A genus of about 45 species, 44 in the Western Hemisphere and 1 in Africa. As outlined in Grusz & Windham (2013), Myriopteris is not closely related to Cheilanthes sensu stricto.
ID notes: Myriopteris includes a diversity of small, rock outcrop ferns with (in our region) lance-shaped leaves that are 2-4 pinnate-pinnatifid, the ultimate segments or lobes often < 2 mm wide. While many are conspicuously hairy and appear grayish or bluish from a distance, some are smooth (see key).
Ref: Christenhusz, Fay, & Byng (2018); Gastony & Rollo (1998); Grusz & Windham (2013); Grusz et al. (2014); Lellinger (1985); Tryon, Tryon, & Kramer In Kramer & Green (1990); Windham & Rabe (1993) In Flora of North America Editorial Committee (1993b). Show full citations.