特徵描述
作者
CHANG, CHING-EN
型態特徵
Trees or shrubs. Leaves alternate, estipulate, mostly pinnate, usually not glandular punctate; leaflets opposite or alternate, usually quite entire and more or less oblique at base. Flowers usually unisexual (plant dioecious), rarely hermaphroditic, usually in axillary cymose panicles; calyx 3–6-lobed, or with free sepals, usually imbricate in bud; corolla contorted or imbricate, the petals 4–5 (rare 3 or 6 or more), distinct or connate, or adnate to the staminal tube and then valvate; stamens 5–10, hypogynous, mostly monadelphous by the connate filaments (distinct in Cedrela and Toona), the anthers erect, usually sessile on the tube, included or exserted, 2-celled, longitudinally dehiscing; hypogynous disc tubular, annular or obsolate, free or connate with the ovary, ovary usually free, 2–5 celled, the style single, the stigma disciform or capitate; ovules 1–2 in each cell or more, collateral or superposed. Fruit a berry, capsule, or rarely a drupe. Seeds often winged, endosperm fleshy or none.
屬
About 50 genera and 800 species, mostly tropical, widely spread over both hemispheres.
參考文獻
Aphanamixis 山楝屬
作者
CHANG, CHING-EN
型態特徵
Small trees or shrubs. Leaves pinnate; leaflets oblique; flowers unisexual or bisexual, inflorescence axillary or supra-axillary, the male flowers in large panicles with spicate branches, the female and hermaphrodite ones in long spikes or rarely in large panicles with spicate branches; male flowers smaller than female and hermaphrodite; calyx deeply 5-lobed; lobes imbricate; petals 3, free, fused in the lower half to the staminal tube, imbricate; staminal tube globose or deeply cyathiform, the margin entire or slightly crenate; anthers 3–8, inserted within the throat, completely included or partly exserted; disc absent; ovary 3(4)-celled, with 1–2 ovules in each cell; style very short and broad, terminated by a large, conical, 3-angled stigma, or style longer, stout, and then terminated by a truncate stigma, the margin ribbed with the impression of surrounding anthers; pistillode with rudimentary ovules present or absent. Fruit a 2 or 3-valved loculicidal capsule.
