Hymenocallis fragrans
Spider Lily
Iberis amara
Wild Candytuft
Ilex aquifolium
Holly
Illecebrum verticillatum
Coral-necklace
Impatiens glandulifera
Indian Balsam
Koenigia polystachya
Himalayan Knotweed
Lathraea squamaria
Toothwort
Lathyrus oleraceus
Garden Pea
Lathyrus vernus
Spring Pea
Lepidium draba
Hoary Cress
Lepidium heterophyllum
Smith's Pepperwort
Lepidium latifolium
Dittander
Leucanthemum vulgare
Oxeye Daisy
Leycesteria formosa
Himalayan Honeysuckle
Lilium candidum
Madonna Lily
Lilium formosanum
Formosan Lily
Lilium regale
Royal Lily
Limosella aquatica
Mudwort
Limosella australis
Welsh Mudwort
Linaria repens
Pale Toadflax
Linum catharticum
Fairy Flax
Lobelia dortmanna
Water Lobelia
Lonicera periclymenum
Honeysuckle
Lonicera xylosteum
Fly Honeysuckle