or strigillose to hirsute on lamina and moderately to densely pilosulous on principal veins, abaxially sparsely strigillose to glabrescent on lamina and densely strigose to hirsute on principal veins, base cuneate to obtuse and frequently decurrent, apex acute to usually acuminate; secondary veins 4-6 pairs; stipules fused to petiole bases, truncate to triangular, 2-4 mm, moderately to densely hirtellous, hirsute, or villous, with 3-5 linear or setose lobes 2-5 mm. Inflorescences axillary, congested-cymose, capitate, or fasciculate, 5-20 mm, densely hirtellous to hirsute, several to many flowered, pedunculate; peduncles 1-3 per leaf axil, 2-12 mm; bracts subulate, to 1 mm. Flowers sessile or subsessile, distylous. Calyx densely hirtellous to villosulous; hypanthium portion turbinate to obconic, ca. 0.5 mm; limb lobed nearly to base; lobes lanceolate to triangular, 0.3-1 mm. Corolla white or purple, tubular to funnelform, outside puberulent to pilosulous; tube 1.2-1.5 mm, pubescent in throat; lobes narrowly elliptic to triangular, 0.8-1.2 mm. Anthers 0.5-1 mm, exserted. Stigma 0.3-0.6 mm, exserted. Fruit indehiscent, subglobose, 0.8-1.5 mm in diam., pilosulous; seeds 6-8, black, trigonous. Fl. and fr. Jul-Nov. This species has been treated by many previous authors under the name Hedyotis costata; the basionym of that name, Spermacoce costata Roxburgh, is indeed the oldest name for this species, but that epithet was previously occupied for another species in Hedyotis when Kurz published his name and, thus, was blocked from transfer. 中國植物誌: 多年生披散草本,高30-50厘米,除花和果被短毛外,全部被乾後變金黃色疏毛;嫩枝方柱形,老時近圓柱形。葉對生,膜質,披針形或橢圓狀披針形,長5-8厘米,寬1.5-2.8厘米,頂端漸尖,基部楔形而下延;側脈每邊4-5條,纖細,明顯,與中脈成銳角斜向上伸;葉柄長5-10毫米;托葉膜質,基部合生,上部分裂成數條長3-5毫米的針狀刺。 聚繖花序密集呈頭狀,單個腋生或數個排成總狀花序式,有鑽形、長達1毫米的苞片;總花梗長5-12毫米;花4數,罕有5數,芳香,無梗或具極短的梗;萼管陀螺狀,長0.5毫米,萼簷裂片披針形,長約1毫米;花冠管狀,白色或紫色,長2.2-2.5毫米,管長1.2-1.5毫米,喉部以上被毛,花冠裂片長橢圓形,長約1毫米,漸尖;雄蕊與花冠裂片同數,著生于冠管喉部,花絲極短,花藥橢圓形、略扁,伸出;花柱長1.2-1.5毫米,中部以上被毛,柱頭2裂,裂片線形。果近球形,直徑1-1.5毫米,成熟時不開裂,宿存萼簷裂片三角形,廣展,長0.5毫米;種子每室3-4粒,三棱形,乾後黑色。花、果期7-11月。 | |
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