Lathraea squamaria
Toothwort
Lathyrus japonicus
Sea Pea
Lathyrus linifolius
Bitter-vetch
Lathyrus nissolia
Grass Vetchling
Lathyrus pratensis
Meadow Vetchling
Lathyrus sylvestris
Narrow-leaved Everlasting-pea
Leontodon hispidus
Rough Hawkbit
Leontodon saxatilis
Lesser Hawkbit
Lepidium heterophyllum
Smith's Pepperwort
Lepidium latifolium
Dittander
Leucanthemum vulgare
Oxeye Daisy
Leucojum aestivum
Summer Snowflake
Leymus arenarius
Lyme-grass
Ligustrum vulgare
Wild Privet
Limbarda crithmoides
Golden-samphire
Limonium binervosum agg.
Rock Sea-lavender (Tywyn Trewan)
Limonium vulgare
Common Sea-lavender
Limosella aquatica
Mudwort
Limosella australis
Welsh Mudwort
Linaria vulgaris
Common Toadflax
Linum catharticum
Fairy Flax
Linum perenne
Perennial Flax
Liparis loeselii
Fen Orchid
Lithospermum officinale
Common Gromwell