genus Hynerpeton
— Noun
– English
~ earliest fossil amphibian ever found; of the Devonian; found in Pennsylvania
genus Hyoscyamus
— Noun
– English
~ genus of poisonous herbs: henbane
genus Hypentelium
— Noun
– English
~ a genus of fish in the family Catostomidae
genus Hypericum
— Noun
– English
~ 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