Spermatophyte plants that have unenclosed, "naked seeds": The fifth extant division is the flowering plants, also known as angiosperms or magnoliophytes, the largest and most diverse group of spermatophytes. Angiosperms possess seeds enclosed in a fruit, unlike gymnosperms. In addition to the taxa listed above, the fossil record contains evidence of many extinct taxa of seed plants. The so-called "seed ferns" (Pteridospermae) were one of the earliest successful groups of land plants, and forests dominated by seed ferns were prevalent in the late Paleozoic. "Glossopteris" was the most prominent tree genus in the ancient southern supercontinent of Gondwana during the Permian
Native Seeds/SEARCH grant to pursue his studies of the agronomic characteristics and health value of desert food plants, including in relation to controlling diabetes among Indians and Hispanic Americans. As of 2016, the Native Seeds/SEARCH seed bank contained seeds from over 1800 plant varieties. In addition to a seed bank, Native Seeds/SEARCH opened a conservation farm in 1997. Seeds are distributed by mail order and a retail store in Tucson. Since 2001, Native Seeds/SEARCH has operated Southwest Regis-Tree to conserve Native Southwestern perennial species. Native Seeds/SEARCH Native Seeds/SEARCH, founded in 1983, is a nonprofit conservation organization located in Tucson, Arizona in the