Descriptions of and comments on some species of Octospora and Kotlabaea (Pezizales, Humariaceae)
After examining type or authentic specimens, the author provides detailed descriptions and illustrations of twenty species of Octospora. These are: O. purpurea, O. plumbeo-atra, O. indica, O. orthotrichi, O. kanousae, O. wrightii, O. insignispora, O. leucolomoides, O. humosa, O. peckii, O. musci-muralis, O. tetraspora, O. rubens, O. semiimmersa, O. subhepatica, O. euchroa, O. limbata, O. waterstonii, O. phyllogena, and O. convexula. Comments on seven further species, O. pumilata, O. moravecii, O. ithacaënsis, O. collinata, O. insolita, O. leucoloma, and O. decalvata are provided. Twenty eight species of Octospora are keyed out. Kotlabaea differs from Octospora in having ellipsoid, eguttulate ascospores and being non-byrophilic. Kotlabaea deformis, K. spaniosa, and K. alutacea, the latter 2 newly combined, are described and commented.