特徵描述
作者
LI, HUI-LIN and HSIEH, CHANG-FU
型態特徵
Deciduous or evergreen shrubs or trees, often with stellate pubescence. Leaves alternate, rarely opposite, simple or palmately lobed, the teeth often glandular; stipules often 1–2, usually persistent, sometimes large, rarely wanting. Flowers bisexual, polygamous or monoecious, regular or irregular, small, perigynous or epigynous. Calyx-tube adnate to the ovary, the lobes 4–5, rarely 6–7, imbricate, rarely valvate. Petals 4–5, or wanting, usually valvate, rarely imbricate or circinate. Stamens 4–5, or sometimes more, perigynous, 1-seriate, the filaments free; anthers 2-celled, the connectives often produced. Ovary inferior, half-inferior, or rarely superior, 2-celled; styles subulate, free, often recurved, usually persistent; ovules 1 or several in each cell, anatropous, pendulous. Fruit a woody, 2-valved, 2-celled capsule; exocarp coriaceous; endocarp horny. Seeds often winged, albuminous, the testa black, horny; embryo erect.
屬
About 23 genera with 150 species, chiefly in subtropical and warm temperate regions of both hemispheres, six genera in Taiwan.
參考文獻
Distylium 蚊母樹屬
作者
LI, HUI-LIN and HSIEH, CHANG-FU
型態特徵
Small trees or shrubs. Leaves alternate, coriaceous, evergreen, entire or dentate, short-petiolate, oblong-lanceolate, penninerved; stipules lanceolate, caducous. Flowers unisexual, polygamous or monoecious, small, apetalous, subtended by small bracts, in small axillary racemes or spikes; calyx free, deeply 3–5-fid, the lobes unequal, imbricate, sometimes wanting; petals none; stamens 1–6, hypogynous, almost spoon-shaped, the filaments short; anthers ellipsoid, the cells dehiscing by a longitudinal slit, the connectives produced at apex; ovary in pistillate flowers superior, lepidote or stellate-tomentose, surrounded by several stamens; styles 2, slender, soon divaricate, more or less hairy, stigmatic on the inside; ovule 1 in each cell, pendulous. Capsules woody, 2-valved at apex; endocarp horny or woody, separating from the exocarp. Seed 1 in each cell, oblong, the testa black, shining.
