| environ. | 被子植物 | angiosperm The class of seed plants that includes all the flowering plants, characterized by the possession of flowers. The ovules, which become seeds after fertilization, are enclosed in ovaries. The xylem contains true vessels. The angiospermae are divided into two subclasses: Monocotyledoneae and Dycotiledoneae (一种包括所有的有花植物的种子植物纲。胚珠在子房内，受精后成为种子。木质部包含导管。被子植物门分为两个亚纲：单子叶植物纲和双子叶植物纲。) |
