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
Maytenus 美登木屬
作者
LU, SHENG-YOU and YANG, YUEN-PO
型態特徵
Shrubs or small trees, usually spined; spines terminating a short shoot and/or in the axil. Leaves alternate or rarely opposite, obovate, coriaceous, entire or serrate, estipulate. Inflorescence cymose, axillary, solitary or fasciculate, pedunculate. Flowers perfect, sometimes unisexual; calyx 5 lobed; petals 5, patent; stamens 5, inserted on the margin of or below the disc, the anthers introrse; ovary base broad, confluent with the disc, 3–4 celled, the style short, the stigma 2–4; ovules 2 in each cell. Capsule obovoid or nearly globose. Seeds 1–2 in each cell, ellipsoid, arillate; endosperm abundant.
