Lemna minor
Common Duckweed
Lemna trisulca
Ivy-leaved Duckweed
Leontodon hispidus
Rough Hawkbit
Leonurus cardiaca
Motherwort
Lepidium didymum
Lesser Swine-cress
Lepidium draba
Hoary Cress
Lepidium heterophyllum
Smith's Pepperwort
Lepidium latifolium
Dittander
Lepidium ruderale
Narrow-leaved Pepperwort
Leptospermum scoparium
Broom Tea-tree
Leucanthemum vulgare
Oxeye Daisy
Leucojum aestivum
Summer Snowflake
Leycesteria formosa
Himalayan Honeysuckle
Ligustrum vulgare
Wild Privet
Lilium pyrenaicum
Pyrenean Lily
Limbarda crithmoides
Golden-samphire
Limonium binervosum agg.
Rock Sea-lavender (Newborough)
Limosella aquatica
Mudwort
Linaria repens
Pale Toadflax
Linaria supina
Prostrate Toadflax
Linaria vulgaris
Common Toadflax
Linum catharticum
Fairy Flax
Linum usitatissimum
Liparis loeselii
Fen Orchid