This is a primarily c asian variant , now adventive elsewhere .

这是主要中亚变型，在别处现在外来。

The process itself is referred to as adventive embryogenesis .

其过程本身称为不定胚胎发生。

European weed having a winged stem and hairy leaves ; adventive in the eastern united states .

有多毛叶子的欧洲杂草，茎上有翼瓣；暂生美国东部。

Yellow-flowered european plant that grows on old walls and in waste places ; an adventive weed in north america .

开黄花的欧洲杂草，长在老墙上和荒地上；是一种出现在北美的外来植物。