特徵描述
作者
YANG Yuen-Po , LU Sheng-You and CHEN Tien-Tsai
型態特徵
Shrubs or trees, rarely herbs. Leaves opposite or rarely verticillate, simple or compound, estipulate. Inflorescence terminal or axillary, cymes, racemes, spikes or thyrses, sometimes capitate. Flowers bisexual or polygamous, zygomorphic or sometimes actinomorphic. Calyx gamosepalous, persistent, 4 or 5-lobed. Corolla gamopetalous, 4 or 5-lobed, lobes equal to subequal sometimes with a conspicuous lip. Stamens 4, didynamous and unequal or equal, alternate corolla lobes. Ovary superior, 2–8-locular, ovules 1 or 2 per locule, entire or 4-lobed, style terminal, stigma simple or bifid. Fruit a drupe or capsule, sometimes breaking up into nutlets. Seeds 1–4, usually without endosperm.
屬
About 90 genera and 2,000 species, chiefly in tropical and subtropical; about 10 genera in Taiwan, three of the genera introduced and naturalized.
參考文獻
Phyla 鴨舌癀屬
作者
YANG Yuen-Po , LU Sheng-You and CHEN Tien-Tsai
型態特徵
Mostly perennial herbs, procumbent or creeping, often rooting at nodes, densely appressed medifixed hairy. Leaves usually toothed. Inflorescence spicate, axillary, densely flowered, pedunculate. Flowers sessile, in axil of bracteole; calyx membranaceous, deeply bipartite, laterally compressed; corolla tube slender, straight or incurved, lobes 4 or 5, 2-lipped, spreading, rounded or emarginate; stamens 4, didynamous, included or slightly exserted; ovary 2-locular, ovule 1 per locule, style short, thick. Fruit dry, enclosed by persistent calyx, dividing into 2 pyrenes, pericarp leathery.
