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| 資料編號: | HK-1291 |
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| 中文名稱: | 杜仲藤 |
| 學名: | Urceola micrantha [找同屬植物] |
| 植物科名: (APG新系統) | APOCYNACEAE夾竹桃科 [找同科植物] |
| 標室舊系統 | APOCYNACEAE夾竹桃科[找同科] |
| 生長習性: | 攀藤_藤本 |
| 原生/外來: | 香港原生植物 |
| 圖片花色: | white_pink |
| 發現開花: | March |
| 特別特徵: | 單葉對生 |
| 資料更新: | 20200329 12:50:43 am |
| 備註: 參考資料來源1: Middleton D. J. 1996b. — A revision of Aganonerion Pierre ex Spire, Parameria Benth. and Urceola Roxb. (Apocynaceae). Blumea 41: 69-122. 參考資料來源1: Flora Malesiana Middleton D. J. 1996b. — A revision of Aganonerion Pierre ex Spire, Parameria Benth. and Urceola Roxb. p99-100: Branches with pale lenticels; branchlets minutely puberulent, rarely glabrous. Leaves: petiole 0.6-2 cm long; blade papery to subcoriaceous, elliptic to ovate, apex acuminate, base cuneate to rounded, 2.8-18 x 1.1-5.7 cm, 1.7-3.7 x as long as wide,3-7 pairs of lateral nerves, strongly ascending, tertiary venation weakly scalariform and reticulate, glabrous or with a puberulent petiole, usually with hairs in the axils of the secondary nerves with the midrib, occasionally completely glabrous, sometimes punctate beneath. Inflorescence ofaxillary and terminal cymes, usually forming a panicle, puberulent, rarely glabrous, 5.8-18 cm long; pedicels 0.6-6.2 mm long.Sepals ovate, sometimes reflexed, apex abruptly acuminate, obtuse or apiculate, 0.5-1 x0.4-0.8 mm, 0.9-2 x as long as wide, puberulent or glabrous, ciliate. Corolla[花冠]white or greenish white; lobes overlapping to the right in bud which is ovoid, open corollacampanulate; tube 0.7-1.5 mm long; lobes falcate to the right, 0.6-1.2 mm long, 0.4-1(-1.3) x as long as tube; glabrous outside, rarely sparsely pubescent on upperparts, pubescent inside. Stamens inserted a 0.2-0.5 mm from corolla base, which is 0.1-0.4 of the tube length; filaments 0.1-0.5 mm long; anthers 0.9-1.3 x 0.3-0.4 mm, 2.3-3.3 x as long as wide. Disc 5-crenate, 0.2-0.4 mm long. Ovary 0.3-0.7 mm long; style + pistil head 0.6-0.9 mm long. Fruit not stipitate [沒果柄], linear, follicles mostly divergent, lenticellate, glabrous, 6.7-25 cm long, 0.3-1 cm wide. Seed grain 7.3-18 x2.2-3.9 mm; coma 2.8-6 cm long. Note — This is a very variableand widespread species, most closely related to U. tournieri. Sometimesthe part of the corollalobe which is curved over and covered in the flower bud is very small which is probably what led to the synonym U. montana being described in Urceola at a time when the genera were distinguished on valvate versus overlapping corolla lobes. 勿看中誌, FOC, FoHK Lianas藤本植物 to 50 m or longer. stem 10–30 cm in diam.; branches often lenticellate. Petioles puberulent, 1.5–3 cm; leaf blade elliptic or narrowly ovate, 5–15 × 1.5–6 cm, base obtuse, apex narrowly acuminate, glabrous, lateral veins 3–7 on each side of midvein. Cymes paniculate, compact, to 9 cm; peduncle pubescent. Sepals ovate, ca. 0.8 – 1 mm, apex subacute. Corolla pink, lobes oblong, as long as to longer than the tube, to 2 mm, 1‑toothed near base. Filaments ca. 0.5 m; disk ring‑like. Ovary pilose; pistil head conical. Follicles narrowly ovoid, 9 – 23 × (0.4 – )1 – 1.2 cm, base dilated. Seeds oblong, 2 – 4 cm, coma ca. 4 cm. 中國植物誌 攀援灌木；枝有不明顯的皮孔。葉橢圓形或卵圓狀橢圓形，長5-8厘米，寬1.5-3厘米，頂端漸尖，基部銳尖；葉柄有微毛，長1-1.5厘米。聚繖花序總狀，密集，長9厘米；花小，水紅色；花萼5深裂，內面基部腺體不多或缺，裂片披針形，頂端銳尖；花冠壇狀，近鐘形，裂片在花蕾中內褶，長2毫米；雄蕊著生於花冠筒的基部，花絲長約0.5毫米；花盤環狀；子房具疏柔毛，花柱短，柱頭圓錐狀。蓇葖基部膨大，向頂端漸狹尖；種子長2厘米；種毛長4厘米。花期3-6月，果期7-12月。 | |
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