| Type | Article |
| Authors(s) | Johnson AK, Rothfels CJ, Windham MD, Pryer KM. |
| Year | 2012 |
| Title | Unique expression of a sporophytic character on the gametophytes of notholaenid ferns (Pteridaceae). |
| Periodical | American Journal of Botany |
| Volume | 99 |
| Page(s) | 1118–1124 |