Cheilanthes tomentosa Link
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
Species Description - Rhizome short, erect, multicipital, its scales linear, 5–6 mm, brown with a dark central band; lvs tufted, 15–40 cm, the 5–11 cm petiole evidently shorter than the blade, hirsute-lanuginose and with intermingled linear-subulate white scales to ca 0.1 mm wide; blade lance- linear or lanceolate, 1.5–4 cm wide, tripinnate, green and sparsely villous above, densely rusty-woolly beneath, tripinnate, the rachis woolly and with intermingled slender, hair-like scales like those of the petiole, but these scarcely or not at all extending to the costae and lower surface; pinnae 15–25 pairs, lance-ovate; pinnules 6–11 pairs; ultimate segments obovate or suborbicular, typically 1–2 times as long as wide, decurrent, the margins inrolled and with a pale, scarious edge; 2n=87 (triploid). Rock ledges in subacid soil; w. Va., W.Va., and Ky., s. and w. to Ga., Ark., Tex., and Mex.; reported from Pa. (C. lanosa sensu Fernald, misapplied)