Tapetum (pl. tapeta) A food-rich layer surrounding the spore mother cells in the anthers of vascular plants.

植物花粉囊内包围母细胞的富含营养物质的一层结构。

Ferns were the first terricolous vascular plants, and still comprise an important part of primary productivity of ecosystems.

蕨类植物是最早陆的植物，至今仍然是态系统初级产力的重要组成部分。

The carpel is homologous with the megasporophylls of certain spore-bearing vascular plants (pteridophytes) and the ovuliferous scales of gymnosperms.

心皮和能产的植物（羊齿类）还有具胚珠的裸植物的大叶是同源的。