| Noun | 1. | genus Magnolia - shrubs or trees of North America or Asia having entire evergreen or deciduous leaves; among most ancient of angiosperm genera magnoliid dicot genus - genus of dicotyledonous flowering plants regarded as among the most primitive of extant angiosperms family Magnoliaceae, magnolia family, Magnoliaceae - subclass Magnoliidae: genera Liriodendron, Magnolia, and Manglietia magnolia - any shrub or tree of the genus Magnolia; valued for their longevity and exquisite fragrant blooms |