Dendrocnide stimulans (L.f.) Chew

Dendrocnide stimulans (L.f.) Chew




Laportea stimulans (L.f.) Miq., Laportea stenophylla Quisumb.

Vernacular Names

Malaysia Jelatang gajah, jelatang api, daun gatal (Peninsular).
English Nettle tree.
Indonesia Jalatong pulus (Sundanese), kemaduh sapi (Javanese), jelatang kayu (Sumatra).
Thailand Tamyae chaang (Central), saam kaeo (Peninsular), haan duea (Northern).
Vietnam M[as]n nam, han t[is]m.

Geographical Distributions

Dendrocnide stimulans is found in Southern China, Indo-China, Thailand, Peninsular Malaysia, Sumatra, Java, Lesser Sunda Islands, Moluccas, Sulawesi, Borneo, the Philippines and Taiwan.


D. stimulans is a unisexual flowered tree measuring up to 7 m tall. The branches are rather widespread with light bark grey, lenticellate and the twigs without irritant hairs.

The leaves are elliptical to obovate, measure (12-)15-30(-40) cm x (4-)6-10(-14) cm, base is wedge-shaped, rounded or notched at the extremity, apex is acuminate, margin usually entire, irritant hairs present supported by (2-)5-10(-15) cm long stalk and irritant hairs present with 0.8-2 cm long at stipules. They are hairy when young.

The raceme is branched, usually solitary, measures 10-55 cm long, bracteolate with 2-10-flowers at fascicles. The male flowers are sessile, measures 1-2 mm long, slightly hairy, filaments abruptly bent whereas female flowers are sessile and slightly sunken in a row of fleshy receptacles. The elongated flattened strap-shaped stigma measures 5 mm long.

A small dry indehiscent one-seeded fruit is asymmetrical, measures 2-4 mm x 2-4 mm, flattened and smooth to warty.

Ecology / Cultivation

D. stimulans is found in primary and secondary forest on sandy and loamy soils, from sea-level up to 1200 m altitude.

Line Drawing / Photograph



  1. Plant Resources of South-East Asia No 12(2): Medicinal and poisonous plants 2.