Compilation of herbal plants (description, geographical distribution, taxonomy, line drawings), biodiversity and herbarium.

Read More
Research & Publication

Description of herbal and T&CM research, searchable publication and process from medicinal plant discovery to clinical trial in producing a high-quality registered herbal drug.

Read More
Traditional & Complementary Medicine (T&CM)


Definition and description of therapies, policy, training and education, research in the practise of (T&CM) and integrated medicine system.           

Read More


News Update

Announcement & Advertisement

Forthcoming Events

International Conference on Traditional Medicine and Phytochemistry 2021

From Mon, 12. July 2021 Until Wed, 14. July 2021

Asian Symposium on Medicinal Plants and Spices XVII (2020)

From Tue, 17. August 2021 Until Thu, 19. August 2021

Derris microphylla (Miquel) B.D. Jackson

Derris microphylla (Miquel) B.D. Jackson




Brachypterum microphyllum Mi­quel, Derris dalbergioides Baker, Deguelia microphylla (Miquel) Valeton.

Vernacular Names


Daun berayai, batai, betek (Peninsular).


Vetch tree


Kayu retak (Palembang).


Khangten (south-eastern), di-ngu, fantae (peninsular).

Geographical Distributions

Derris mi­crophylla occurs naturally in Sumatra, Peninsular Malaysia, Thailand, Burma (Myanmar) and possi­bly in Indo-China. Its natural occurrence in Java, where it is often planted, is uncertain.


Derris mi­crophylla is a tree with several ascending branches, with an umbrella-shaped, feathery crown and can reach up to 5-20 m tall. Its bark is light-grey to brown and slightly fissured. The branchlets, petioles and buds are golden-brown silky and nearly hairless.

The leaves are imparipinnate. The petiole and rachis are 9-20 cm long while the petiolule is 1-2 mm long. There are 19-43 leaflets, which are elliptical-oblong, measuring 1.5-3.2 cm x 0.8­1.2 cm, rounded-emarginate at both ends where both surfaces are thinly appressed brown hairy and glaucous below.

The inflorescence is an axillary raceme, and measures 2-13 cm long. The flowers are 7-8 mm long. The pedicel is 0.5-1.5 cm long. The sepal is bell-shaped while the petal is dark ­red to violet. The upper part of petal measures 9 mm x 7 mm that bears 2 glands at the base. There are 10 stamens which are monadelphous, where 1 sta­men is free at the top and the bottom but adnate to stamen tube in the centre.

The pod is flat, elliptical to lin­ear-Iance-shaped in outline, measuring 2.5-7 cm x 1.2-1.7 cm, 1-2(-5)­seeded, indehiscent, narrowed at both ends and smooth to hairy. The brown-green seed measures 6 mm x 3 mm.

Ecology / Cultivation

In Java and Peninsular Malaysia, Derris mi­crophylla occurs from 200-1200 m altitude. It is tolerant of strong winds. To provide shade in plan­tations, it is mostly planted in soils too poor for Leucaena leucocephala (Lamk) de Wit or Paraserianthes falcataria (L.) Nielsen.

Line Drawing / Photograph



  1. Plant Resources of South-East Asia No.11: Auxiliary plants.

Explore Further

Consumer Data

Consumer data including medicinal herbs, dietary supplement monographs, health condition monographs and interactions and depletions.                                    

Read More
Professional Data

Professional data organized into medicinal herbs, dietary supplement monographs, health condition monographs, T&CM herbs, formulas, health conditions, interactions and depletions.

Read More
International Data

We offer International linkages to provide extensive content pertaining to many facets of T&CM as well as Integrated Medicine. Please register for access.    

Read More