Impatiens glandulifera
Indian Balsam
Impatiens noli-tangere
Touch-me-not Balsam
Impatiens parviflora
Small Balsam
Inonotus dryadeus
Oak Bracket
Inonotus hispidus
Shaggy Bracket
Inula conyzae
Ploughman's-spikenard
Inula helenium
Elecampane
Iris foetidissima
Stinking Iris
Iris pseudacorus
Yellow Iris
Isoetes echinospora
Spring Quillwort
Isoetes lacustris
Quillwort
Isolepis setacea
Bristle Club-rush
Jacobaea aquatica
Marsh Ragwort
Jacobaea vulgaris
Common Ragwort
Jacobaea x ostenfeldii
Jasione montana
Sheep's-bit
Jasminum nudiflorum
Winter Jasmine
Juglans regia
Walnut
Juncus acutiflorus
Sharp-flowered Rush
Juncus acutus
Sharp Rush
Juncus articulatus
Jointed Rush
Juncus bufonius
Toad Rush
Juncus bulbosus
Bulbous Rush
Juncus compressus
Round-fruited Rush
Juncus effusus
Soft-rush
Juncus gerardii
Saltmarsh Rush
Juncus inflexus
Hard Rush
Juncus squarrosus
Heath Rush
Juncus subnodulosus
Blunt-flowered Rush
Juncus tenuis
Slender Rush
Juniperus communis
Juniper
Kickxia elatine
Sharp-leaved Fluellen
Knautia arvensis
Field Scabious
Koenigia polystachya
Himalayan Knotweed
Laburnum anagyroides
Laburnum
Laburnum x watereri
Hybrid Laburnum
Lactarius torminosus
Wooly Milk Cap
Lactuca saligna
Least Lettuce
Lactuca serriola
Prickly Lettuce
Laetiporus sulphureus
Sulphur Polypore
Lagarosiphon major
Curly Waterweed
Lagurus ovatus
Hare's-tail
Lamiastrum galeobdolon
Yellow Archangel
Lamium album
White Dead-nettle
Lamium amplexicaule
Henbit Dead-nettle
Lamium hybridum
Cut-leaved Dead-nettle
Lamium purpureum
Red Dead-nettle
Lapsana communis
Nipplewort
Larix decidua
European Larch
Larix x marschlinsii
Hybrid Larch
Lathraea clandestina
Purple Toothwort
Lathraea squamaria
Toothwort
Lathyrus aphaca
Yellow Vetchling
Lathyrus japonicus
Sea Pea
Lathyrus latifolius
Broad-leaved Everlasting-pea
Lathyrus linifolius
Bitter-vetch
Lathyrus nissolia
Grass Vetchling
Lathyrus oleraceus
Garden Pea
Lathyrus pratensis
Meadow Vetchling
Lathyrus sylvestris
Narrow-leaved Everlasting-pea
Lemna
Lemna gibba
Fat Duckweed
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