Laurel,
Drooping (Leucothoe fontanesiana cv. Scarletta)
Great (Rhododendron maximum)
Mountain (Kalmia latifolia)
Sheep (Kalmia angustifolia)
Sheep (Kalmia latifolia)
Laurus
albidus
coriacea
sassafras
Lavandula heterophylla
Lavauxia taraxacoides
Lavender
Cotton (Santolina chamaecyparissus)
Thistle (Cirsium neomexicanum)
Lavender,
Desert (Hyptis emoryi)
Sweet (Lavandula heterophylla)
Lavenderleaf Sundrops (Calylophus lavandulifolius)
Lawn Marsh Pennywort (Hydrocotyle sibthorpioides)
Lawyer’s Wig (Coprinus comatus)
Laxflower (Baileya pauciradiata)
Le Conte Barrel Cactus (Ferocactus cylindraceus)
Leadplant (Amorpha canescens)
Leadtree, White (Leucaena leucocephala)
Leadwort (Ceratostigma plumbaginoides)
Leaf,
Copper (Acalypha amentacea ssp. wilkesiana)
Cranberry (Hibiscus acetosella ‘Haight-Ashbury’)
Dollar (Desmodium rotundifolium)
Umbrella (Diphylleia cymosa)
Velvet (Kalanchoe beharensis)
Leafy
Beggarticks (Bidens frondosa)
Bulrush (Scirpus polyphyllus)
Jelly Fungus (Tremella foliacea)
Liverwort (Bazzania trilobata)
Least Hop Clover (Trifolium dubium)
Leather Fern (Acrostichum danaeifolium)
Leatherleaf
(Chamaedaphne calyculata)
Mahonia (Mahonia bealei)
Leatherwood (Dirca palustris)
Leatherwood, Eastern (Dirca palustris)
Leavenworth’s Tickseed (Coreopsis leavenworthii)
Lea’s Mycena (Mycena leaiana)
Lecanora
oreinoides
thysanophora
Leccinum aurantiacum
Lechuguilla (Agave lechuguilla)
Lecidea
albocaerulescens
atrata
dicksonii
Ledum
groenlandicum
palustre ssp. groenlandicum
palustre var. latifolium
Leek (Allium ampeloprasum ‘Bleu Solaize’)
Leek, Wild (Allium tricoccum)
Legousia perfoliata
Lei Orchid (Dendrobium ‘Pegasus’)
Leiophyllum
buxifolium
buxifolium var. hugeri
buxifolium var. prostratum
hugeri
lyonii
Lemaireocereus marginatus
Lemna
cyclostasa
minima
minor
Lemon,
Ground (Podophyllum peltatum)
Wild (Podophyllum peltatum)
Lemonade
Berry (Rhus integrifolia)
Sumac (Rhus integrifolia)
Lemonadeberry (Rhus integrifolia)
Lenticular Sedge (Carex lenticularis)
Lentinula edodes
Lentinus
edodes
mellianus
shiitake
tonkinensis
Lenzites betulina
Leonotis leonurus
Leonurus [Genus]
Leonurus cardiaca
Leotia lubrica
Lepachys
columnaris
columnifera
Lepargyrea argentea
Lepidium
montanum
virginicum
Lepidospartum latisquamum
Lepiota shiitake
Leptamnium virginianum
Leptandra virginica
Leptoglottis
angustisiliqua
chapmanii
microphylla
Leptospermum scoparium ‘Burgundy Queen’
Lespedeza
bicknellii
capitata
capitata var. stenophylla
capitata var. velutina
capitata var. vulgaris
cuneata
hirta
hirta
juncea var. sericea
procumbens
sericea
stuevei
virginica
Lespedeza,
Chinese (Lespedeza cuneata)
Perennial (Lespedeza cuneata)
Roundhead (Lespedeza capitata)
Sericea (Lespedeza cuneata)
Lesquerella
arizonica
arizonica var. nudicaulis
Lesser
Bulrush (Typha angustifolia)
Celandine (Ranunculus ficaria)
Crowfoot (Ranunculus ficaria)
Daisy Fleabane (Erigeron strigosus)
Reedmace (Typha angustifolia)
Rushy Milkvetch (Astragalus convallarius)
Snakeroot (Ageratina aromatica)
Letharia vulpina
Lettuce,
Canada (Lactuca canadensis)
Florida (Lactuca floridana)
Prickly (Lactuca serriola)
Water (Pistia stratiotes)
Wild (Lactuca canadensis)
Woodland (Lactuca floridana)
Leucadendron
argenteum
nutans
Leucaena leucocephala
Leucanthemum
leucanthemum
vulgare
vulgare var. pinnatifidum
× superbum
Leucoagaricus naucinus
Leucobryum [Genus]
Leucophyllum frutescens
Leucospermum
cordifolium
‘Hawaii Yellow’
Leucothoe
axillaris var. editorum
catesbaei
editorum
fontanesiana
fontanesiana cv. Scarletta
Lewisia (Lewisia cotyledon)
Lewisia cotyledon
Liatris [Genus]
Liatris
bracteata
elegans
scariosa
spicata
spicata ‘Floristan Violet’
Lichen
fuliginosus
fuliginosus
fuliginosus
Lichen,
Beard (Usnea longissima)
Beard (Usnea subfloridana)
Blemished (Phlyctis argena)
Blood (Mycoblastus sanguinarius)
Bran (Parmeliopsis hyperopta)
Cup (Cladonia cristatella)
Cup (Cladonia fimbriata)
Cup (Cladonia rei)
Felt (Peltigera aphthosa)
