Hamamelidaceae
金縷梅科
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
Corylopsis 蠟瓣花屬
作者
LI, HUI-LIN and HSIEH, CHANG-FU
型態特徵
Deciduous shrubs, rarely small trees. Leaves alternate, slender-petiolate, ovate or oblong, serrate, stipulate; stipules large, caducous. Flowers bisexual, yellow, sessile or nearly so, in nodding axillary racemes, appearing before the leaves, each flower with a sheathing bract at the base; calyx-tube adnate to the ovary, the lobes 5, short, valvate; petals 5, perigynous, ovate-spathulate, clawed; stamens 5, perigynous, alternating with short, entire or 2–3-parted scale-like staminodes; filaments subulate; anthers basifixed, the cells separated by a broad connective, dehiscing longitudinally; ovary half-inferior, 2-celled; styles 2, distinct, slender, divaricate, the stigmas short; ovules solitary in each cell, pendulous. Capsule woody, broadly obovoid, with 2 spreading and recurved beaks, 4-valved; endocarp horny, separating from the exocarp. Seeds 2, oblong, the testa black, shining.
About 30 species in the eastern Himalayas and S. China. Two species in Taiwan.
