Pichi Sermolli, R.E.G. 1977: Tentamen Pteridophytorum genera in taxonomicum ordinem redigendi. Webbia 31: 313–512.
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| Pichi Sermolli, R.E.G. 1977: Tentamen Pteridophytorum genera in taxonomicum ordinem redigendi. Webbia 31: 313–512. |