P HACELI A HI RSUTA Nutt. Trans. Am. Phil. Soc. (II.) 5: 191. 1833-37.
Although classed as an annual, this Pliacelia appears to be a biennial. Mr. Nuttall, in the original dcscription, says " annual or perhaps also biennial." On Stone Mountain, Georgia, the species flowers in the spring, the plants soon die and disappear on ac count of the extreme heat, the seeds falling to the ground at once germinate, producing tufts of spatulate, oblong-spatulate or obo vate, short-petioled, sharply serrate leaves which arc not in the least pinnatifid, as are those of the following season.