All Floras      Advanced Search
Login | eFloras Home | Help
Dinghushan | Family List | Asclepiadaceae | Marsdenia

Marsdenia tinctoria R. Br.

蓝叶藤

Description from Flora of China

Marsdenia globifera Tsiang; M. tinctoria var. brevis Costantin; M. tinctoria var. tomentosa Masumune ex Tsiang & P. T. Li.

Lianas to 5 m, densely to sparsely pubescent when young, glabrescent. Petiole 1-4 cm; leaf blade oblong to broadly ovate, 5-13 × 2-7 cm, thin papery, bluish when dry, base rounded to cordate, apex acuminate; lateral veins 5-7 (-10) pairs. Inflorescences dense, globose to long racemelike clusters of cymules, (1.5-)3-15 cm; peduncle (0.5-)2.5-5 cm. Pedicel 3-5 mm. Sepals suborbicular, ca. 2 mm. Corolla yellowish white, dark blue when dry, urceolate, 3.5-4(-6) mm long, throat with a ring of hairs, otherwise glabrous; tube ca. 2.5 mm; lobes ovate, 1-1.5 mm, apex rounded. Corona lobes 5, lanceolate, as long as anthers. Pollinia narrowly oblong. Stigma head discoid, slightly convex at apex. Follicles oblong-lanceolate, 5-10 cm × 8-10 mm, pilose to subtomentose. Seeds ovate, ca. 10 × 3 mm; coma 1-2 cm. Fl. Mar-Nov, fr. Jul-Dec.

The bark, leaves, and flowers are used in making a blue dye.

As here delimited, Marsdenia tinctoria includes a wide range of forms which need more detailed investigation, and several taxa might be involved. There is also considerable variation in the relative length of corona to anthers and in the size, shape, and indumentum of fruits. The Chinese material has distinctly narrower and often paler leaves than Indian material and also lacks the very long spiral rachis of typical M. tinctoria. Marsdenia globifera was based on material with diseased flowers.

Humid mixed woods; 400-1000 m. Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Sichuan, Taiwan, Xizang, Yunnan [Bhutan, India, Indonesia, Japan (Ryukyu Islands), Laos, Malaysia, Myanmar, Nepal, Philippines, Sri Lanka, Thailand, Vietnam]

生活型: 藤本

栽培植物: 野生

特征: 木质藤本;

花期: 5

生境: 见于东岗坑山谷密林中

用途: 叶可提取蓝色染料;果入药治心胃气痛;韧皮纤维可织布制绳和渔网

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: 肖牛耳藤


 

Related Objects  

Flora of China  
  • Illustration
  • Illustration
  • Illustration
  • Illustration

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |