4 b. Drymaria arenarioides subsp. peninsularis (S. F. Blake) J. A. Duke, Ann. Missouri Bot. Gard. 48 (3): 198. 1961.

≡ Drymaria peninsularis S. F. Blake, J. Wash. Acad. Sci. 14 (13): 285. 1924. Type: Mexico. Baja California Sur: Cape Region, Jan. – Mar. 1901, C. A. Purpus 423 (holotype: US [470422/00103356 image!]; isotypes: UC [135816 / UC 135816 image!], MO [3343597 / 144084 image!]) .

= Drymaria johnstonii Wiggins, Proc. Calif. Acad. Sci. ser. 4, 25: 203. 1944. Type: Mexico. Baja California Sur: in crevices of rock on mesa near crest of island, the isthmus, Espiritu Santo Island, 31 May 1921, I. M. Johnston 3972 (holotype: CAS [82814/0002334 image!]) .

Distribution.

Mexico.