Wildflowers of the United States | |||||||||||||||||||||||||||||||
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Isanthus brachiatus - False Pennyroyal, Fluxweed, Glade Bluecurls. This is one of many plants undergoing changes in classification. According to my research, it was originally considered to be part of Trichostema (Linnaeus, 1737), subsequently became the sole member of the Isanthus genus (Michaux, 1803), in 1978 was sent over to Trichostema for a while (Lewis), and recently some authorities have moved it back to Isanthus as the only species in that genus. Of course, during all of this scientific debate, those of us classified as commoners would have continued to call it whatever we called it previously – be it False Pennyroyal or Fluxweed, or whatever other common name was applied locally. The Trichostema genus members are commonly known as Bluecurls.
| False Pennyroyal is listed as Special Concern, Endangered, or Threatened in Connecticut, Massachusetts, Michigan, and New Jersey. It is rare in the remaining New England states where it can be found at all. This plant was pointed out and identified for me by Jay Clark, author of Wildflowers of Pigeon Mountain on a walk through a cedar glade at the foot of Pigeon Mountain in Walker County, Ga in late September. Found in: AL, AR, AZ, CT, DC, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MN, MO, MS, NC, NE, NJ, NM, NY, OH, OK, PA, SC, SD, TN, TX, VA, VT, WI, WV Leave comments on Isanthus brachiatus at this link.   Blue=Native; Grey=Introduced Map from USDA Plants Database: USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 16 Jan 2025). National Plant Data Team, Greensboro, NC 27401-4901 USA. Search Our Database: Enter any portion of the Scientific, Common Name, or both. Do a general Google search of the entire site: #ad  Follow USWildflowers on Twitter
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