Gymnocarpium dryopteris
Oak Fern
Gymnocarpium robertianum
Limestone Fern
Hammarbya paludosa
Bog Orchid
Hedera hibernica
Atlantic Ivy
Helianthemum nummularium
Common Rock-rose
Helianthemum oelandicum
Hoary Rock-rose
Helichrysum italicum
Curry-plant
Helleborus argutifolius
Corsican Hellebore
Helleborus foetidus
Stinking Hellebore
Helleborus viridis
Green Hellebore
Helminthotheca echioides
Bristly Oxtongue
Helosciadium inundatum
Lesser Marshwort
Helosciadium nodiflorum
Fool's-water-cress
Hepatica nobilis
Liverleaf
Heracleum mantegazzianum
Giant Hogweed
Heracleum sphondylium
Hogweed
Hesperis matronalis
Dame's-violet
Hieracium anglicum agg.
Hawkweed (anglicum agg.)
Hieracium argillaceum
Southern Hawkweed
Hieracium cillense
Craig y Cilau Hawkweed
Hieracium daedalolepioides
Petite-leaved Hawkweed
Hieracium lanatum
Hieracium maculatum
Spotted Hawkweed
Hieracium repandulare