This is tentatively recognized here, with larger rays than typical canadensis: 6-13 mm long versus 1-5 mm (W). However, it is often considered just a form (Y) or ignored (FNA 21). In Ky. colls. have been referred to this taxon from slopes along or near the Kentucky Rv. in CLAR, ESTI, JESS, MERC and OWEN (mostly colls. at KY); also from EDMO (B) and PIKE (M). Their degree of distinction needs further analysis. More distinct plants in c. Tenn., n. Ala., and nw. Ga. (Sm, F; D. Estes, pers. comm.) have larger discs and rays, which are pure white (versus creamy-white); see photo of doubled rays by Jeff McMillian in PL.