Senna surattensis
Content
Description
Shrub or small tree up to 7 m tall; young branches puberulous.
Leaves with 6-9 pairs of leaflets; petioles 1.5-3 cm; rachis up to 15 cm with a clavate, 1-2 mm long gland between the 2 or 3 lower pairs of leaflets.
Stipules linear falcate, 5-10 mm long, subpersistent.
Sepals: 2 outer more or less orbicular, c. 3 mm long; 3 inner obovate up to 7 mm long.
Petals yellow, subequal, ovate-obovate, 1.5-2 cm long with a 1-1.5 mm long, narrow claw.
Stamens 10 fertile, with short, thick filaments, 1-4 mm long; anthers subequal, 5-7 mm long, opening by apical slits.
Ovary puberulous; style glabrous; stigma indistinct.
Seeds 15-25, glossy flattened, 8 by 4 mm.
Distribution
Asia-Tropical, neotropics present
Origin uncertain. Irwin & Barneby (l.c.) quote Bentham who thought it native of N Australia, while later authors regard it as introduced there. It might come from the same area in India as the closely related Senna sulfurea, but it seems mainly, also here, to be a garden plant. It is also widely cultivated in the Neotropics.Malesia