Anagallis arvensis
Family: Primulaceae
Common Names: Scarlet Pimpernel, Red Pimpernel, Red Chickweed, Shepherd's Weather Glass, Shepherd's Clock, Poorman's Barometer
Common Names: Scarlet Pimpernel, Red Pimpernel, Red Chickweed, Shepherd's Weather Glass, Shepherd's Clock, Poorman's Barometer
Introduced USA: AL, AR, AZ, CA, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV