Cactaceae

Haagea
Haageocactus
Haageocereus
Haagespostoa
Hamatocactus
Hariota
Harricereus
Harrisia
Harrisinopsis
Haseltonia
Hatiora
Heliabravoa
Helianthocereus
Heliaporus
Heliocactus
Heliocereopsis
Heliocereus
Heliochia
Helioselenius
Heliosocereus
Heliphyllum
Heptocereus
Hertrichocereus
Hickenia
Hildewintera
Hildmannia
Homalocephala
Horridocactus
Hylocereus
Hylophyllum
Hymenorebutia