特徵描述
作者
LIU, Ho-Yih, YANG, T. Y. Aleck, LI, Sung-Po and LI, Hen-Jung
型態特徵
Trees, shrubs, lianas, or herbs. Leaves simple, mostly entire, commonly decussately opposite, often with connate interpetiolar stipules, or sometimes whorled, or rarely stipules intrapetiolar. Inflorescence basically cymose, terminal or lateral, rarely solitary flowers. Flowers mostly complete, rarely unisexual, nearly always epigynous, often heterostyle, zoophilous or rarely anemophilous, actinomorphic or rarely zygomorphic, often tetramerous or pentamerous. Calyx adnate to the ovary, aestivation open, lobes minute or obsolete, sometimes one or more enlarged and colored. Corolla sympetalous, salverform, rotate or funnelform. Stamens as many as and alternate corolla lobes, attached within corolla tube or at mouth; anthers dithecal, opening longitudinally. Ovary nearly always inferior, often bicarpellate; style single, terminal; stigma capitate or lobed. Fruit a capsule, berry, drupe, or schizocarp.
屬
About 630 genera, especially abundant in tropical and subtropical regions; 38 genera in Taiwan.
參考文獻
Diodia 鈕扣草屬
作者
LIU, Ho-Yih, YANG, T. Y. Aleck, LI, Sung-Po and LI, Hen-Jung
型態特徵
Annual or perennial herbs; stems erect or scrambling, sometimes suffrutescent at base. Leaves opposite, penninerved, subsessile or short petiolate; stipules interpetiolar, entire, adnate at base of petioles, forming a sheath. Flowers 1–8 in axillary fascicles, bisexual; calyx tubular-funnelform, deeply divided, lobes 2–6, persistent, at base with bracts divided into lobes; corolla funnelform, white; lobes 4, valvate, hairy on upper inside; stamens 4, inserted in throat, filaments glabrous; ovary 2–4-celled, ovule 1 per cell, style filiform, exserted, stigma broadly 2-lobed; fruit indehiscent, two 1-seeded cocci, with prominent ridges; seeds angular, reticulate.
