hypericum: large almost cosmopolitan genus of evergreen or deciduous shrubs and herbs with often showy yellow flowers; cosmopolitan except tropical lowlands and Arctic or high altitudes and desert regions
dilleniid dicot genus: genus of more or less advanced dicotyledonous trees and shrubs and herbs
infectious mononucleosis: an acute disease characterized by fever and swollen lymph nodes and an abnormal increase of mononuclear leucocytes or monocytes in the bloodstream; not highly contagious; some believe it can be transmitted by kissing