This occurs mostly in the central Appalachians and Interior Low Plateaus, on more base-rich soils than the closely related species, pubera. S. corei differs in its larger, smooth-backed sepals and its larger, more petiolate leaves on flowering shoots; 2n = 60 versus 30 (Cr, FNA 5, W). Some incomplete colls. are difficult to assign. Both species produce relatively tall, persistent, non-flowering summer shoots, but corei often forms more extensive rhizomatous patches of these shoots.