Flavoparmelia (Flavoparmelia caperata)
Lung (Lobaria pulmonaria)
Map (Rhizocarpon disporum)
Mapledust (Lecanora thysanophora)
Navel (Umbilicaria mammulata)
Reindeer (Cladina mitis)
Reindeer (Cladina rangiferina)
Ring (Evernia mesomorpha)
Rosette (Physcia adscendens)
Target (Arctoparmelia centrifuga)
Trumpet (Cladonia fimbriata)
Wand (Cladonia rei)
Whitewash (Phlyctis argena)
Wolf (Letharia vulpina)
Yellow (Vulpicida tilesii)
Licuala grandis
Ligustrum
microcarpum
sinense
villosum
vulgare
Lilac,
California (Ceanothus ‘Concha’)
Dwarf (Syringa patula ‘Miss Kim’)
Manchurian (Syringa pubescens ssp. patula ‘Miss Kim’)
Lilium
canadense
lancifolium
philadelphicum
regale
‘Star Gazer’
Lily
Turf (Liriope muscari ‘Christmas Tree’)
Turf (Liriope muscari)
of the Nile (Zantedeschia aethiopica)
of the Valley (Convallaria majalis)
of the Valley (Polygonum persicaria)
Lily,
Ajo (Hesperocallis undulata)
Avalanche (Erythronium montanum)
Blue-bead (Clintonia borealis)
Bluebead (Clintonia borealis)
Boat (Tradescantia spathacea)
Bush (Clivia miniata)
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Lily,
Calla (Zantedeschia aethiopica)
Canada (Lilium canadense)
Canna (Canna × generalis ‘Lucifer’)
Clinton's (Clintonia borealis)
Cobra (Darlingtonia californica)
Corn (Clintonia borealis)
Corn (Veratrum californicum)
Desert (Hesperocallis undulata)
Ditch (Hemerocallis fulva)
Easter (Zantedeschia aethiopica)
Flax (Dianella tasmanica)
Grass (Ornithogalum umbellatum)
Impala (Adenium obesum)
Kaffir (Clivia miniata)
Meadow (Lilium canadense)
Natal (Clivia miniata)
Oriental (Lilium ‘Star Gazer’)
Pineapple (Eucomis vandermerwei)
Pineapple (Eucomis ‘Sparkling Burgundy’)
Plantain (Hosta sieboldiana ‘Big Daddy’)
Plantain (Hosta ‘Fire and Ice’)
Plantain (Hosta ‘Hadspen Heron’)
Plantain (Hosta ‘Sum and Substance’)
Regal (Lilium regale)
Rock (Aquilegia canadensis)
Sego (Calochortus nuttallii)
Spear (Doryanthes palmeri)
Stargazer (Lilium ‘Star Gazer’)
Straw (Clintonia borealis)
Tiger (Lilium lancifolium)
Toad (Tricyrtis hirta)
Torch (Kniphofia uvaria)
Trout (Erythronium americanum)
Water (Nymphaeaceae)
Wood (Lilium philadelphicum)
Lily-of-the-valley
Bush (Pieris japonica ‘Dorothy Wyckoff’)
Bush (Pieris japonica)
Lily-of-the-valley, False (Maianthemum canadense)
Limbo, Gumbo (Bursera simaruba)
Lime (Citrus ×aurantiifolia (pro sp.) [medica × sp.])
Limoncillo (Hedeoma drummondii)
Limonia
aurantifolia var.
aurantiifolia
Linaria
canadensis
dalmatica
linaria
vulgaris
Linaria-leaved Indian Paintbrush (Castilleja linariifolia)
Linden,
American (Tilia americana)
Common (Tilia ⨉)
Little-leaf (Tilia cordata ‘Greenspire’)
Littleleaf (Tilia cordata)
Lindera
benzoin
benzoin var. pubescens
Linearleaf Four-o'clock (Mirabilis linearis)
Lingonberry (Vaccinium vitis-idaea)
Linnaea borealis
Linum
grandiflorum
grandiflorum var. rubrum
Lion in a Cage (Oenothera deltoides)
Lion’s
Mane (Hericium erinaceus)
Tail (Leonotis leonurus)
Tail (Leonurus cardiaca)
Liquidambar styraciflua
Liriodendron tulipifera
Liriope
muscari
muscari ‘Christmas Tree’
Litchi chinensis
Lithospermum
arvense
multiflorum
Little
Evening Primrose (Oenothera perennis)
Hogweed (Portulaca oleracea)
Starwort (Stellaria graminea)
Little-leaf
Buttercup (Ranunculus abortivus)
Linden (Tilia cordata ‘Greenspire’)
Mimosa (Mimosa microphylla)
Littleleaf
Desert Sumac (Rhus microphylla)
Linden (Tilia cordata)
Rhatany (Krameria erecta)
Sensitive Briar (Mimosa microphylla)
Sumac (Rhus microphylla)
Live Oak (Quercus virginiana)
Live-forever, Desert (Dudleya saxosa ssp. aloides)
Liverleaf (Hepatica nobilis var. obtusa)
Liverwort, Leafy (Bazzania trilobata)
Livistona
chinensis
oliviformis
Lobaria
fuliginosa
pulmonaria
Lobelia [Genus]
Lobelia
cardinalis
cardinalis ssp. graminea
cardinalis var. graminea
cardinalis var. meridionalis
cardinalis var. multiflora
cardinalis var. phyllostachya
cardinalis var. propinqua
cardinalis var. pseudosplendens
cv.
