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
Morinda 羊角藤屬
作者
YANG, T.Y.Aleck
型態特徵
Erect climbing shrubs or trees; branchlets glabrous or pubescent. Leaves opposite, stipules usually membranaceous, connate or sheathing within the petioles. Flowers bisexual or polygamo-dioecious, umbellately arranged in head-like clusters or solitary, long peduncle, terminal or axillary; bisexual flowers dimorphic with heterostyles; calyx truncate; corolla tube short or long, lobes 4–7, valvate in bud, throat hairy; stamens 4–7, exserted or included, filaments short, anthers linear or oblong; style exserted or included, stigma 2-lobed; ovary 2–4-celled; ovules solitary in each cell. Fruit compound, formed of the succulent enlarged calyses enclosing many cartilaginous or bony l-seeded pyrenes, rarely single; seeds obovoid or reniform.
