Commemorating John Tradescant (died 1637), gardener to Charles I (Commelinaceae). A genus of 60 species of hardy perennial and greenhouse plants from North America and tropical South America. The hardy varieties are commonly called spiderwort, flower of a day, Moses-in-the-bulrushes, or devil-in-the pulpit. According to some botanists thegarden plants grown under the name Tradescantia virginiana belonging to a hybrid group […]