| belgium | | ophioglossum vulgatum | species | 1 | 0 |
| canada | british columbia | ophioglossum pusillum | species | 1 | 0 |
| china | guizhou | ophioglossum thermale | species | 1 | 0 |
| china | jiangsu | ophioglossum parvum | species | 4 | 0 |
| china | jiangsu | ophioglossum petiolatum | species | 3 | 0 |
| china | sichuan | ophioglossum vulgatum | species | 3 | 0 |
| china | tibet | ophioglossum petiolatum | species | 6 | 0 |
| china | yunnan | ophioglossum nudicaule | species | 4 | 0 |
| china | yunnan | ophioglossum petiolatum | species | 24 | 0 |
| costa rica | san jose province | ophioglossum crotalophoroides | species | 6 | 0 |
| finland | | ophioglossum vulgatum | species | 2 | 0 |
| french polynesia | windward islands | ophioglossum falcatum | species | 2 | 0 |
| french polynesia | windward islands | ophioglossum pendulum | species | 2 | 0 |
| gabon | moyen-ogooue province | ophioglossum reticulatum | species | 5 | 0 |
| india | | ophioglossum costatum | species | 4 | 0 |
| india | | ophioglossum gramineum | species | 3 | 0 |
| india | | ophioglossum petiolatum | species | 3 | 0 |
| india | | ophioglossum reticulatum | species | 3 | 0 |
| india | west bengal | ophioglossum petiolatum | species | 1 | 0 |
| indonesia | bali province | ophioglossum reticulatum | species | 1 | 0 |
| italy | tuscany region | ophioglossum cf. azoricum lp-2014 | species | 1 | 0 |
| italy | tuscany region | ophioglossum vulgatum | species | 1 | 0 |
| japan | | ophioglossum pendulum | species | 1 | 0 |
| japan | | ophioglossum thermale var. thermale | varietas | 1 | 0 |
| japan | fukushima prefecture | ophioglossum vulgatum | species | 1 | 0 |
| japan | osaka prefecture | ophioglossum petiolatum | species | 1 | 0 |
| kenya | | ophioglossum costatum | species | 1 | 0 |
| kenya | coast province | ophioglossum costatum | species | 1 | 0 |
| madagascar | | ophioglossum pendulum | species | 1 | 0 |
| mexico | puebla | ophioglossum crotalophoroides | species | 1 | 0 |
| mexico | sonora | ophioglossum engelmannii | species | 1 | 0 |
| micronesia | | ophioglossum falcatum | species | 1 | 0 |
| new caledonia | | ophioglossum pendulum | species | 1 | 0 |
| peru | amazonas region | ophioglossum crotalophoroides | species | 1 | 0 |
| solomon islands | | ophioglossum pendulum | species | 1 | 0 |
| taiwan | | ophioglossum petiolatum | species | 1 | 0 |
| thailand | | ophioglossum costatum | species | 1 | 0 |
| thailand | | ophioglossum nudicaule | species | 1 | 0 |
| thailand | | ophioglossum petiolatum | species | 11 | 0 |
| thailand | chiang mai province | ophioglossum petiolatum | species | 15 | 0 |
| thailand | lamphun province | ophioglossum petiolatum | species | 6 | 0 |
| thailand | loei province | ophioglossum reticulatum | species | 6 | 0 |
| thailand | sa kaeo province | ophioglossum costatum | species | 6 | 0 |
| thailand | ubon ratchathani province | ophioglossum petiolatum | species | 5 | 0 |
| thailand | ubon ratchathani province | ophioglossum thermale | species | 1 | 0 |
| united states | | ophioglossum petiolatum | species | 2 | 0 |
| united states | arkansas | ophioglossum engelmannii | species | 1 | 0 |
| united states | hawaii | ophioglossum petiolatum | species | 1 | 0 |
| united states | texas | ophioglossum engelmannii | species | 1 | 0 |
| united states | virginia | ophioglossum pycnostichum | species | 3 | 0 |
| vanuatu | tafea province | ophioglossum reticulatum | species | 1 | 0 |
| vietnam | dak lak province | ophioglossum petiolatum | species | 4 | 0 |