Lactuca serriola
Prickly Lettuce
Lactuca virosa
Great Lettuce
Lagarosiphon major
Curly Waterweed
Lagerstroemia speciosa
Giant Crepe-myrtle
Lamiastrum galeobdolon
Yellow Archangel
Lamium album
White Dead-nettle
Lamium amplexicaule
Henbit Dead-nettle
Lamium hybridum
Cut-leaved Dead-nettle
Lamium maculatum
Spotted Dead-nettle
Lamium purpureum
Red Dead-nettle
Lantana camara
Common Lantana
Lantana canescens
Lantana montevidensis
Trailing Lantana
Laportea interuppta
Hen's Nettle
Lapsana communis
Nipplewort
Larix
Bonsai Larch
Larix decidua
European Larch
Larix kaempferi
Japanese Larch
Larix x marschlinsii
Hybrid Larch
Lathraea clandestina
Purple Toothwort
Lathraea squamaria
Toothwort
Lathyrus aphaca
Yellow Vetchling
Lathyrus japonicus
Sea Pea
Lathyrus laevigatus
Yellow Gess
Lathyrus latifolius
Broad-leaved Everlasting-pea
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
Laurus nobilis
Bay
Lavandula angustifolia
Garden Lavender
Ledebouria socialis
Silver Squill
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
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
Leucaena leucocephala
Lead Tree
Leucanthemum vulgare
Oxeye Daisy
Leucojum aestivum
Summer Snowflake
Leucojum vernum
Spring Snowflake
Leucophyllum frutescens
Texas Sage
Leuenbergeria bleo
Rose Cactus
Leycesteria formosa
Himalayan Honeysuckle
Licuala grandis
Ruffled Fan Palm
Licuala peltata
Fan Palm
Ligustrum ovalifolium
Garden Privet
Ligustrum vulgare
Wild Privet
Lilium bulbiferum
Orange-lily
Lilium candidum
Madonna Lily
Lilium davidii
Pere#David's Lily
Lilium formosanum
Formosan Lily
Lilium hansonii
Hanson's Lily
Lilium henryi
Henry's Lily
Lilium hybrid
Lily (orange)