Allamanda cathartica L.

Lianas, sometimes shrubs to ca. 2 m, glabrous or the younger stems ? pubes-cent. Leaves quaternate, rarely opposite or alternate above, mostly obovate, some-times elliptic, shortly acuminate, obtuse to attenuate basally, to 16 cm long and 6 cm wide, subcoriaceous, glabrous, or pubescent on the veins beneath, the sec-ondary veins anastomosing and forming a marginal vein; subsessile to petioles 2-3 mm long. Inflorescences cymose, few-flowered, the peduncles ca. 1-4 cm long. Flowers with the pedicels ca. 2-7 mm long; bracteoles minute; calyx-lobes subequal, ovate to narrowly ovate, 5-12 mm long and 3-7 mm wide; corolla yel-low, the tube proper ca. 20-35 mm long, pubescent at the level of stamen attachment, the throat broadly conic, ca. 20-35(-40) mm long, the lobes sub-equal, obliquely ovate, ca. 25-35 mm long and 30-45(-55) mm wide, spread-ing; stamens attached at the top of the tube proper, the anthers ca. 4 mm long; nectary shallow and annular. Capsule subglobose, ca. 2-3 cm in diameter, spinu-lose, the spines ca. 0.5-1 cm long; seeds 13-15 mm long.

Riverbanks in rain forests. It can rapidly invade abandoned farm land, waste land etc.

Can be grown by cuttings or seedlings.