Noun | 1. | ![]() dicot genus, magnoliopsid genus - genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination Apocynaceae, dogbane family, family Apocynaceae - chiefly tropical trees or shrubs or herbs having milky juice and often showy flowers; many are sources of drugs Cape periwinkle, Catharanthus roseus, cayenne jasmine, Madagascar periwinkle, red periwinkle, rose periwinkle, Vinca rosea, periwinkle, old maid - commonly cultivated Old World woody herb having large pinkish to red flowers |