Hippuris vulgaris
Mare's-tail
Hirudo medicinalis
Hordeum secalinum
Meadow Barley
Hornungia petraea
Hutchinsia
Huperzia selago
Fir Clubmoss
Hyacinthoides hispanica
Spanish Bluebell
Hyacinthoides non-scripta
Bluebell
Hyacinthoides x massartiana
Garden Bluebell
Hydrocotyle vulgaris
Marsh Pennywort
Hygrocybe calyptriformis
Pink Waxcap
Hygrocybe coccinea
Scarlet waxcap
Hygrocybe conica
Blackening Wax Cap
Hygrocybe miniata
Hygrocybe psittacina
Parrot Waxcap
Hygrocybe sp.
Hygrocybe virginea
Snowy Waxcap
Hylotelephium telephium
Orpine
Hymenophyllum tunbrigense
Tunbridge Filmy-fern
Hymenophyllum wilsonii
Wilson's Filmy-fern
Hypericum androsaemum
Tutsan
Hypericum elodes
Marsh St John's-wort
Hypericum hirsutum
Hairy St John's-wort
Hypericum humifusum
Trailing St John's-wort
Hypericum maculatum