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Acrotrema costatum Jack


Acrotrema costatum Jack





Vernacular Names

Malaysia Meroyan punai tanah (Pahang, Peninsular).
Thailand Pot khon, wan chai maha prap, san tao (Peninsular).

Geographical Distributions

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


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

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