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Dinghushan | Family List | Euphorbiaceae | Bridelia

Bridelia tomentosa Bl.

土密树

Description from Flora of China

Bridelia tomentosa var. chinensis Müller Argoviensis.

Erect shrubs or treelets, usually 2-5(-12) m tall, monoecious or dioecious; branches slender and elongate, "whip-like," often overhanging, pubescent when young, glabrescent, older branches with some spines. Stipules ovate to linear-lanceolate, 2-7 mm, usually caducous, pubescent; petiole 3-5.5 mm, pubescent; leaf blade elliptic, lanceolate-elliptic, or obovate-elliptic, 3-9(-14) × 1.5-5(-6) cm, (thinly) papery, abaxially light greenish and usually pubescent, adaxially scabrous, base obtuse, rarely broadly cuneate or rounded, apex acute to obtuse; lateral veins 7-12(-15) pairs. Flowers axillary, yellow-green, up to 10(-20)-fascicled, sessile. Male flowers: sepals triangular, 0.8-1.2 × 0.5-1 mm; petals spatulate or obovate, entire or 3-5-toothed, ca. 1 × 0.8 mm; disk shallowly cup-shaped, 1-1.2 mm in diam.; staminal column ca. 0.7 mm; free filaments ca. 0.5 mm; rudimentary ovary conical. Female flowers usually 3-5-fascicled, subsessile; sepals triangular, 1-1.5 × 0.8-1.2 mm, glabrous to pubescent outside; petals as in male, shorter than sepals; disk pulvinate and urceolate, enclosing ovary for ca. 0.6 mm; ovary globose to ovoid, ca. 1 mm in diam.; styles 2, bipartite, lobes linear. Drupes subglobose, 4-7 × ca. 5 mm, 2-celled. Seeds semiovoid, 3-4 × 2-3 mm, brown-red, rugulate, adaxial surface compressed with longitudinal groove, abaxial surface slightly elevated with longitudinal stripes. Fl. and fr. almost throughout year.

Since indumentum density varies widely, no varieties should be recognized based on this character (see Forster, Austrobaileya 5: 416. 1999). Merrill identified Clutia monoica Loureiro as this species and published the combination Bridelia monoica (Loureiro) Merrill, but Loureiro’s plant is not this species. The name "Bridelia chinensis Müller Argoviensis" also belongs here but was never validly published.

The leaves are used as medicine for traumatic injury; the roots are used to treat epidemic influenza and neurasthenia. The bark yields up to 8% tannin.

Deciduous to evergreen primary or secondary forests or thickets; near sea level to 1000(-1500) m. Fujian, Guangdong, Guangxi, Hainan, Taiwan, Yunnan [Bangladesh, Bhutan, Cambodia, E India, Indonesia, Laos, Malaysia, Myanmar, Nepal, New Guinea, Philippines, Singapore, Thailand, Vietnam; N Australia].

生活型: 乔木, 灌木

栽培植物: 野生

特征: 灌木或小乔木;树干无刺,小枝顶部有黄褐色毛,核果近圆球形

花期: 9

果期: 冬月

生境: 生于林中、灌丛、路旁

用途: 药用,根皮治神经衰弱、月经不调,茎、叶治狂犬咬伤,叶治跌打骨折、湿热腹泻、痢疾及一般热症,兽用治牛腹泻有良效;树皮可提制栲胶;木材供农具、细工用材;蜜源植物

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 双子叶植物纲

中文别名: 逼迫子


 

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