Rabbit-tobacco
(Pseudognaphalium obtusifolium)
Wild Radish
(Raphanus raphanistrum)
Ragweed
(Ambrosia artemisiifolia)
Giant Ragweed
(Ambrosia trifida)
Golden Ragwort
(Packera aurea)
Golden Rain-tree
(Koelreuteria paniculata)
Ramp
(Allium tricoccum)
Ramp
(Allium tricoccum)
Bird's Rape
(Brassica rapa)
Australian Raspberry
(Rubus parvifolius)
Black Raspberry
(Rubus occidentalis)
Japanese Raspberry
(Rubus parvifolius)
Purple-flowering Raspberry
(Rubus odoratus)
Rattlesnake-master
(Eryngium aquaticum var. aquaticum)
Downy Rattlesnake-plantain
(Goodyera pubescens)
Lion's-foot Rattlesnake-root
(Nabalus serpentarius)
Tall Rattlesnake-root
(Nabalus altissimus)
Eastern Redbud
(Cercis canadensis var. canadensis)
Great Rhododendron
(Rhododendron maximum)
Lyre-leaf Rockcress
(Arabidopsis lyrata subsp. lyrata)
Smooth Rockcress
(Boechera laevigata var. laevigata)
Dame's Rocket
(Hesperis matronalis)
Dame's Rocket
(Hesperis matronalis)
Yellow Rocket
(Barbarea vulgaris)
Multiflora Rose
(Rosa multiflora)
Multiflora Rose
(Rosa multiflora)
Swamp Rose
(Rosa palustris)
Rose-mallow
(Hibiscus moscheutos)
Rose-mallow
(Hibiscus moscheutos)
Rose-of-sharon
(Hibiscus syriacus)