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Cardamine douglassii
Also called Purple Cress, Douglass' Bittercress, Northern Bittercress, Purple Spring Cress
Cardamine douglassii, the limestone bittercress or purple cress, is a perennial forb that produces white to pink or purple flowers in early spring. It is native to Ontario, Canada, as well as the eastern and central United States.
Cardamine douglassii is widely distributed in Ontario and the eastern and central United States, although local distribution may be spotty. It ranges from Massachusetts west to Ontario, Minnesota, and Missouri south as far as Arkansas, Alabama, and the Carolinas. Cardamine douglassii is listed as an endangered species by the Commonwealth of Massachusetts, and as a species of special concern by the State of Connecticut. In Virginia, it grows in habitats such as swamps and forests, generally with base rich soils. The presence of this species is dependent on appropriate habitat, and it may be eliminated from an area by development, changes in land use, or competition with invasive species.
Large Bitter Cress · Seaside bittercress · Slender toothwort · Cardamine barbaraeoides · Alpine bittercress · Brewer's bittercress · Coralroot bittercress · Bulbous bittercress · Milkmaids · Cardamine carrii · Cutleaf toothwort · Constance's bittercress
Text excerpted from the Wikipedia article Cardamine douglassii by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
