Acrotrema costatum Jack

Family

Dilleniaceae

Synonyms

None

Vernacular Names

Geographical Distributions

Acrotrema costatum is distributed from southern Burma (Myanmar), peninsular Thailand, Peninsular Malaysia and northern Sumatra; possibly also in Bangka.

Description

A. costatum is a small perennial herb with a horizontal woody rhizome.

The leaves are in a rosette or on a very short stem and then arranged spirally, simple, obovate, measuring 7-25 cm x 3-10 cm, dentate, auriculate at the base, hairy, deep green and usually with a whitish or greyish area along the midrib or marked with red. The petiole is measures 1-2(-6) cm long.

The inflorescence is a terminal erect raceme, red-hairy, bracteates and up to 12-flowered. The flowers are regular, 5-merous, bisexual, open singly and about 3 cm in diametre. The petals are yellow in colour. The stamens are numerous and in 3 bundles. The carpels are 3.

The fruit is a follicle that enclosed by the persistent sepals, irregularly dehiscent and up to 15 seeds.

The seeds are finely echinate and with a white aril.

Ecology / Cultivation

A. costatum occurs in dense rain forest, also in secondary forest, often on moist shady rocks, up to 1000 m altitude. It is common in many localities.

Line Drawing / Photograph

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References

1. Plant Resources of South-East Asia No. 12 (3): Medicinal and poisonous plants.