Click on the image below to enlarge it and download a high-resolution
TIFF file. Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 237. Courtesy of Kentucky Native Plant Society. Scanned by Omnitek Inc. Usage Requirements.
See U.S. county distributions (when available) by clicking on the map or the linked states below: USA (AK, CT, IL, MA, ME, MI, MN, MT, ND, NH, NJ, NY, OH, OR, PA, RI, SD, VA, VT, WA, WI, WV), CAN (AB, BC, LB, MB, NB, NF, NS, NT, NU, ON, PE, QC, SK, YT)
The related entity italicized and indented above is listed by the U.S. federal government or a state. Common names are from state and federal lists. Click on a place
name to get a complete noxious weed list for that location,
or click here for a composite list of all
Federal and State Noxious Weeds.
The related entity italicized and indented above can be weedy or invasive according to the authoritative sources noted below. This plant
may be known by one or more common names in different
places, and some are listed above. Click on an acronym
to view each weed list, or click here for a
composite list of Weeds of the U.S.