Geranium purpureum
Little-Robin
Geranium pusillum
Small-flowered Crane's-bill
Geranium pyrenaicum
Hedgerow Crane's-bill
Geranium robertianum
Herb-Robert
Geranium sanguineum
Bloody Crane's-bill
Geranium subcaulescens
Geranium 'Guiseppii'
Geranium sylvaticum
Wood Crane's-bill
Geranium versicolor
Pencilled Crane's-bill
Geranium x oxonianum
Druce's Crane's-bill
Gerbera jamesonii
Barberton Daisy
Geum rivale
Water Avens
Geum urbanum
Wood Avens
Geum x intermedium
Hybrid Avens
Ginkgo biloba
Maidenhair-tree
Gladiolus dalenii
Dalen's Gladiolus
Gladiolus illyricus
Wild Gladiolus
Gladiolus papilio
Butterfly Sword Lily
Glaucium flavum
Yellow Horned-poppy
Glebionis segetum
Corn Marigold
Glechoma hederacea
Ground-ivy
Gliricidia sepium
Madre de Cacao
Glochidion rubrum
Red-berried Pin-flower Tree
Glycosmis parviflora
Jamaican Mandarin-orange
Glycyrrhiza glabra
Liquorice
Gmelina arborea
Beechwood
Gnaphalium uliginosum
Marsh Cudweed
Goeppertia louisae
Goeppertia majestica
Majestic Prayer Plant
Gomphocarpus physocarpus
Balloon Plant
Gomphrena celosiodes
Gomphrena Weed
Gomphrena globosa
Globe Amaranth
Gomphrena serrata
Prostrate Globe Amaranth
Goodyera repens
Creeping Lady's-tresses
Graptophyllum pictum
Caricature-plant
Griselinia littoralis
New Zealand Broadleaf
Grona triflora
Creeping Tick Trefoil
Guizotia abyssinica
Niger
Gunnera tinctoria
Giant-rhubarb
Gymnadenia borealis
Heath Fragrant-orchid
Gymnadenia conopsea
Fragrant Orchid
Gymnadenia conopsea agg
Chalk Fragrant Orchid
Gymnadenia densiflora
Marsh Fragrant-orchid
Hamamelis spp.
Witch-hazel
Hamelia patens
Firebush
Hammarbya paludosa
Bog Orchid
Hedera helix sens lat
Ivy
Hedera hibernica
Atlantic Ivy
Helianthemum apenninum
White Rock-rose
Helianthemum nummularium
Common Rock-rose
Helianthemum oelandicum
Hoary Rock-rose
Helianthus annuus
Sunflower
Helichrysum arenarium
Helichrysum italicum
Curry-plant
Heliconia monteverdensis
Lobster-claws
Heliconia psittacorum
Parrot's Beak
Heliconia rostrata
Hanging Lobster Claw
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