特徵描述
作者
LI, HUI-LIN and YANG, KUOH-CHENG
型態特徵
Trees, shrubs or suffrutescent subshrubs. Leaves opposite or rarely alternate, simple, usually deciduous, petioled, estipulate. Flowers small, bisexual or unisexual, actinomorphic, in cymes or panicles or head, sometimes with showy foliaceous bracts. Sepals 4–5, distinct, valvate. Petals 4(–5) distinct mostly valate. Stamens of same number as petals and alternate with them, distinct; anthers 2-celled, basifixed or dorsifixed. Ovary inferior, 2–4- or rarely 1-celled; placentation usually axile; ovule 1 in each cell, pendulous, anatropous; style 1 or several, arising from an epigynous ring or disc, the stigmas as many as styles and subcapitate. Fruit a drupe, sometimes a berry or rarely a syncarp. Seeds with small embryo in copious endosperm.
屬
About 13 genera, widely distributed in the tropical and temperate regions of the world; four in Taiwan.
參考文獻
Aucuba 桃葉珊瑚屬
作者
LI, HUI-LIN and YANG, KUOH-CHENG
型態特徵
Glabrous branching shrubs, evergreen. Leaves opposite, petioled, ovate or lanceolate, obtusely serrate, leathery, shining, turning black in drying. Flowers small, dioecious, pseudo-axillary panicles; pedicels jointed and bracteolate. Staminate flowers: calyx small, 4-toothed; petals ovate or lanceolate, valvate; stamens 4; disc quadrangular, fleshy; no rudiment of an ovary. Pistillate flowers: calyx ovoid, the limb 4-toothed; petals as in the staminate; no rudiments of stamens; ovary 1¬celled; disc fleshy; style short, thick, the stigma capitate; ovule solitary, pendulous. Berry ellipsoid, crowned with the calyx teeth and style; seed oblong; endosperm copious, embryo minute.
