Type locality: "oriente juxta rivos", restricted by Linnaeus (1766) to "oriente juxta rivos, Hispania", later listed by Thomas (1911a) as "Spain". Cabrera (1914), synonymizing G. peninsulae, further restricted the type locality to "El Pardo, cerca de Madrid" [Spain, El Pardo, near Madrid (40°32'N, 3°46'W)].