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.
屬
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
Dehaasia 腰果楠屬
作者
LlAO, JIH CHING
型態特徵
Trees. Leaves alternate, usually thick chartaceous, often fascicled on branch tips. Inflorescence loosely flowered panicles, axillary, peduncled; flowers small, bisexual; stamens 9, small, clavate, 2-celled, 1st and 2nd whorles of stamens with anthers introrse, 3rd whorl of anthers extrorse, with 2 large glands on the filaments, 4th whorl staminodia remaining as scars or wanting; ovary sessile. Drupe ellipsoid, black, on an enlarged fleshy reddish peduncle.
