Leymus arenarius
Lyme-grass
Lilium hansonii
Limbarda crithmoides
Golden-samphire
Limonium binervosum agg.
Rock Sea-lavender (Newborough)
Limosella aquatica
Mudwort
Limosella australis
Welsh Mudwort
Linaria purpurea
Purple Toadflax
Linaria repens
Pale Toadflax
Linum catharticum
Fairy Flax
Linum usitatissimum
Flax
Liparis loeselii
Fen Orchid
Liriodendron tulipifera
Tulip-tree
Lithospermum officinale
Common Gromwell
Littorella uniflora
Shoreweed
Lobelia urens
Heath Lobelia
Lonicera xylosteum
Fly Honeysuckle
Lotus pedunculatus
Greater Bird's-foot-trefoil
Lotus subbiflorus
Hairy Bird's-foot-trefoil
Lotus tenuis
Narrow-leaved Bird's-foot-trefoil
Ludwigia palustris
Hampshire-purslane
Luma apiculata
Chilean Myrtle
Lunaria annua
Honesty
Luzula nivea
Snow-white Wood-rush
Luzula pilosa
Hairy Wood-rush