Kozlowski, G., Freigang, J., Pasta, S., Guarino, R., Anania, F., Champoud, L., Garfì, G., Gristina, A. S., Marcenò, C., Picone, R. M. and Crisafulli, A. (2025): “Update on the current occurrence of two rare fern species in Sicily (Italy): Dryopteris affinis (Lowe) Fraser-Jenk. and D. robusta (Oberh. et Tavel ex Fraser-Jenk.) P. D. Sell. in the Peloritani Mountains”, Mediterranean Botany, 46(2), p. e99974. doi: https://doi.org/10.5209/mbot.99974.