单叶豆Ellipanthus glabrifolius Merr.
单叶豆Ellipanthus glabrifolius Merr.
1. 单叶豆 知荆、鬼荔枝（广东）图版28： 1-4
Ellipanthus glabrifolius Merr. in Philip. Journ. Sci. 23:246. 1923; Schellenb. in Engl. Pflanzenr. H. 103: 183. 1938;中国高等植物图鉴2: 319. 图2368. 1972; 陈焕镛等, 海南植物志3: 110. f. 606. 1974.
灌木或乔木，高4-10米，有高至25米者；树皮灰褐色，枝与小枝为圆柱形，枝幼时被锈色短绒毛，后脱落无毛。单叶互生，叶薄革质，长圆形或长圆状披针形，长7-14厘米，宽2.5-4.5厘米，先端渐尖或短尖，基部圆形，全缘，两面无毛，侧脉4-7对，细脉网状明显；叶柄长1-2厘米，两端稍膨大。圆锥花序或聚伞花序，腋生或顶生，花序少分枝，长1.5-5厘米，被淡黄色短绒毛；花两性，萼片5，卵状披针形，长2毫米，外被短绒毛，花瓣5，白色，长圆状披针形，长6-7毫米，两面被短绒毛；雄蕊10，5枚发育，5枚极退化，花药淡棕色，花丝被长柔毛；心皮1，扁卵形，被长柔毛，1室。蓇葖果卵形，长12-20毫米，有喙，密被锈色绒毛；种子1，长1.5毫米，深褐色，稍有光泽，基部为2裂的假种皮所包围。花期10月至翌年3月，果期7月。
产广东海南岛。生于低海拔山地密林中，为季雨林中常见树种，又是海南特有种。
树皮含有鞣质，可提取栲胶。木材质坚重、耐腐，可作家具和建筑用材。
《Flora of China》 Vol. 9 (2003)
Ellipanthus glabrifolius Merrill
单叶豆 dan ye dou
Shrubs climbing or trees, 4–10(–25) m tall. Bark gray-brown. Branchlets terete, minutely ferrugineous tomentose when young, later glabrescent. Leaves 1-foliolate; petiole 1–2 cm, slightly inflated at both ends, glabrous; leaf blade oblong or oblong-lanceolate, 7–14 × 2.5–4.5 cm, thinly leathery, glabrous on both surfaces, veins prominent abaxially, lateral veins 4–7-paired, base rounded, margin entire, apex acuminate or shortly pointed. Inflorescences axillary or terminal, paniculate or glomerulate-racemose, 1.5–5 cm; rachis and pedicels minutely yellowish tomentose. Flowers bisexual. Sepals 5, ovate-lanceolate, 2–3 mm, shortly tomentose abaxially. Petals 5, white, oblong-lanceolate, 6–7 mm, shortly tomentose on both surfaces. Stamens ca. 10, unequal, 5 opposite sepals well developed, 5 opposite petals abortive; filaments villous; anthers bright brown. Carpel 1, compressed ovoid, 1-celled, villous. Follicle ovoid, 12–20 mm, densely ferrugineous tomentose, apex beaked. Seed 1, dark brown, slightly glossy, ca. 1.5 mm, base covered by 2-lobed aril. Fl. Oct–Mar, fr. Jul of following year.
Dense mountain forests; Low elevations. Hainan.
别名：知荆;鬼荔枝;
科名：牛栓藤科 Connaraceae
属名：单叶豆属 Ellipanthus
1. 单叶豆 知荆、鬼荔枝（广东）图版28： 1-4
Ellipanthus glabrifolius Merr. in Philip. Journ. Sci. 23:246. 1923; Schellenb. in Engl. Pflanzenr. H. 103: 183. 1938;中国高等植物图鉴2: 319. 图2368. 1972; 陈焕镛等, 海南植物志3: 110. f. 606. 1974.
灌木或乔木，高4-10米，有高至25米者；树皮灰褐色，枝与小枝为圆柱形，枝幼时被锈色短绒毛，后脱落无毛。单叶互生，叶薄革质，长圆形或长圆状披针形，长7-14厘米，宽2.5-4.5厘米，先端渐尖或短尖，基部圆形，全缘，两面无毛，侧脉4-7对，细脉网状明显；叶柄长1-2厘米，两端稍膨大。圆锥花序或聚伞花序，腋生或顶生，花序少分枝，长1.5-5厘米，被淡黄色短绒毛；花两性，萼片5，卵状披针形，长2毫米，外被短绒毛，花瓣5，白色，长圆状披针形，长6-7毫米，两面被短绒毛；雄蕊10，5枚发育，5枚极退化，花药淡棕色，花丝被长柔毛；心皮1，扁卵形，被长柔毛，1室。蓇葖果卵形，长12-20毫米，有喙，密被锈色绒毛；种子1，长1.5毫米，深褐色，稍有光泽，基部为2裂的假种皮所包围。花期10月至翌年3月，果期7月。
产广东海南岛。生于低海拔山地密林中，为季雨林中常见树种，又是海南特有种。
树皮含有鞣质，可提取栲胶。木材质坚重、耐腐，可作家具和建筑用材。
《Flora of China》 Vol. 9 (2003)
Ellipanthus glabrifolius Merrill
单叶豆 dan ye dou
Shrubs climbing or trees, 4–10(–25) m tall. Bark gray-brown. Branchlets terete, minutely ferrugineous tomentose when young, later glabrescent. Leaves 1-foliolate; petiole 1–2 cm, slightly inflated at both ends, glabrous; leaf blade oblong or oblong-lanceolate, 7–14 × 2.5–4.5 cm, thinly leathery, glabrous on both surfaces, veins prominent abaxially, lateral veins 4–7-paired, base rounded, margin entire, apex acuminate or shortly pointed. Inflorescences axillary or terminal, paniculate or glomerulate-racemose, 1.5–5 cm; rachis and pedicels minutely yellowish tomentose. Flowers bisexual. Sepals 5, ovate-lanceolate, 2–3 mm, shortly tomentose abaxially. Petals 5, white, oblong-lanceolate, 6–7 mm, shortly tomentose on both surfaces. Stamens ca. 10, unequal, 5 opposite sepals well developed, 5 opposite petals abortive; filaments villous; anthers bright brown. Carpel 1, compressed ovoid, 1-celled, villous. Follicle ovoid, 12–20 mm, densely ferrugineous tomentose, apex beaked. Seed 1, dark brown, slightly glossy, ca. 1.5 mm, base covered by 2-lobed aril. Fl. Oct–Mar, fr. Jul of following year.
Dense mountain forests; Low elevations. Hainan.