The soils are mostly barren of vegetation .
The soils may host other annuals such as Monolepis pusilla , Mentzelia albicaulis , Cleomella macbrideana , and Phacelia humilis .
The soils are mostly barren of vegetation but may host other annuals such as Monolepis pusilla , Mentzelia albicaulis , Cleomella macbrideana , and Phacelia humilis .