Geranium sylvaticum
Wood Crane's-bill
Geum rivale
Water Avens
Geum x intermedium
Hybrid Avens
Glechoma hederacea
Ground-ivy
Glyceria declinata
Small Sweet-grass
Glyceria fluitans
Floating Sweet-grass
Gnaphalium uliginosum
Marsh Cudweed
Guizotia abyssinica
Niger
Gymnadenia borealis
Heath Fragrant-orchid
Gymnadenia conopsea
Fragrant Orchid
Gymnocarpium dryopteris
Oak Fern
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