Myriopteris clevelandii, formerly known as Cheilanthes clevelandii, is a species of lip fern known by the common name Cleveland's lip fern. It is native to southern California and Baja California in Mexico. The leaf is divided into small, bead-like segments densely covered with scales beneath. In M. clevelandii, some of these scales are reduced to hairlike structures, which help distinguish it from the closely related M. covillei. It is usually found growing on exposed rock, particularly igneous rock. Description The rhizomes are horizontal and range from in diameter. The leaves are closely or broadly spaced along them. The rhizome bears persistent linear-lanceolate scales, which are dark brown or brown to red-brown in color and shiny. The scales may be of a uniform brown color, or bear a dark central stripe with paler edges. The margins of the scales are entire or erose to slightly toothed with teeth well-spaced. The scales are straight or slightly twisted and strongly appressed (pressed against the rhizome). The fronds arise from the rhizome in clusters or as somewhat scattered individual leaves. Unlike many ferns, they do not emerge as coiled fiddleheads (noncircinate vernation). When mature, they are long. The stipe (the stalk of the leaf below the blade) makes up about half the length of the frond, measuring long. The stipe is shiny, rounded, and dark to light brown, covered with -long hairs and filiform (threadlike) scales that are gray to red-brown in color. The covering is lost as the frond ages. The stipe is typically less than wide, sometimes up to . The leaf blades are oblong-lanceolate to ovate and tetrapinnate (cut into pinnae, pinnules, pinnulets, and divisions of pinnulets) at the base. They are typically long and broad. The rachis (leaf axis) is rounded, rather than grooved, on its upper surface, and there is no distinct joint where the pinnae attach to the rachis, the dark color of the latter continuing into the base of the costa (pinna axis). 10 to 12 pairs of pinnae are present in Mexican specimens, somewhat more in some Californian material. Each pinna is equilateral in shape, and the lowest pair of pinnae is not significantly enlarged compared to the others. The upper surface of the costae is green along much of their length. The lower surface of the costae is covered in conspicuous broad scales. These are ovate-lanceolate to broadly deltate in shape, and deeply cordate (notched