R. gemmata:

ECOCH 4054 (holotype, dig.), ECOCH 1468 (1 paratype, C&S, dig.), ECOCH 3145 (1 paratype, dig.), Mexico, Quintana Roo, nameless cenote 12 km N of Leona Vicario; UANL 15046 (4 paratypes), Mexico, Quintana Roo, Laguna Leona Vicario .