Endococcus exerrans Nyl.

van den Boom, Pieter P. G., Clerc, Philippe & Ertz, Damien, 2015, New records of lichens and lichenicolous fungi from La Gomera (Canary Islands, Spain), including the new species: Usnea boomiana P. Clerc, Candollea 70 (2), pp. 165-177 : 173

Endococcus exerrans Nyl.

Notes. – Several species of this genus are known from the Canary Islands ( HERNANDEZ-PADRON & PÉREZ-VARGAS, 2010), with the exception of this taxon. It was neither mentioned from Madeira ( CARVALHO et al., 2008) nor from the Azores ( GABRIEL, 2015). This taxon can be easily mistaken for E. rugulosus Nyl. which has ascomata of 0.2-0.3 mm and ascospores of 12-22 × 5-8 µm, broadly ellipsoid. Our specimen has ascomata of 0.05-0.1 mm and ascospores of 15-20 × 5-6 µm, fusiform.

Material examined. – 3, s, Boom 45911, on Rhizocarpon sp .