This is globally rare, known mostly from base-rich outcrops of diverse types in w. Va. and se. W.V., with outliers in w. Md. and nw. N.C. (K, W). It has varied chromosome number; 2n = 28, 44-49, ?56 (Cr, FNA 8). In Ky. there is a possible poor coll. from CART (KY): C. Weller, 3 Aug 1961, limestone ledge, roadside. The coll. is fruiting, with relatively short, straight, ascending inflorescence branches, and basal offshoots bearing a few small glaucous young leaves.