Sillia P. Karst., Bidr. Känn. Finl. Nat. Folk 23: 159, 251 (1873)

Index Fungorum number: IF5029; 8 morphological species (Species Fungorum 2020), 3 species with sequence data.

Type species – Sillia ferruginea (Pers.) P. Karst.

Saprobic on dead stems of deciduous trees. Sexual morph: Stroma erumpent through cracks in bark, hemisphaerical, black on the surface, dark yellow internally, becoming rouge in 10 % KOH. Ascomata immersed in stromatic tissues, arising as several layers, globose, coriaceous, black, with cylindrical necks, protruding above the surface of the stroma. Peridium comprising thick-walled, brown cells of textura angularis. Asci 8-spored, unitunicate, narrowly clavate, short pedicellate, with a distinct small apical structure. Ascospores fasciculate, narrowly fusiform, slightly curved, hyaline, with 3–5-transverse septa, sometimes guttulate. Asexual morph: Undetermined.

Notes – Ascospores of Sillia are filiform or acicular, scolecosporous and multi-septate. Rossman et al. (2007) was accommodated Sillia in Sydowiellaceae based on its morphology. De Silva et al. (2009), Kruys & Castlebury (2012) and Senanayake et al. (2017b) placed Sillia in Sydowiellaceae based on phylogeny.


  • Sillia ferruginea