Ilex aquifolium
Holly
Illecebrum verticillatum
Coral-necklace
Impatiens glandulifera
Indian Balsam
Impatiens noli-tangere
Touch-me-not Balsam
Impatiens parviflora
Small Balsam
Imperata
Imperata cylindrica
Cogon Grass
Indigofera hirsuta
Hairy Indigo
Inula conyzae
Ploughman's-spikenard
Inula helenium
Elecampane
Ipomoea batatas
Sweet Potato
Ipomoea carnea
Bush Morning Glory
Iris foetidissima
Stinking Iris
Iris pseudacorus
Yellow Iris
Isatis tinctoria
Woad
Isoetes echinospora
Spring Quillwort
Isoetes lacustris
Quillwort
Isolepis setacea
Bristle Club-rush
Ixora chinensis
Chinese Ixora
Jacobaea aquatica
Marsh Ragwort
Jacobaea vulgaris
Common Ragwort
Jasione montana
Sheep's-bit
Jatropha integerrima
Peregrina
Juglans regia
Walnut
Juncus acutus
Sharp Rush
Juncus articulatus
Jointed Rush
Juncus bufonius
Toad Rush
Juncus bulbosus
Bulbous Rush
Juncus compressus
Round-fruited Rush
Juncus inflexus
Hard Rush
Juncus squarrosus
Heath Rush
Juncus subnodulosus
Blunt-flowered Rush
Juncus tenuis
Slender Rush
Juniperus chinensis
Chinese Juniper
Juniperus communis
Juniper
Juniperus recurva
Himalayan Juniper
Justicia brandegeeana
Shrimp Plant
Kalanchoe daigremontiana
Mother of Thousands
Kickxia elatine
Sharp-leaved Fluellen
Kleinhovia hospita
Guest Tree
Knautia arvensis
Field Scabious
Koenigia polystachya
Himalayan Knotweed
Laburnum anagyroides
Laburnum
Lactuca saligna
Least Lettuce
Lactuca serriola
Prickly Lettuce
Lagarosiphon major
Curly Waterweed
Lamiastrum galeobdolon
Yellow Archangel
Lamium album
White Dead-nettle
Lamium purpureum
Red Dead-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