| Lablab purpurascens (Dolichos lablab) |
Hyacinth Bean Vine, Indian Bean |
 |
| Laburnum vulgaris (anagyroides) |
Common Laburnum |
|
| Lachenalia |
Cape Cowslip |
|
| Lagerstroemeria gigantea |
Crepe Myrtle |
 |
| Lamium album |
White Deadnettle |
 |
| Lamium galeobdolon |
Yellow Archangel, Yellow Deadnettle |
|
| Lamium purpureum |
Purple (Red) Deadnettle |
|
| Lantana montevidensis |
Trailing Lantana, Creeping Lantana |
|
| Lapageria rosea |
Chilean Bell Flower |
|
| Lathyrus (many) |
Pea |
 |
| Lathyrus |
Sweet Pea |
|
| Lathyrus japonicus maritimus |
Sea Pea |
|
| Lathyrus latifolius |
Perennial Sweet Pea |
|
| Lathyrus odoratus |
Sweet Pea |
|
| Lathyrus pratensis |
Yellow Meadow Vetchling |
|
| Lathyrus vernus 'Alboroseus' |
Spring Pea |
|
| Laurentia (Isotoma) axillaris |
Blue Star Creeper |
|
| Lavandula (many) |
Lavender |
|
| Lavandula angustifolia |
Lavender |
|
| Lavandula stoechas |
French Lavender, Spanish Lavender |
|
| Lavatera cachemiriana |
Mallow |
 |
| Legousia speculum-veneris |
Venus' Looking Glass |
|
| Leibnitzia anandria |
Japanese Gerbera |
|
| Leonotis leonurus |
Lion's Ear |
|
| Leptospermum (many) |
Tea Tree |
|
| Leptospermum |
Tea Tree |
|
| Leucanthemum superbum |
Shasta Daisy |
|
| Leucanthemum vulgare |
Tea Tree |
|
| Lewisia (many) |
Bitter Root |
|
| Lewisia nevadensis alba |
Nevada Bitter Root |
|
| Leycesteria formosa |
Himalayan Honeysuckle |
|
| Liatris pycnostachya |
Kansas Feather |
|
| Lilium (many) |
Lily |
|
| Lilium martagon |
Turk's Cap Lily, Martagon Lily |
|
| Limnanthes douglasii |
Poached Egg Plant |
|
| Limonium cosyrense |
Statice, Sea Lavender |
|
| Limonium sinuatum |
Statice, Sea Lavender |
|
| Linaria (many) |
Toadflax |
|
| Linaria alpina |
Alpine Toadflax |
|
| Linaria maroccana |
Moroccan Toadflax |
|
| Linaria vulgaris |
Common Toadflax |
|
| Linum (many) |
Flax |
|
| Linum arboreum |
Tree Flax, Shrubby Flax |
|
| Linum grandiflorum v rubrum |
Scarlet Flax |
|
| Linum suffruticosum ssp salsoloides |
White Flax |
|
| Liquidambar styraciflua |
Sweet Gum |
|
| Liriope muscari |
Lilyturf |
|
| Lisianthus 'Heidi' |
Prarie Gentian |
|
| Litchi chinensis |
Lychee |
|
| Lithophragma parviflora |
Woodland Star |
|
| Lithopos marmorata |
Living Stones |
|
| Lithospermum (Moltkia) x intermedium |
Moltkia |
|
| Littonia modesta |
Climbing Lily |
|
| Lobelia (many) |
Lobelia |
|
| Lobelia cardinalis |
Cardinal Flower |
|
| Lobelia erinus |
Trailing Lobelia |
|
| Lobelia excelsa |
Devil's Tobacco |
|
| Lobelia 'Ruby Slippers' |
Lobelia hybrid |
|
| Lobelia tupa |
Devil's Tobacco |
|
| Lobularia maritima |
Sweet Alyssum |
|
| Lomatia ferruginea |
Lomatia |
|
| Lonicera periclymenum |
Honeysuckle, Woodbine |
|
| Lophospermum erubescens |
Creeping Gloxinia |
|
| Lotus (Tetragonolobus) maritimus |
Winged Pea, Dragon's Teeth |
|
| Lotus corniculatus |
Bird's Foot Trefoil |
|
| Luculia gratissima |
Luculia |
|
| Lunaria annua |
Honesty |
|
| Lupinus (many) |
Lupin |
|
| Lupinus hybrid |
Lupin |
|
| Lupinus lepidus |
Pacific Lupin |
|
| Lupinus versicolor |
Lupin |
|
| Lychnis (many) |
Campion, Catchfly |
|
| Lychnis chalcedonica |
Maltese Cross |
|
| Lychnis coronaria |
Rose Campion |
|
| Lychnis flos-cuculi |
Ragged Robin |
|
| Lychnis viscaria |
Campion, Catchfly |
|
| Lysimachia |
Loosestrife |
|
| Lythrum salicaria |
Purple Loosestrife |
|
