Publication: Proc. Amer. Acad. Arts. 29: 298. 1894.
selected vouchers: WTU
Notes: Extripated in WA, WDNR [KZ]. FNA: "Arenaria paludicola is federally listed as endangered, and now is known only from a few sites in San Luis Obispo County; urban development and resultant habitat conversion have impacted it significantly. Historical collections of A. paludicola are known from other areas of the California coast and from Washington."