Wrightia pubescens Brown - APOCYNACEAE

Synonym : Wrightia javanica A.DC.
Wrightia annamensis Eberh. & Dubard
Wrightia tomentosa Roem. & Schult. var. cochinchinensis Pierre ex Pit.

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Botanical descriptions Habitat and ecology Distribution

Botanical descriptions :

Diagnostic characters : Deciduous trees with white sap, opposite leaves, densely pubescent below.
Habit : Deciduous tree up to 15 m tall.
Trunk & bark : Bole straight, bark brown, flaky, slightly fissured.
Branches and branchlets or twigs : Twigs terete, glabrous.
Exudates : Exudate white.
Leaves : Leaves simple, opposite, elliptic, below densely pubescent, apex acute, base acute to acuminate, margin entire.
Primary vein single, secondary veins oblique 8-15 pairs, tertiary veins reticulate.
Stipules absent.
Inflorescences or flowers : Flowers white, arranged in a many-flowered inflorescence, terminal, bisexual, pedicels shorter than 0.5 cm.
Fruits : Fruit a dry follicle, up to 35 cm long, splitting into 2 sections.
Seeds : Seeds many, with a long tuft of hairs at one end.

Habitat and ecology :

Common in especially deciduous open forest.

Distribution :

Australia (North East), Burma (Myanmar), Cambodia, China (South), India, Malaysia through to New Guinea, Thailand, Vietnam, Laos.

Remark/notes/uses :
The wood is used to make furniture and musical instruments. The latex has been used against severe dysentery, the roots and barks are used in poultices.

Specimens studied :
BT 1104, LAO 461, LAO 811 (Herbarium of Faculty of Sciences-NUoL, NHN-Leiden and CIRAD-Montpellier).

Literature :
Hoang Van Sam, Khamseng Nanthavong & P.J.A. Keßler. 2004. Trees of Laos and Vietnam. Blumea 49: 201--349.

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