any plant from a large group of plants that produce seeds. They include angiosperms (= plants that produce flowers and seeds) and gymnosperms (= plants that produce seeds but no flowers).

The spermatophytes, which means "seed plants", are some of the most important organisms on Earth. 种子植物是地球上最重要的生物之一。

The most successful and advanced group of land plants are the spermatophytes.