Wordnet 3.0
NOUN (1)
1. 
 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; 
[syn: Hypericum, genus Hypericum]
WordNet (r) 3.0 (2006):
genus Hypericum
    n 1: 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 [syn: Hypericum, genus
         Hypericum]