This species was treated as Cheilanthes farinosa in Smith & Mickel Pteridophytes of Mexico. It is perhaps not conspecific with A. farinosa which has a type from Yemen.
Pecluma sp.
I have found several populations of this fern. It's always growing on rocks and there are never larger Pecluma species in the same vicinity. I have not found fertile individuals. Is it Pecluma filicula?
Common name?
I don’t know of one. I guess you could call it the ‘silver-backed lip fern’. Cheilanthoides (including Aleuritopteris) are generally called the ‘lip ferns’, and farinose ferns are often called ‘silver backed’ when the farina is white like in this one.