特徵描述
作者
LU, SHENG-YOU and YANG, YUEN-PO
型態特徵
Trees or shrubs, erect or scandent; stems glabrous or sometimes thorny. Leaves opposite or alternate, simple, membranous or chartaceous, penninerved, usually crenate, rarely entire; sti¬pules minute, simple, caducous, or none. Inflorescence axillary and/or terminal, racemose, cymose, thyrsoid, paniculate, fascicu¬late, or rarely a solitary flower, usually bracteate. Flowers mostly perfect, actinomorphic, usually greenish; sepals 4–5, free or united at the base; petals 4–5, free, inserted below a disc; stamens mostly 4–5, aletrnate with the petals, free, situated on or the edge of or beneath the disc, the anthers mostly 2 celled, usually longitudinally or laterally dehiscent; ovary 2–5 locular, entirely or partly surrounded by the disc, usually glabrous, sometimes pubescent, usually 2–5 celled; style short, or obscure, or lacking, the stigma capitate or lobed; ovules 1–2 or rarely more in each locule. Fruit a dehiscent capsule, rarely a berry or a samara; seeds erect or pendulous, usually arillate, the embryo with large foliaceous cotyledons.
屬
About 94 genera with about 1,300 species in the tropical and temperate regions, six genera in Taiwan.
參考文獻
Perrottetia 核子木屬
作者
LU, SHENG-YOU and YANG, YUEN-PO
型態特徵
Deciduous trees or shrubs. Leaves alternate, petiolate, ovate, serrate; stipules deciduous. Inflorescence axillary, cymose. Flowers monoecious; calyx 4 lobed, the lobes erect, remotely apart, lanceolate; petals 4, erect, valvate or the margins imbricate, lanceolate to deltoid; stamens 4, inserted on the margins of the disc, the filaments filiform; disc in male flowers flat, cupular, in female flowers annular; ovary ovoid, slightly confluent with the disc, 4 celled, the ovule 1 in each locule, the style short or elongate, the stigma 2 lobed. Fruit a berry, but not fleshy, 4 lobed; seeds 4.
