of species formerly placed in Cheilanthes. One of these was C. clevelandii, which thus became Myriopteris clevelandii. In 2018, Maarten J. M. Christenhusz transferred the species to Hemionitis as H. clevelandii, as part of a program to consolidate the cheilanthoid ferns into that genus. Further molecular studies in Myriopteris demonstrated the existence of three well-supported clades within the genus. M. clevelandii belongs to what Grusz et al. informally named the covillei clade. Members of the "core covillei" clade, including M. clevelandii, have leaves finely divided into bead-like segments. Within this clade, M. clevelandii is sister to M. covillei. Distribution and habitat The fern is native to southern California, specifically the Peninsular Ranges and several of the northern Channel Islands, and to northern Baja California, Mexico. It is found in a variety of rocky, exposed habitats, including chaparral, on slopes and ledges, or at the bases of boulders and in crevices. It usually prefers igneous rocks. It is found from in elevation. Conservation and ecology Myriopteris clevelandii is classified as globally vulnerable by NatureServe. It faces few distinct threats, but its natural range is limited. Notes and references References Works cited External links Image of the holotype of the species UC Photos gallery — Cheilanthes clevelandii clevelandii Ferns of California Ferns of Mexico Flora of Baja California Natural history of the California chaparral and woodlands Natural history of the Channel Islands of California Natural history of the Peninsular Ranges Plants described in 1875