• iflora 中国高等植物资源和DNA条形码物种鉴定数据库公共服务平台

墙草属

墙草属

Parietaria

中文名

墙草属

拉丁学名

Parietaria Linnaeus

概述

24. Parietaria Linnaeus, Sp. Pl. 2: 1052. 1753. 墙草属 qiang cao shu Chen Jiarui (陈家瑞 Chen Chia-jui); Ib Friis, C. Melanie Wilmot-Dear Freirea Gaudichaud-Beaupré.Herbs, annual or perennial, without stinging hairs. Leaves alternate; stipules absent; leaf blade 3-veined or triplinerved, margin entire; cystoliths punctiform. Inflorescences axillary, clusters or cymes of unisexual or bisexual flowers (plants monoecious); bracts calyxlike. Bisexual flowers: perianth lobes 3 or 4, linear, valvate. Male flowers: perianth lobes 3 or 4; rudimentary ovary minute. Female flowers: perianth lobes 3 or 4, connate to a tube at base, much shorter than male lobes. staminodes absent. Ovary straight, free from perianth; style short or absent; stigma penicillate or spatulate; deciduous, ovule orthotropous. Achene ovoid, slightly compressed, with lustrous and crustaceous pericarp, enclosed by dry persistent perianth. Seeds with endosperm; cotyledons oblong-ovate.About 20 species: temperate and subtropical regions; one species in China. 【引自:Flora of China】
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