Gladiolus papilio
Butterfly Sword Lily
Glyceria declinata
Small Sweet-grass
Glyceria fluitans
Floating Sweet-grass
Glyceria sp.
Goodyera repens
Creeping Lady's-tresses
Gymnadenia borealis
Heath Fragrant-orchid
Gymnadenia conopsea
Fragrant Orchid
Gymnadenia densiflora
Marsh Fragrant-orchid
Hammarbya paludosa
Bog Orchid
Hemerocallis
Daylily
Herminium monorchis
Musk Orchid
Himantoglossum hircinum
Lizard Orchid
Hippeastrum
Amaryllis
Holcus lanatus
Yorkshire-fog
Hordeum distichon
Two-rowed Barley
Hordeum murinum
Wall Barley
Hordeum secalinum
Meadow Barley
Hordeum vulgare
Six-rowed Barley
Hyacinthoides hispanica
Spanish Bluebell
Hyacinthoides italica
Italian Bluebell
Hyacinthoides non-scripta
Bluebell
Hyacinthoides x massartiana
Garden Bluebell
Hydrocharis morsus-ranae
Frogbit
Imperata