Ilex aquifolium
Holly
Impatiens noli-tangere
Touch-me-not Balsam
Impatiens parviflora
Small Balsam
Inula conyzae
Ploughman's-spikenard
Inula helenium
Elecampane
Isatis tinctoria
Woad
Isoetes lacustris
Quillwort
Jacobaea aquatica
Marsh Ragwort
Juglans regia
Walnut
Juncus acutus
Sharp Rush
Juncus squarrosus
Heath Rush
Juniperus communis
Juniper
Juniperus recurva
Himalayan Juniper
Kickxia elatine
Sharp-leaved Fluellen
Knautia arvensis
Field Scabious
Laburnum anagyroides
Laburnum
Lactuca saligna
Least Lettuce
Lactuca serriola
Prickly Lettuce
Lactuca virosa
Great Lettuce
Lagarosiphon major
Curly Waterweed
Lamiastrum galeobdolon
Yellow Archangel
Lamium amplexicaule
Henbit Dead-nettle
Lamium purpureum
Red Dead-nettle
Lapsana communis
Nipplewort