This poorly known, globally rare species (FNA 20) occurs mostly on the southern Interior Low Plateaus and Ridge-and-Valley, in native grassland remnants and associated roadsides or old fields, on or near rocky limestone soils. The range includes somewhat disjunct localities in Ky., Tenn. (where most common), Ala. Ga. (including a coll. at GA & MISS from the coastal Chatham Co.) and apparently Fla. (UCHT: G. Morton #9396, Escambia Co.); more doubtfully in Ohio (GH: W.C. Werner, 1890, "near Painesville" in Lake Co., with purple rays; "aff. priceae" det. J. Semple). Records from some other regions or states appear to be erroneous (e.g. at SERNEC). The overall range is similar to ranges of Clematis glaucophylla, Oxalis macrantha,Thaspium chapmanii and Rudbeckia tenax. In contrast to pilosum and juniperinum, priceae differs as follows (based largely on FNA 20): typically octoploid (2n = 64 versus 32 or 48); rays larger (mostly 9-15 mm long versus 5-8 mm) and bluish-violet to pink-purple (versus white or rarely colored); heads larger (with involucres usually 5.5-7.1 mm high versus 3.5-5.1 mm), and with more disc florets on average (mostly 30-50 versus 15-40); inflorescence usually becoming relatively open with long racemiform branches (versus more dense and paniculiform with often arching branches); leaves narrower (the larger ones mostly 3-5 mm wide versus 5-15 mm), often somewhat glaucous (versus plain green); plants usually glabrous throughout (versus densely pilose or glabrous). It has been suggested that some plants with paler flowers and hairier leaves, including the type of priceae (M), are hybrids with pilosum or juniperinum; and that the type of A. kentuckiensis Britt. is more clearly distinct from typical pilosum (Medley 2021). Cronquist (1948) stated: "In Athens, Georgia, I have seen both "species" [priceae and pilosum] growing together and apparently hybridizing freely, with many intermediate specimens forming a gradual transition from one extreme to the other." However, these colls. (Cronquist 4207 etc. at GA) all appear to be pilosus with some pink-purplish rays. Further research is needed to examine potential hybridization, despite the reported difference in ploidy. If the type of priceae is really a hybrid, then S. kentuckiense (Britt.) Medley would be the correct name.