3-4 impeller, with opposite leaves in the middle, fine grass, oblong and oval, tail-shaped or sharp at the top, wedge-shaped or blunt at the base, 7-20 cm long and 2.5-4.5 cm wide, bright green leaves, slightly grayish white back and hairless on both sides.
Many flowers are integrated into a terminal cyme, the corolla is saucer-shaped, the corolla tube is cylindrical, the stamens are inserted in the middle of the corolla tube, and the top does not extend out of the corolla throat. Filaments filiform, cylindrical style, about 3 mm long, clavate stigma, 2-lobed tip, and multiple ovules per carpel.
Exocarp dark brown, with longitudinal shallow grooves; The seeds are oblong and flat, about 65438±0cm long and 4 mm wide, with brown cilia at both ends. The flowering period is from April to July, and the fruiting period is from August to 65438+February.
Extended data:
Born in tropical and subtropical mountain evergreen forests or valley tropical rain forests, they often grow in groups, born in sparse forests, like sunshine and warm to high temperature environments, and the wintering shall not be lower than15℃;
Love wet and fear dry, the environmental humidity should be kept above 50%, the root system is developed, and it has certain wind resistance, which is suitable for being born in deep, fertile and loose acid sandy loam; Moderate sulfur dioxide resistance; Leaves fall, but they can keep growing new leaves. ?
Usually there are valleys with an altitude of 500-800 meters on the mountainside, and gentle slopes with static wind and high humidity are often distributed in groups. Produced in Yunnan, China and Hainan, Guangdong, distributed in India, Myanmar and Indonesia. Type specimens were collected from Myanmar.