| Name | Selaginella arenicola subsp. riddellii (Van Eseltine) R. M. Tryon |
| Authorship | (Van Eseltine) R. M. Tryon |
| Rank | Subspecies |
| Placed in | Selaginella arenicola Underwood |
| GUID | urn:lsid:ipni.org:names:231983-2 |
| Holdings | 39 Specimens held in the Harvard University Herbaria identified as Selaginella arenicola subsp. riddellii (Van Eseltine) R. M. Tryon |
| Identification made in | [no date] (20), 1952 (14), 1964 (1), 1965 (2), 1970 (2) |
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