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十齿花Dipentodon sinicus Dunn

花匠小妙招
2024-11-28 21:01

十齿花Dipentodon sinicus Dunn

别名：十齿萼花;十萼花;青铁果;

科名：卫矛科 Celastraceae

属名：十齿花属 Dipentodon

《中国植物志》第45(3)卷177页
  1.十齿花（中国高等植物图鉴）图版44: 1-3
  Dipentodon sinicus Dunn 1. c.; Merr. 1. c.; Loes in Engl. et prantl. 1. c.; 中国高等植物图鉴2: 687.图3104. 1972; J. S. Liu et C. Y. Cheng 1. c.图1, F-J. 1991.
  落叶或半常绿灌木或小乔木，高3-11米。叶纸质，披针形或窄椭圆形，长7-12厘米，宽2-4厘米，先端长渐尖，基部楔形或阔楔形，边缘有细密浅锯齿，侧脉5-7对，多在近叶缘处结网；叶柄长7-10毫米。聚伞花序近圆球状；花序梗长2.5-3.5厘米；小花梗长3-4毫米，中部有关节；总苞片4-6，卵形，早落；花白色，直径2-3毫米；花萼花冠密接，萼片与花瓣均为5（-7），形状相似；花盘肉质，浅杯状，上部5（-7）裂，裂片淡黄色，长方形，直立；雄蕊5（-7），具长花丝，伸出花冠之外；子房具短花柱，柱头小。蒴果窄椭圆卵状，外被浓密灰棕色长柔毛，花萼花冠均宿存呈十齿状，先端宿存花柱较短壮，长3-5毫米，小果梗常向下弯曲；种子黑褐色，卵状，基部种子柄长约2毫米。
  产于贵州、广西及云南南部。生长于海拔900-3200米的山坡沟边、溪边和路旁。模式标本采自云南蒙自。

《Flora of China》 Vol. 11 (2008)
Dipentodon sinicus Dunn
十齿花 shi chi hua
Dipentodon longipedicellatus C. Y. Cheng & J. S. Liu.
Shrubs or trees, 3-10(-15) m tall, semievergreen. Branchlets purplish brown, sparsely lenticellate. Stipules narrowly lanceolate, ca. 1 cm, membranous, caducous, margin serrulate. Petiole 7-10 mm; leaf blade ovate, elliptic, lanceolate, narrowly elliptic, or oblong-elliptic, 7-15(-20) × 2-9 cm, thinly leathery to papery, abaxially glabrous but puberulent along midvein and base of secondary veins particularly when young, adaxially glabrous and shiny, base often slightly oblique and nearly rounded, cuneate, broadly cuneate, subtruncate, or subcordate, margin sharply serrulate, apex narrowly acuminate. Inflorescences globose umbels of abbreviated cymes, 1.5-2.5 cm in diam. at anthesis, to 100- or more flowered; peduncle (2.5-)4-7(-10) cm, puberulent; bracts 4 or 5, at apex of peduncle, membranous, abaxially puberulent, caducous usually before anthesis. Pedicel 5-10 mm, somewhat elongating after anthesis, puberulent. Sepals and petals undifferentiated, 10-14, linear, ca. 1 mm, erect, puberulent, persistent, apex acuminate. Stamens 5-7; filaments ca. 2 mm, exserted from perianth; anthers purplish, ellipsoid, ca. 0.4 mm. Ovary pubescent; style 2-3 mm at anthesis, basally puberulent, apically glabrous, becoming a beak in fruit; stigma subdiscoid, small. Capsule purplish brown, drupaceous, broadly ellipsoid to ovoid, 6-10 mm including persistent style, slightly longitudinally ridged, sparsely puberulent but apically more densely so, base with a ca. 5 mm stipe usually bending when mature, 1-seeded. Seeds blackish brown, ellipsoid, 4-5 mm. Fl. May-Sep, fr. Aug-Oct.
Mountain slopes in broad-leaved evergreen forests, riverbanks, trailsides; 900-3200 m. NW Guangxi, SW Guizhou, SE Xizang (Mêdog), NW and S Yunnan [?NE India, N Myanmar].
Reported from NE India by Bhattacharyya and Johri (Fl. Pl. Taxon. & Phylogeny, 75. 1998) but no specimens from there have been seen by the authors.