genus Hynerpeton
— Navneord
– Engelsk
~ earliest fossil amphibian ever found; of the Devonian; found in Pennsylvania
genus Hyoscyamus
— Navneord
– Engelsk
~ genus of poisonous herbs: henbane
genus Hypentelium
— Navneord
– Engelsk
~ a genus of fish in the family Catostomidae
genus Hypericum
— Navneord
– Engelsk
~ 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
genus Hypopitys
— Navneord
– Engelsk
~ term used in some classifications for the pinesaps, which are usually included in the genus Monotropa
genus Hypoxis
— Navneord
– Engelsk
~ small plants that resemble amaryllis and that grow from a corm and bear flowers on a leafless stalk; sometimes classified as member of the family Amaryllidaceae: star grass