They generally have five valvate sepals, most frequently basally connate, with five imbricate petals. Sepals 5, gamosepalous, tube short, 5 lobed, obtuse, glabrous, imbricate, odd sepal is anterior. Head scales small, subequal, feebly imbricate, smooth or weakly keeled. The 4- or 5-part calyx is downy and imbricate in bud. The calyx is small, four-lobed, imbricate in the bud, acute, margins ciliate, persistent. Sepals are 4-12, distinct to connate, imbricate, and often petal-like. Buds are ovoid, acutish, with many imbricate, dark brown scales. Their bodies are covered with keeled scales that are imbricate (overlapping) with apical pits. The head is thickly covered with keeled, imbricate scales. The body is laterally compressed, and is covered with imbricate keeled scales. Abdominal scales small, smooth, roundish-hexagonal, imbricate. On the dorsal side of the tail, the scales are acute, keeled, imbricate, and flattened. The midbody is covered with 21 to 25 longitudinal rows of imbricate (overlapping) dorsal scales. Lizard scales vary in form from tubercular to platelike, or imbricate (overlapping). The lower slope comprises imbricate thrust slices that form ridges.