特徵描述
作者
HSIEH, CHANG-FU, CHAW, SHU-MIAW and WANG, JENN-CHE
型態特徵
Herbs, shrubs, or trees, often with milky juice, sometimes fleshy and cactus-like. Leaves alternate or rarely opposite, simple or variously compound, mostly stipulate. Flowers monoecious or sometimes dioecious, mostly actinomorphic, variously disposed, with or without perianth, sometimes with a corolla; perianth valvate or imbricate; sepals and petals usually distinct; disc often present, annular or of separate glands. Staminate flowers variable, with stamens usually as many or twice as many as the petals or reduced to one, distinct or mona-delphous; anthers mostly 2-celled. Pistillate flowers with or without staminodes, often pedicellate; ovary superior, consisting of 3 or sometimes 2, or more than 3, united, 1-celled or rarely 2-celled carpels; styles 3, distinct or basally connate, each often 2-lobed; stigmas 3 or 6; placentation axile; ovules one or less commonly 2, pendulous. Fruit usually a schizocarpous capsule splitting often elastically into three 1-seeded cocci that dehisce ventrally, sometimes a drupe; seeds often with a conspicuous caruncle; endosperm mostly copious, fleshy; embryo straight.
屬
A very large family containing about 300 genera and 8,000 species, mostly tropical and subtropical; 27 genera in Taiwan.
參考文獻
Bridelia 土密樹屬
作者
HSIEH, CHANG-FU, CHAW, SHU-MIAW and WANG, JENN-CHE
型態特徵
Shrubs or small trees. Leaves alternate, entire. Flowers small, unisexual, in axillary spicate clusters, bracteate, sessile or very shortly pedicellate; calyx 5-cleft, the lobes valvate; petals much smaller; disc broad-pulvinate or adnate to the calyx in the male, conical-truncate, membranaceous and enclosing the ovary in the female; stamens 5, the filaments connate below with a pistillode on the columnar base, free above, spreading; ovary 2-celled; ovules 2 in cell; styles 2, forked. Drupes with 1 or 2 one-seeded cocci.
