genus Hylocereus
— Navneord
– Engelsk
~ genus of climbing or epiphytic tropical American cacti with angular stems and mostly white very fragrant flowers
genus Hylocichla
— Navneord
– Engelsk
~ American thrush: wood thrush; hermit thrush; veery
genus Hylophylax
— Navneord
– Engelsk
~ a genus of Formicariidae
genus Hymenaea
— Navneord
– Engelsk
~ genus of tropical American timber trees
genus Hymenanthera
— Navneord
– Engelsk
~ a genus of slender evergreen shrubs; grow in Australia and New Zealand
genus Hymenophyllum
— Navneord
– Engelsk
~ type genus of the Hymenophyllaceae: filmy ferns
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