Goniothalamus macranthus - Large-Flowered Goniothalamus

Large-Flowered Goniothalamus is a shrub or small tree, with branches hairless. Leaves are oblong to elliptic-oblong, wedge-shaped at base, blunt or abruptly tapering at tip, 10-19 x 4-8 cm long, hairless; leaf-stalks 1-1.5 cm long, hairless or finely velvet-hairy on both surfaces when young. Flowers are borne singly, in leaf-axils, drooping; flower-stalks 1-2 cm long, finely velvet-hairy or hairless; bracts few, at the base of flower-stalks, falling off. Sepals are 3, united at base, ovate or triangular, pointed to nearly so, 8-10 x 7-9 mm, brown velvet-hairy at the tip inside. Petals are 6 (3 + 3), greenish white, becoming yellowish; outer petals narrowly linear-lanceshaped or broadly lanceshaped, slightly clawed at base, somewhat pointed at tip, 6-11 x 0.7-1.5 cm, thickly leathery, with a distinct midrib, velvet-hairy on both sides, densely hairy at the base and ridge outside; inner ones clawed, triquetrous, about 2 x 0.4-0.6 cm, brown woolly. Stamens are many, linear, 3.5-4 mm long; connectives apiculate at top, velvet-hairy. Large-Flowered Goniothalamus is endemic to Andaman & Nicobar.