V.  Giavarini, Purvis, O. W., and James, P. W., ?Chaenotheca?, in Lichens of Great Britain and Ireland, London: British Lichen Society, 2009, pp. 297-303.

L.  Tibell, ?Photobiont association and molecular phylogeny of the lichen genus Chaenotheca?, Bryologist, vol. 104, pp. 191-198, 2001.

G.  Amo and Burgaz, A. R., ?Sclerophora peronella new to the Iberian Peninsula?, Lichenologist, vol. 36, pp. 265-267, 1999.

Y. -j Yao and Spooner, B. M., ?Roesleriaceae, a new family of Ascomycota, and a new species of Roeslerina?, Kew Bulletin, vol. 54, pp. 683-693, 1999.

L.  Tibell, ?Caliciales?, Nordic Lichen Flora, vol. 1, pp. 20-94, 1999.

V.  Giavarini and Purvis, O. W., ?Sclerophora?, in Lichens of Great Britain & Ireland, London: British Lichen Society, 2009.