Helianthemum nummularium
Common Rock-rose
Helianthemum oelandicum
Hoary Rock-rose
Helianthus annuus
Sunflower
Helichrysum arenarium
Helichrysum italicum
Curry-plant
Helleborus argutifolius
Corsican Hellebore
Helleborus foetidus
Stinking Hellebore
Helleborus kochii
Helleborus (kochii)
Helleborus niger
Christmas-rose
Helleborus orientalis
Lenten-rose
Helleborus viridis
Green Hellebore
Helminthotheca echioides
Bristly Oxtongue
Helosciadium inundatum
Lesser Marshwort
Helosciadium nodiflorum
Fool's-water-cress
Hemerocallis
Daylily
Hepatica nobilis
Liverleaf
Heracleum mantegazzianum
Giant Hogweed
Heracleum sphondylium
Hogweed
Herminium monorchis
Musk Orchid
Hesperis matronalis
Dame's-violet
Hieracium agg
A Hawkweed
Hieracium anglicum agg.
Hawkweed (anglicum agg.)
Hieracium argillaceum
Southern Hawkweed
Hieracium breconicola
Beacon's Hawkweed