Gymnocarpium robertianum
Limestone Fern
Hedera helix sens lat
Ivy
Hedera hibernica
Atlantic Ivy
Helianthemum nummularium
Common Rock-rose
Helleborus foetidus
Stinking Hellebore
Helleborus viridis
Green Hellebore
Helminthotheca echioides
Bristly Oxtongue
Helosciadium inundatum
Lesser Marshwort
Helosciadium nodiflorum
Fool's-water-cress
Heracleum mantegazzianum
Giant Hogweed
Heracleum sphondylium
Hogweed
Hesperis matronalis
Dame's-violet
Hieracium agg
A Hawkweed
Hieracium argillaceum
Southern Hawkweed
Hieracium breconicola
Beacon's Hawkweed
Hieracium cillense
Craig y Cilau Hawkweed
Hieracium daedalolepioides
Petite-leaved Hawkweed
Hieracium inspissatum
Crass-leaved Hawkweed
Hieracium repandulare
Hieracium sect. Hieracioides
Hieracium sect. Oreadea
Hieracium sect. Sabauda
Hieracium spp
Hieracium subbritannicum