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Lauraceae

樟科

特徵描述
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特徵描述

作者

LlAO, JIH CHING

型態特徵

Evergreen rarely deciduous trees, shrubs or vines, often aromatic. Leaves alternate, rarely opposite, simple, usually coriaceous, sometimes membranaceous, punctate, exstipulate. Inflorescences various, such as umbels, racemes, panicles or cymose-panicles; flowers actinomorphic, bisexual or unisexual, yellow or greenish; calyx usually 6-parted, the segments in 2 whorls; petals 0; stamens in 3-4, rarely more, whorls of 3, some often reduced to staminodia, perigynous or epigynous, anthers 2- or 4-celled, rarely 3-celled, opening by uplifting valves; ovary usually superior and free, rarely inferior, 1-celled, 1-ovuled, style filiform. Fruits berries or drupes, indhiscent; seed 1.

Widely distributed in the tropics, especially in S. E. Asia and Brazil, and a smaller number in temperate regions. About 45 genera and 2,250 species; about 20 genera, 423 species, 43 varieties and 5 forms in mainland China; 13 genera, 60 species, 12 varieties and 2 forms in Taiwan (including 9 species and 1 variety introduced); a few genera are cultivated as ornamentals and for food. The avocado, cinnamon and camphor are articles of commerce.

參考文獻

Neolitsea 新木薑子屬

作者

LlAO, JIH CHING

型態特徵

Dioecious, small evergreen trees or shrubs. Leaves alternate or whorled, rarely opposite, with 3 main veins, usually glaucous beneath. Flowers mostly dimerous. Inflorescences umbels; involucral bracts large, persistent, decussate; pedicels none; staminate flowers with 6 stamens in 3 whorls, anthers 4-celled, introrse; pistillate staminodes in 3 whorls, inner whorl with glands; stigma in pistillate flowers conspicuous, capitate and flimsy, 2-lobed. Fruit ellipsoid or rarely globose; stalk often slightly thickened.

參考文獻

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