Pterospermum lanceaefolium Roxb. - STERCULIACEAE

Synonym : Pterospermum insulare Pierre
Pterospermum pierrei Hance

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Botanical descriptions Habitat and ecology Distribution

Botanical descriptions :

Habit : Deciduous or evergreen tree up to 20 m tall.
Trunk & bark : Bole straight, bark brown, fissured, slightly flaky.
Branches and branchlets or twigs : Twigs terete, hairy.
Exudates : Exudate absent.
Leaves : Leaves simple, alternate and spiral, oblanceolate, apex acute to cuspidate, base slightly asymmetrical, stellately hairy below, margin strongly toothed in upper half.
3-proeminent basal veins present, secondary veins oblique, widely parallel, tertiary veins horizontal.
Stipules deeply divided, persistent at apex.
Inflorescences or flowers : Flowers solitary, axillary, bisexual, pedicels longer than 0.5 cm.
Fruits : Fruit capsule, up to 8 cm long, woody, splitting in 5 sections.
Seeds : Seeds many, ovoid with a thin wing.

Habitat and ecology :

Fairly common in evergreen forest.

Distribution :

India, Burma (Myanmar), China (South), Malaysia (Peninsula), Thailand, Laos (Khammouan).

Remark/notes/uses :
The wood is strong and close grained.

Specimens studied :
BT 767 (Herbarium of Faculty of Sciences-NUoL, NHN-Leiden and CIRAD-Montpellier).

Literature :
Phengklai C. 2001. Sterculiaceae in Flora of Thailand 7: 610.

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