Hornungia petraea
Hutchinsia
Humulus lupulus
Hop
Huperzia selago
Fir Clubmoss
Hyacinthoides hispanica
Spanish Bluebell
Hyacinthoides non-scripta
Bluebell
Hydrocotyle vulgaris
Marsh Pennywort
Hygrocybe calyptriformis
Pink Waxcap
Hygrocybe coccinea
Scarlet waxcap
Hygrocybe conica
Blackening Wax Cap
Hygrocybe miniata
Hygrocybe psittacina
Parrot Waxcap
Hylotelephium telephium
Orpine
Hymenocallis fragrans
Spider Lily
Hymenophyllum tunbrigense
Tunbridge Filmy-fern
Hymenophyllum wilsonii
Wilson's Filmy-fern
Hypericum androsaemum
Tutsan
Hypericum calycinum
Rose-of-Sharon
Hypericum elodes
Marsh St John's-wort
Hypericum hirsutum
Hairy St John's-wort
Hypericum humifusum
Trailing St John's-wort
Hypericum perforatum
Perforate St John's-wort
Hypholoma fasciculare
Sulphur Tuft
Hypochaeris radicata
Cat's-ear
Hypopitys monotropa
Yellow Bird's-nest