Bombax 木棉屬

作者

LI, HUI-LIN

型態特徵

Trees with alternate, stipulate, digitately compound, deciduous leaves. Inflorescence axillary or terminal. Flowers regular, perfect, medium or large. Calyx cup-shaped, truncate or irregularly 3–5-lobed. Petals 5, imbricate. Stamens pentadelphous, opposite the petals, divided above into few or numerous filaments. Ovary 5-celled, superior, free; stigmas 5 or 1 and obscurely 5-lobed; ovules many in each cell. Fruit a loculicidally 5-valved capsule. Seeds with woolly or silky hairs; endosperm scant or absent.

屬

Genera about 20, widely distributed in the tropical regions. Two genera introduced into Taiwan, one of which is naturalized.

參考文獻

LI, HUI-LIN, Flora of Taiwan, second edition 3: 754-755. . (Fl. Taiwan 2nd edit.)

Bombax 木棉屬

作者

LI, HUI-LIN

型態特徵

Large trees with digitate, deciduous leaves. Peduncles axillary or subterminal, solitary or clustered, 1-flowered. Flowers large, red, appearing before the leaves; calyx leathery, cup-shaped, truncate or irregularly lobed; petals obovate; stamens pentadelphous, the bundles opposite the petals, divided above into numrous filaments; anthers reniform, 1-celled, the style clavate; stigmas 5; ovules many in each cell. Capsule loculicidally 5-valved, the valves leathery, woolly within. Seeds woolly.

Species about 50, chiefly in tropical America. The following Indo-Malayan species is naturized in Taiwan.