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SUMMARY
Ten species of Taphrina are known on American ferns, as follows:
| 1. | Taphrina lutescens Rostr. on Thelypteris thelypteris (L.) Nieuwl. Minnesota (?). Maine, New York. | ||||
| 2. | Taphrina californica on Dryopteris arguta (Kaulf.) Wats. California. | ||||
| 3. | Taphrina gracilis on Dryopteris marginalis (L.) A. Gray. New York. | ||||
| 4. | Taphrina fusca Giesenhag., on Dryopteris spinulosa (Muell.) Kuntze (new host), New Brunswick, New Hampshire, West Virginia, Vermont. | ||||
| 5. | Taphrina filicina Rostr. on Dryopteris spinulosa (Muell.) Kuntze. Vicinity of Ithaca, New York. | ||||
| 6. | Taphrina Polystichi on Polystichum acrostichoides (Michx.) Schott. Eastern North America. | ||||
| 7. | Taphrina Faulliana on Polystichum munitum (Kaulf.) Presi. Rhododendron, Oregon. | ||||
| 8. | Taphrina Cystopteridis on Cystopteris fragilis (L.) Bernh. Indiana, Kansas, Wisconsin. | ||||
| 9. | Taphrina Hiratsukae Nishida, on Onoclea sensibilis L. Ontario, New York, Pennsylvania. | ||||
| 10. | Taphrina Struthiopteridis Nishida, on Pteretis nodulosa (Michx.) Nieuwl. Wisconsin. | ||||