Lamium album
White Dead-nettle
Lamium purpureum
Red Dead-nettle
Laportea interuppta
Hen's Nettle
Lapsana communis
Nipplewort
Larix
Bonsai Larch
Larix decidua
European Larch
Lathraea clandestina
Purple Toothwort
Lathraea squamaria
Toothwort
Lathyrus aphaca
Yellow Vetchling
Lathyrus japonicus
Sea Pea
Lathyrus laevigatus
Yellow Gess
Lathyrus linifolius
Bitter-vetch
Lathyrus nissolia
Grass Vetchling
Lathyrus odoratus
Sweet Pea
Lathyrus oleraceus
Garden Pea
Lathyrus pratensis
Meadow Vetchling
Lathyrus sylvestris
Narrow-leaved Everlasting-pea
Lathyrus vernus
Spring Pea
Lavandula angustifolia
Garden Lavender
Ledebouria socialis
Silver Squill
Lemna minor
Common Duckweed
Lemna minuta
Least Duckweed
Lemna trisulca
Ivy-leaved Duckweed
Lemna turionifera
Turion Duckweed
Lemna valdiviana
Leontodon hispidus
Rough Hawkbit
Leontodon saxatilis
Lesser 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
Lepidium sativum
Garden Cress
Leptospermum scoparium
Broom Tea-tree
Leucadendron salignum
Common#Sunshine Conebush
Leucanthemum vulgare
Oxeye Daisy
Leucojum aestivum
Summer Snowflake
Leucojum vernum
Spring Snowflake
Leycesteria formosa
Himalayan Honeysuckle
Leymus arenarius
Lyme-grass
Licuala grandis
Ruffled Fan Palm
Licuala peltata
Fan Palm
Ligustrum vulgare
Wild Privet
Lilium bulbiferum
Orange-lily
Lilium hansonii
Lilium pyrenaicum
Pyrenean Lily
Limbarda crithmoides
Golden-samphire
Limonium binervosum agg.
Rock Sea-lavender (Newborough)
Limonium vulgare
Common Sea-lavender
Limosella aquatica
Mudwort
Limosella australis
Welsh Mudwort
Linaria alpina
Alpine Toadflax
Linaria arenaria
Sand Toadflax
Linaria purpurea
Purple Toadflax
Linaria repens
Pale Toadflax
Linaria supina
Prostrate Toadflax
Linaria vulgaris
Common Toadflax
Linaria x dominii
Linum catharticum
Fairy Flax
Linum usitatissimum
Liparis loeselii
Fen Orchid
Liriodendron tulipifera
Tulip-tree
Lithodora diffusa
Purple Gromwell 'Heavenly Blue'
Lithospermum officinale
Common Gromwell
Littorella uniflora
Shoreweed
Livistona chinensis
Chinese Fan Palm
Lobaria pulmonaria
Oak Lungwort
Lobelia dortmanna
Water Lobelia
Lobelia nummularia
Common Pratia