Heliotropium indicum
Indian Heliotrope
Helleborus argutifolius
Corsican Hellebore
Helleborus foetidus
Stinking Hellebore
Helleborus kochii
Helleborus (kochii)
Helleborus niger
Christmas-rose
Helleborus orientalis
Lenten-rose
Helleborus viridis
Green Hellebore
Hellenia speciosa
Crêpe Ginger
Helminthotheca echioides
Bristly Oxtongue
Helosciadium inundatum
Lesser Marshwort
Helosciadium nodiflorum
Fool's-water-cress
Hemerocallis
Daylily
Hepatica nobilis
Liverleaf
Heptapleurum arboricola
Dwarf Umbrella Tree
Heracleum mantegazzianum
Giant Hogweed
Heracleum sphondylium
Hogweed
Herminium monorchis
Musk Orchid
Hesperis matronalis
Dame's-violet
Hevea brasiliensis
Pará Rubber Tree
Hibiscus tiliaceus
Sea Hibiscus
Hieracium agg
A Hawkweed
Hieracium anglicum agg.
Hawkweed (anglicum agg.)
Hieracium argillaceum
Southern Hawkweed
Hieracium breconicola
Beacon's Hawkweed