Euphorbia characias
Mediterranean Spurge
Euphorbia exigua
Dwarf Spurge
Euphorbia hyberna
Irish Spurge
Euphorbia lathyris
Caper Spurge
Euphorbia paralias
Sea Spurge
Euphorbia peplus
Petty Spurge
Euphorbia portlandica
Portland Spurge
Euphorbia x pseudovirgata
Twiggy Spurge
Fagus sylvatica
Beech
Ficaria verna
Lesser Celandine
Filipendula ulmaria
Meadowsweet
Forsythia x intermedia
Forsythia
Gagea bohemica
Early Star-of-Bethlehem
Gagea lutea
Yellow Star-of-Bethlehem
Galatella linosyris
Goldilocks Aster
Galeopsis tetrahit sens str
Common Hemp-nettle
Galium verum
Lady's Bedstraw
Genista anglica
Petty Whin
Genista pilosa
Hairy Greenweed
Genista tinctoria
Dyer's Greenweed
Geum rivale
Water Avens
Geum x intermedium
Hybrid Avens
Glaucium flavum
Yellow Horned-poppy
Glebionis segetum
Corn Marigold
Guizotia abyssinica
Niger
Hamamelis spp.
Witch-hazel
Hammarbya paludosa
Bog Orchid
Helianthemum nummularium
Common Rock-rose
Helianthemum oelandicum
Hoary Rock-rose
Helianthus annuus
Sunflower
Helichrysum italicum
Curry-plant
Heliconia psittacorum
Parrot's Beak
Helminthotheca echioides
Bristly Oxtongue
Hieracium cillense
Craig y Cilau Hawkweed
Hieracium daedalolepioides
Petite-leaved Hawkweed
Hieracium discophyllum
Disc-leaved Hawkweed
Hieracium lanatum
Hieracium sect. Hieracioides
Hieracium sect. Oreadea
Hieracium sect. Sabauda
Hieracium sect. Stelligera
Hawkweed (Stelligera)
Hieracium spp
Hieracium subbritannicum
Hippocrepis comosa
Horseshoe Vetch
Hirschfeldia incana
Hoary Mustard
Hypericum
Hypericum androsaemum
Tutsan
Hypericum calycinum
Rose-of-Sharon
Hypericum elodes
Marsh St John's-wort
Hypericum forrestii
Forrest's Tutsan
Hypericum hirsutum
Hairy St John's-wort
Hypericum humifusum
Trailing St John's-wort
Hypericum maculatum
Imperforate St John's-wort
Hypericum perforatum
Perforate St John's-wort
Hypericum pulchrum
Slender St John's-wort
Hypericum tetrapterum
Square-stalked St John's-wort
Hypericum x caesariense
Hypericum x desetangsii
Des Etangs' St John's-wort
Hypochaeris maculata
Spotted Cat's-ear
Hypochaeris radicata
Cat's-ear
Hypopitys monotropa
Yellow Bird's-nest
Impatiens noli-tangere
Touch-me-not Balsam
Inula conyzae
Ploughman's-spikenard
Inula helenium
Elecampane
Iris pseudacorus
Yellow Iris
Isatis tinctoria
Woad
Jacobaea aquatica
Marsh Ragwort
Jacobaea vulgaris
Common Ragwort
Jasminum nudiflorum
Winter Jasmine
Juncus compressus
Round-fruited Rush