Muilla coronata, Acorn Training Area, Acorn Hill, Twenty-nine Palms, Marine Corps Air Ground Combat Center, San Bernardino County
Muilla clevelandii, Peninsular ranges San Ysidro Mountains: SE side of Otay Mtn., western Marron Valley, S of BM 838, ca 1/2 km N of Mexican border on slope above Tijuana River, San Diego County
