All Floras      Advanced Search
Login | eFloras Home | Help
SCBG Checklist | Family List | Thymelaeaceae

Aquilaria Lam.

沉香属

Description from Flora of China

Agallochum Lamarck; Ophispermum Loureiro.

Trees or treelets. Leaves alternate, leaf blade pinnately veined; veins slender, ascending toward margins and joining several intramarginal veins. Inflorescences axillary or terminal, umbelliform or paniculiform, usually without involucre; peduncle short or absent. Flowers bisexual, pedicellate, usually 5-merous. Calyx tube persistent, yellow or yellowish green, campanulate; lobes 5, reflexed or erect. Petaloid appendages twice as many as the lobes, inserted at throat of tube, scalelike, united in a ring at base, usually densely pubescent or puberulous. Stamens twice as many as calyx lobes, alternating with petaloid appendages; filaments short or absent; anthers oblong, dorsifixed, pubescent, connectives broad. Disk absent. Ovary subsessile, pubescent, 2-loculed or incompletely 2-loculed; style very short; stigma capitate. Fruit a 2-valved loculicidal capsule, compressed laterally, obovoid, base enclosed by persistent calyx; pericarp leathery or woody. Seeds 2 or 1 by abortion, ovoid or ellipsoid, on carunclelike strongly tapered funicle; testa crustaceous, endosperm absent; cotyledons thick, plano-convex.

Members of this genus are important as the source of agarwood, a very highly prized aromatic gum produced in the wood in response to injury. It is used as incense, in perfumery, and in traditional medicine. Trees have been over-harvested throughout the range of the genus, and most species are of conservation concern. The genus as a whole is included in Category 2 of CITES.

About 15 species: Bhutan, Cambodia, China, NE India, Laos, Malaysia, Myanmar, Thailand, Vietnam; two species (both endemic) in China.

(Authors: Wang Yinzheng (王印政); Lorin I. Nevling, Michael G. Gilbert)

药用植物园 Medicinal Plants Area, 濒危园 Endangered Plants Garden, 标本园 Specimens Garden, 引种苗圃 Introducing Plants Nursery, 蒲岗保护区 Pu Gang Reserve

Lower Taxa


 

Related Objects  

Flora of China  
  • Aquilaria.pdf
  • PDF

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