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Scientific Name Common Name(s) Plant Category Image
Cirsium muticum Marsh thistle, Swamp thistle Wildflowers
Cirsium pumilum Fragrant thistle, Pasture thistle Wildflowers
Cirsium vulgare Bull thistle, Common thistle Wildflowers
Claytonia caroliniana Carolina spring beauty, Spring beauty Wildflowers
Clematis spp. Clematis, Leather flower, virgin's bower Perennials, Poisonous Plants, Vines, Wildflowers
Clintonia borealis Bluebead lily, Clinton's lily, Clintonia, Corn-lily, bluebead-lily Poisonous Plants, Wildflowers
Clintonia umbellulata Clinton's lily, Speckled wood lily, White clintonia Wildflowers
Clitoria mariana Butterfly pea Perennials, Vines, Wildflowers
Commelina communis Common dayflower, Dayflower Perennials, Wildflowers
Conoclinium coelestinum Blue boneset, Blue mist flower, Hardy ageratum Native Plants, Perennials, Wildflowers
Conopholis americana Cancer corn, Squaw root Wildflowers
Convallarina montana Lily of the valley Wildflowers
Convolvulus arvensis Field bindweed, Small bindweed Wildflowers
Corallorrhiza maculata Spotted coralroot Wildflowers
Coreopsis major Greater tickseed, Wood tickseed Wildflowers
Coreopsis spp. Native Plants, Perennials, Wildflowers
Coreopsis tinctoria Garden coreopsis, Golden coreopsis, Tick-seed Annuals, Wildflowers
Coreopsis tripteris Tall coreopsis, Tall tickseed Wildflowers
Coreopsis verticillata Threadleaf coreopsis, Whorled coreopsis Perennials, Wildflowers
Cornus canadensis Bunchberry Groundcover, Native Plants, Wildflowers
Coronilla varia Crown vetch, Purple crown vetch Wildflowers
Corydalis sempervirens Pale corydalis Wildflowers
Crotalaria spectabilis Showy crotalaria Poisonous Plants, Wildflowers
Cuscuta compacta Love-vine Wildflowers
Cymophyllus fraseri Fraser's sedge Wildflowers