Wikispecies has an entry on:

Cotylidia

Note: Cotylidia is placed under Agaricomycetes incertae sedis by Index Fungorum, under Podoscyphaceae by NCBI and under Repetobasidiaceae by en.wikipedia.

• Included species (for Index Fungorum,  21 January 2014):

C. aurantiaca, C. carpatica, C. decolorans, C. diaphana, C. guttulata, C. harmandii, C. komabensis, C. marsicana, C. muscigena, C. pannosa, C. pusiola, C. undulata

• Included species (for NCBI,  21 January 2014):

C. aurantiaca, C. diaphana, C. pannosa, C. undulata

• Index Fungorum link: Cotylidia P. Karst. 1881 (+species list) (+ MycoBank)
• NCBI link: Cotylidia }