United States of America, Colorado, Lower Poudre and Platte valleys, a potentially serious weed.
Alien, widely naturalized in canyon-bottoms.
The flowers can be pink or white.
Flower
Alien, widely naturalized in canyon-bottoms and floodplains, lower Arkansas, Powder, and Platte valleys; A potentially serious weed; flowers can be pink or white.
For additional information about this specimen, please contact: Jennifer Ackerfield, Head Curator of Biodiversity Collections (jennifer.ackerfield@botanicgardens.org)