The flowering plants, also known as Angiospermae (/ˌændʒioʊˈspɜːrmiː/), or Magnoliophyta (/mæɡˌnoʊliˈɒfɪtə, -oʊfaɪtə/), are the most diverse group of land plants, with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. Etymolog