Any of numerous flowerless , seedless vascular plants having roots , stems , and fronds and reproducing by spores .

蕨，蕨类植物数量较大的有根、茎以及复叶的无花、无子管状植物，通过孢子再生。

Flowerless vegetable that usually lives in aquatic environments ; it produces oxygen and is at the base of the food chain .

隐花的菜那在水生环境里通常居住;它生产氧气并且在食物链的基地。

Almost all the children selling flowers in every chinese city come from flowerless you county , in south-central china 's hunan province .

而在中国，几乎卖花儿童都是来自湖南省等华南地区。

Used only in former classifications : comprising what is now considered a heterogeneous assemblage of flowerless and seedless organisms : algae ; bacteria ; fungi ; lichens .

仅在旧的分类中使用；包含所有被视为不开花结果的各种微生物的集合；藻类；细菌类；真菌；地衣。