download alphabetical list - Royal Botanic Gardens

Hyacinthoides non-scripta subsp. hispanica (Miller) Kerguelen
Hyacinthus 'King of the Blues'
Hyacinthus 'UNKNOWN'
Hyacinthus 'Woodstock'
Hyacinthus orientalis
Hyacinthus orientalis 'Amethyst'
Hyacinthus orientalis 'Pink Pearl?'
Hyacinthus orientalis 'Rosalie?'
Hyacinthus orientalis 'UNKNOWN'
Hydrangea
Hydrangea 'Unknown'
Hydrangea 'Caroline Blue'
Hydrangea 'Red Monte'
Hydrangea 'Rosa Supreme'
Hydrangea 'UNKNOWN'
Hydrangea arborescens
Hydrangea arborescens 'Grandiflora'
Hydrangea arborescens subsp. radiata
Hydrangea aspera subsp. aspera
Hydrangea aspera subsp. robusta
Hydrangea aspera subsp. strigosa
Hydrangea heteromalla
Hydrangea hirta
Hydrangea involucrata 'Hortensis'
Hydrangea macrophylla 'Domotoi'
Hydrangea macrophylla 'Hamburg'
Hydrangea macrophylla 'Maman'
Hydrangea macrophylla 'Marie Claire'
Hydrangea macrophylla 'Pia'
Hydrangea macrophylla 'Rose Supreme'
Hydrangea macrophylla 'UNKNOWN'
Hydrangea macrophylla 'Variegata'
Hydrangea macrophylla (Thunb.) Ser.
Hydrangea macrophylla subsp. serrata
Hydrangea macrophylla var. normalis
Hydrangea paniculata
Hydrangea paniculata 'Grandiflora'
Hydrangea petiolaris
Hydrangea quercifolia W.Bartram
Hydrangea sargentiana
Hydrangea scandens subsp. chinensis f. umbellata
Hydrangea seemanni
Hydrangea serrata 'Bluebird'
Hydrangea serrata 'Preziosa'
Hydrangea serrata var. acuminata