Appendix. Specimens examined.

MEXICO: BAJA CALIFORNIA SUR: Mpio. San José del Cabo. San José del Cabo, T.S. Brandegee 83 (UC-Holotype); Sand Dunes, Los Frailes Bay, Chambers 865 (MEXU; UC); South of Los Frailes Bay, 23º10'51.52"N, 109º28'43.07"W, Dertien 509 (DEK); Dunas, "Las Vinoramas", Carretera San José del Cabo — La Ribera, 23°10' N; 109°31' W., elev. 5 m., Dominguez L. 698 (HCIB); Playa Boca de La Vinorama, 23°12' N, 109°27' W, Dominguez L. 756 (HCIB); Cabo Pulmo, a 40 km de B. Vista, elev. 10 m, Encarnación D. 227 (MEXU); San José del Cabo, C. Grabendörfer s/n, 1899, (UC); Tree to 3 m along arroyo of the Rio Vinorama at Boca de la Vinorama, W. of rd. San José del Cabo — La Ribera, 23º13'10.1" N, 109º27'09.6" W, elev. 12 m., McCauley 433 (MEXU); Tree on N side of small unnamed arroyo N of the Rio Salado, E. of rd. San José del Cabo — La Ribera, Approx. 0.5 km S of Castillo de Arena, 23°17'45.5" N, 109°26'01.9" W, elev. 27 m., McCauley 434 (MEXU); Bahía Los Frailes, Few scarce and scattered trees between 0.25 and 1 km inland from bay along sides of large arroyo, 23°22'57.4" N, 109°25'48.5" W, 10 m., McCauley 435 (MEXU); Few scattered trees along arroyo between Costa Azul and La Joya, 0.5 — 3 km W of the highway San José del Cabo — Cabo San Lucas, 23°01'50.1" N, 109°43'12.7" W, elev. 12 m., McCauley 437 (MEXU); Arroyo que cruza el corredor turístico San José del Cabo — Cabo San Lucas, Ca. Playa Costa Azul. 23°01' N; 109°43' W. elev. 35 m., Pérez Navarro 1288 (HCIB; SD).