Colona winitii (PROSEA)

Plant Resources of South-East Asia Introduction

List of species

Colona winitii (Craib) Craib

Family: Tiliaceae

Synonyms

Columbia winitii Craib.

Vernacular names

• Thailand: po tin tao, yap (northern), po hu (eastern).

Distribution

Thailand and Cambodia.

Uses

The bark fibre is suitable for making string. The wood is used for cabinet work.

Observations

A tree, up to 10 m tall. Leaves distichous; petiole 0.5-1 cm long, hairy; blade ovate to oblong, 12-25 cm × 5.5-11.5 cm, oblique and auriculate at the base, margin doubly serrate, 3-cuspidate-caudate at the apex, palmately 5-7-veined, secondary veins 3-5 pairs, scalariform and reticulate veins distinct on upper surface. Inflorescence a cyme, arranged in a terminal or axillary panicle, 5-15 cm long; flowers bisexual; sepals 5, free, oblong; petals 5, free, oblong, 5-10 mm × 2-2.5 mm, slightly narrowed to the base; stamens free, glabrous; ovary globose, with 3-4 longitudinal grooves, diameter about 2 mm, hairy. Fruit ovoid, 3-4 winged, 0.5-1 cm × 1.5-2 cm (wings included). C. winitii is found in mixed deciduous forest at 100-800 m altitude. In Thailand flowering is from June to September and fruiting from July to December.

Selected sources

49, 160.

Authors

M. Brink, P.C.M. Jansen & C.H. Bosch