Designing effective conservation strategies must begin with knowledge of the species we need to protect. So far, taxonomists have described roughly 297,500 plant species.
设计有效的保护策略必须从了解需要保护的物种开始。到目前为止，分类学家大致发现了约297,500种植物。还有多少种仍没有被发现？我们又应该到哪里去发现？