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Euphorbiaceae

大戟科

特徵描述
屬列表
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特徵描述

作者

HSIEH, CHANG-FU, CHAW, SHU-MIAW and WANG, JENN-CHE

型態特徵

Herbs, shrubs, or trees, often with milky juice, sometimes fleshy and cactus-like. Leaves alternate or rarely opposite, simple or variously compound, mostly stipulate. Flowers monoecious or sometimes dioecious, mostly actinomorphic, variously disposed, with or without perianth, sometimes with a corolla; perianth valvate or imbricate; sepals and petals usually distinct; disc often present, annular or of separate glands. Staminate flowers variable, with stamens usually as many or twice as many as the petals or reduced to one, distinct or mona-delphous; anthers mostly 2-celled. Pistillate flowers with or without staminodes, often pedicellate; ovary superior, consisting of 3 or sometimes 2, or more than 3, united, 1-celled or rarely 2-celled carpels; styles 3, distinct or basally connate, each often 2-lobed; stigmas 3 or 6; placentation axile; ovules one or less commonly 2, pendulous. Fruit usually a schizocarpous capsule splitting often elastically into three 1-seeded cocci that dehisce ventrally, sometimes a drupe; seeds often with a conspicuous caruncle; endosperm mostly copious, fleshy; embryo straight.

A very large family containing about 300 genera and 8,000 species, mostly tropical and subtropical; 27 genera in Taiwan.

參考文獻

Macaranga 血桐屬

作者

HSIEH, CHANG-FU, CHAW, SHU-MIAW and WANG, JENN-CHE

型態特徵

Small trees or shrubs. Leaves alternate, usually large and often peltate, entire or lobed. Flowers in axillary racemes or branched panicles, apetalous. Male flowers many, in clusters, minute; calyx globose or obovoid, the lobes 3–4, valvate; stamens few, 1 or more, the filaments flexuous, the anthers 3–4-celled, the cells bivalved; pistillodes 0. Female flowers one or few in a large or small often toothed bract; calyx 2–4-lobed or toothed; ovary 1–6-celled, the cells 1-ovuled; styles entire. Capsules small, of 1–5 bivalved cocci, naked or spiny, usually glandular or viscid-waxy; seeds globose.

參考文獻

標本列表

學名 中名 標本數