Lace Grass
Lachnanthes
Lady Lupine
Ladyfern
Lagenaria
Lagerstroemia
Lambsquarters
Lamp Rush
Lance Selfheal
Lance-leaf Goldenrod
Lanceleaf Blanketflower
Lanceleaf Figwort
Lanceleaf Fogfruit
Lanceleaf Grapefern
Lanceleaf Greenbrier
Lanceleaf Loosestrife
Lanceleaf Primrose-willow
Lanceleaf Ragweed
Lanceleaf Rattlebox
Lanceleaf Rose Gentian
Lanceleaf Sage
Lanceleaf Tickseed
Lanceleaf Wild Licorice
Lantana
Laportea
Larch
Large Beaksedge
Large Gallberry
Large Gray Willow
Large Whorled Pogonia
Large Yellow Loosestrife
Large Yellow Vetch
Large-flower Primrose-willow
Largebract Ticktrefoil
Largebracted Plantain
Largeflower Aster
Largeflower Bellwort
Largeflower Heartleaf
Largeflower Tickseed
Largefruit Blacksnakeroot
Largeleaf Grass Of Parnassus
Largeleaf Leather-root
Largeleaf Pennywort
Largeleaf Phlox