Levisticum
Lewiston Cornsalad
Licorice
Licorice Bedstraw
Licorice-root
Lilac
Lilac Chastetree
Lilac Sage
Lily
Limber Honeysuckle
Limestone Adderstongue
Limestone Bittercress
Limestone Calamint
Limestone Meadow Sedge
Limestone Wild Petunia
Limp Mannagrass
Limpograss
Linden Arrowwood
Lindheimer Panicgrass
Linearleaf Snapdragon
Lined Sedge
Lionsheart
Lipfern
Little Barley
Little Bluestem
Little Cottonrose
Little Duckweed
Little Evening Primrose
Little Floating Bladderwort
Little Floatingheart
Little Grapefern
Little Green Sedge
Little Hogweed
Little Lovegrass
Little Quakinggrass
Little Sweet Betsy
Littleleaf Buttercup
Littlepod False Flax
Littleseed Canarygrass
Liverleaf Wintergreen
Lobed Spleenwort
Lobelia
Lobularia
Locust