Darkera abietis H.S. Whitney, J. Reid & Piroz., Canadian

Crous, Pedro W., Müller, Michael M., Sánchez, Romina M., Giordano, Lucrecia, Bianchinotti, M. Virginia, Anderson, Freda E. & Groenewald, Johannes Z., 2015, Resolving Tiarosporella spp. allied to Botryosphaeriaceae and Phacidiaceae, Phytotaxa 202 (2), pp. 73-93 : 82

Darkera abietis H.S. Whitney, J. Reid & Piroz., Canadian Journal of Botany 53: 3052 (1975)

Synonym: Tiarosporella abietis H.S. Whitney, J. Reid & Piroz., Canadian Journal of Botany 53: 3055 (1975)

Note:— This taxon is known to occur on Abies spp., with conidia being (29–)36–42 × (7.5–)8–9 μm ( Karadžić 1998). A detailed description and illustration is provided by Nag Raj (1993). Because T. abietis is not congeneric with the genus Tiarosporella , we propose to use the name of the sexual morph, Darkera , for D. abietis and other taxa congeneric with it ( Whitney et al. 1975). The asexual morph of Darkera resembles species of Phacidium (= Ceuthospora, Crous et al. 2014 ), but the latter tends to have multilocular conidiomata with several semi-papillate ostioles, smaller conidia and branched conidiophores. Species of Darkera are endophytic, and possibly weakly pathogenic on conifers ( Müller & Hantula, 1998).