| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Asplenium oligosorum Mickel & Beitel | T. B. Hallberg 1444 06 Oct 1971 | Mexico. Oaxaca. Teotitlán. Mun. de tenango; first half of trail from San Martín Caballero to Tenango. | holotype | 149262 |  |
| Asplenium oligosorum Mickel & Beitel | G. Ingela 95-M23 | Mexico. Oaxaca. San José Tenango Mun. Sierra Mazateca. Dist. Teotitlan. San Martin Caballero. . | 04040331 |  |