Stems: with stolons apical on secondary stems and distally on branches. Leaves: with margins recurved proximally, plane distally; distal medial laminal cell walls straight or weakly sinuate. Sexual: condition autoicous. Phenology: Capsules mature spring.
Shaded or open cliff faces and rock outcrops in gorges and canyons, talus, granite boulders, dry rock. low to high elevations (0-1700 m). Ariz., Tex., Mexico (Jalisco, Michoacán, Oaxaca).
Leaf apices are shorter and broader in Braunia andrieuxii than in B. secunda. Braunia andrieuxii appears a paler yellow than B. secunda, and the cells are relatively thinner-walled and moderately porose and smooth at the base.