erinoides
erinus
fulgens
inflata
siphilitica
splendens
x speciosa ‘Ruby Slippers’
Lobelia,
Blue (Lobelia cv.)
Edging (Lobelia erinus)
Lobivia
andalgalensis
grandiflora
huascha
hyalacantha
purpureominiata
Loblolly Pine (Pinus taeda)
Lobster Mushroom (Hypomyces lactifluorum)
Lochnera rosea
Locoweed (Datura stramonium)
Locoweed,
Silverline (Astragalus tephrodes)
Whitney's (Astragalus whitneyi)
Locust,
Black (Robinia pseudoacacia)
Black (Robinia ‘Purple Robe’)
Honey (Gleditsia triacanthos)
Log,
Batta (Agave karatto)
Dagger (Agave karatto)
Logwood (Haematoxylum campechianum)
Lollipop Plant (Pachystachys lutea)
Long-awned Wood Grass (Brachyelytrum erectum)
Long-bracted Tickseed Sunflower (Bidens aristosa)
Long-flowered
Gillia (Ipomopsis longiflora)
Skyrocket (Ipomopsis longiflora)
Trumpet Gilia (Ipomopsis longiflora)
Long-haired Sedge (Carex crinita)
Long-plumed Purple Avens (Geum triflorum)
Long-spined Prickly Pear (Opuntia macrocentra)
Long-stalked Aster (Symphyotrichum dumosum)
Longbranch Frostweed (Helianthemum canadense)
Longleaf
Indian Paintbrush (Castilleja subinclusa var. franciscana)
Jointfir (Ephedra trifurca)
Longroot Smartweed (Polygonum amphibium)
Longspine Sandbur (Cenchrus longispinus)
Lonicera
canadensis
fragrantissima
japonica
japonica var. aureo-reticulata
japonica var. chinensis
sempervirens
sempervirens var. hirsutula
sempervirens var. minor
sempervirens var. sempervirens
sempervirens ‘John Clayton’
sibirica
tatarica
tatarica var. latifolia
villosa
Loosestrife,
Bog (Lysimachia terrestris)
Bulbil (Lysimachia terrestris)
Earth (Lysimachia terrestris)
Fringed (Lysimachia ciliata)
Garden (Lysimachia punctata)
Lake (Lysimachia terrestris)
Purple (Lythrum salicaria)
Purple (Lythrum virgatum)
Whorled (Lysimachia quadrifolia)
Yellow (Lysimachia punctata)
Lophocereus schottii
Lorinseria areolata
Lotus
corniculatus
maculata ‘Gold Flash’
Lotus,
Pink (Nelumbo nucifera)
White (Nymphaea alba)
Louise’s Swallow-wort (Cynanchum louiseae)
Louisiana
Iris (Iris sp.)
Phlox (Phlox divaricata)
Love Plant (Oxalis triangularis)
Love, Burning (Lychnis chalcedonica)
Love-lies-bleeding (Amaranthus caudatus)
Love-vine (Cassytha filiformis)
Lovegrass, India (Eragrostis pilosa)
Lovevine (Cassytha filiformis)
Low
Bush Cranberry (Vaccinium vitis-idaea)
Bush Cranberry or Partridgeberry (Vaccinium vitis-idaea)
Bush Honeysuckle (Diervilla lonicera)
Bush Partridgeberry (Vaccinium vitis-idaea)
Hop Clover (Trifolium campestre)
Rattlebox (Crotalaria pumila)
Rose (Rosa carolina)
Woollygrass (Dasyochloa pulchella)
Lowbush Blueberry (Vaccinium angustifolium)
Lucerne (Medicago sativa)
Ludisia discolor
Ludwigia
leptocarpa
leptocarpa var. meyeriana
octovalvis
sedioides
Lunaria annua
Lung
Lichen (Lobaria pulmonaria)
Moss (Lobaria pulmonaria)
Lungs, Oak (Lobaria pulmonaria)
Lungwort
(Lobaria pulmonaria)
(Pulmonaria officinalis)
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