This largely diploid (2n = 38) species of the Ozarks and Gulf Coastal Plain has been confused with the incanum group (including loomisii and pycnanthemoides) in Ky. and elsewhere (Hill 2007e). P. albescens differs in its calyx teeth and subtending bracts, which (as in the pilosum group) lack apical bristles (Cr, W); also heads and leaves tend to be relatively small. It is widespread on uplands in s. Mo., where the incanum group is absent (St), and it is known from s. Ill. (Hill 2007e), where their ranges abut. P. albescens has been reported from Ky. in CALL (M based on Hickok #445 at MUR), HICK (Grubbs 1989), LYON (Davidse #40061 at MO) and perhaps elsewhere (St, Cr), but no verified colls. have been located; it also remains poorly documented or unverified in Tenn. (Ch, K).. The report from LEWI (B) was based on misidentified pycnanthemoides. There is an old verified coll. at GH ("ex herb. George Thurber"), with "Kentucky" written on the label; this might be a coll. of C.W. Short from within the state, or it might have been sent to him from elsewhere.