por.tu.lac.a
n.（名词）Any of various fleshy plants of the genusPortulaca, especially P. grandiflora of South America, cultivated for its showy, colorful flowers that open only in sunlight. Also called rose moss 半枝莲：任一种马齿苋属 的肉质植物，尤指南美的 大花马齿苋 ，因其绚丽多彩的花朵而种植，花朵只在阳光下开放 也作 rose moss
来源：Middle English 中古英语 from Latin portul3ca [purslane] 源自 拉丁语 portul3ca [马齿苋属植物] from portula [diminutive of] porta [gate (from the gatelike covering of the seed capsule)] * see per- 2源自 portula [] porta的小后缀 [大门（因其蒴夹的外皮与大门相似而得名）] *参见 per- 2
