Tropical Little Tree Plant is an annual herb 5-25 cm
tall, base woody. Flowers are borne in several flowered umbels carried
on flower-cluster-stalks 2-7 cm, nearly equal to leaf length. Petals
are yellow, longer than sepals. Sepals are 5-6 mm, with glandular
septate trichomes. Flower-stalks are about 1 mm at anthesis but up to 3
mm in fruit. Bracts are several, lanceshaped, about 2 mm, densely
crowded at tip of flower-cluster-stalk, cluster about 3 mm. Stem is
simple, slender to robust, bristly especially apically. Leaves are 3-13
cm; axis slender, moderately bristly; leaflets 6-14 pairs; leaflet
blades oblong to obovate-oblong, 3-15 x 2-7 mm, usually hairless,
occasionally sparsely covered with trichomes, base almost symmetric.
Leaves are sensitive to touch, and fold up on being disturbed. Capsule
ellipsoid-obovoid, 4-5 × 3-4 mm, velvet-hairy. Tropical Little Tree
Plant is found in Tropical & Subtropical Asia. In India it is found in
East Himalaya and Peninsular India, and also in Nepal. Flowering:
July-December.