genus Hatiora
genus Hazardia
genus Hedeoma
genus Hedera
genus Hedysarum
genus Helenium
genus Heleodytes
genus Heliamphora
genus Helianthemum
genus Helianthus
genus Helichrysum
genus Helicteres
genus Heliobacter
genus Heliophila
genus Heliopsis
genus Heliothis
genus Helipterum
genus Helix
genus Helleborus
genus Helminthostachys
genus Heloderma
genus Helotium
genus Helvella
genus Helwingia
genus Helxine
genus Hemachatus
genus Hemerocallis
genus Hemigalus
genus Hemigrammus
genus Hemipteronatus
genus Hemitripterus
genus Hepatica
genus Heracleum
genus Heritiera
genus Hermannia
genus Hermissenda
genus Hernaria
genus Herpestes
genus Herrerasaurus
genus Hesperiphona
genus Hesperis
genus Heteranthera
genus Heterocephalus
genus Heterodon
genus Heteromeles
genus Heteroscelus
genus Heterotheca
genus Heuchera
genus Hevea
genus Hexagrammos
genus Hexalectris
genus Hexamita
genus Hexanchus
genus Hibbertia
genus Hibiscus
genus Hieracium
genus Himantoglossum
genus Himantopus
genus Hippeastrum
genus Hippobosca
genus Hippocampus
genus Hippocrepis
genus Hippodamia
genus Hippoglossoides
genus Hippoglossus
genus Hippopotamus
genus Hipposideros
genus Hippotragus
genus Hipsurus
genus Hirudo
genus Hirundo
genus Hoheria
genus Holarrhena
genus Holbrookia
genus Holcus
genus Holocentrus
genus Holothuria
genus Homarus
genus Homo
genus Homogyne
genus Homona
genus Hordeum
genus Horneophyton
genus Hosta
genus Hottonia
genus Houttuynia
genus Hovea
genus Hoya
genus Hudsonia
genus Hugueninia
genus Hulsea
genus Humulus
genus Hunnemania
genus Hyacinthoides
genus Hyacinthus
genus Hyaena
genus Hyalophora
genus Hyalosperma
genus Hybanthus
genus Hydnocarpus
genus Hydnum