Andaman Bellthorn is a herb, up to 50 cm high.
Stems are quadrangular when young, round when mature, hairless. Leaves
leathery, ovate-elliptic, 1.5-4.5 x 1-2 cm, pointed to blunt at tip,
entire, wedge-shaped to narrowed at base, lateral nerves in 4-5 pairs;
leaf-stalks 4-5 mm long, hairless. Panicles at branch-ends, up to 8 cm
long, glandular velvet-hairy. Flower-cluster-stalks 1.5-3.0 cm long,
glandular velvet-hairy. Bracts linear, about 3.0 x 0.5 mm, hairless.
Bracteoles 2, about 1.2 x 0.3 mm, glandular velvet-hairy. Flower-stalks
ca 2 mm long, glandular velvet-hairy. Sepals 5, linear, about 3.0 x 0.7
mm, tapering at tip, slightly fused at base, glandular velvet-hairy on
both surfaces. flower pinkish-white, 5-lobed, 1.0-1.2 x 0.7-0.8 cm,
swollen; tube about 8 mm long, glandular velvet-hairy on both surfaces;
lobes ovate, about 3 x 2 mm, blunt at tip; upper lobes 3, white, lower
two lobes pink. Stamens 2; filaments about 2 mm long, velvet-hairy,
winged at
one side; anthers oblong, about 1.5 mm long; connective velvet-hairy.
Disc ca 0.5 x 0.5 mm. Ovary ovoid, about 1.0 x 0.5 mm, glandular
velvet-hairy, 2-locular; ovules 2 in each locule; style about 5 mm
long, glandular velvet-hairy. Capsules obovoid-ellipsoid, 1.0-1.2 cm
long, glandular velvet-hairy. Seeds nearly round, about 2 x 1 mm,
longitudinally grooved. Flowering: January-March.