Saururaceae
三白草科
特徵描述
作者
LIU, TANG-SHUI and WANG, HSIEN-CHIH
型態特徵
Aromatic or acrid-scented perennial herbs, often with a subterranean rhizome. Leaves alternate, simple, petiolate. Flowers in terminal or leaf-opposed spikes or racemes, small, bisexual, bracteolate, without perianth; stamens 3, 6 or 8, hypogynous or adnate to ovary and essentially epigynous, anthers basifixed, 2-celled, longitudinally dehiscent; ovary composed of 3 or 4 free or connate carpels, in the latter case the ovary 1-locular with parietal placentation; ovules orthotropous, 2-4 in each free carpel. Fruit a capsule or a semisucculent berry; seeds ovoid or globose, with small embryo and copious mealy endosperm.
屬
Four genera, with five or six species distributed in eastern Asia and North America. Two genera, each with one species, in Taiwan.
參考文獻
Saururus 三白草屬
作者
LIU, TANG-SHUI and WANG, HSIEN-CHIH
型態特徵
Erect perennial herbs. Leaves alternate, ovate-cordate; stipules membranous, adnate to petiole. Spikes terminal, without an involucre of colored bracts; flowers small, naked; stamens 6 or 8, sometimes fewer, filaments free, anthers erect; ovary 3 or 4 free carpels; ovules 2-4 in each carpel. Fruit subglobose, more or less fleshy, splitting into indehiscent 1-seeded mericarps; seeds globose.
A genus with two species, one in North America and one in eastern Asia.
