Macowanites candidus, a new combination for Hydnangium candidum Tul. et C. Tul.

Macowanites candidus, a new combination for Hydnangium candidum Tul. et C. Tul. As a result of the study of type herbarium material of Elasmomyces mattirolianus Cavara,
Hydnangium candidum Tul. et C. Tul., Octaviania moravica Velen., Secotium krjukowensis Bucholtz
and S. Michailowskianum Buchol tz, only two species are recognized, viz. Macowanites mattirolianus
(Cavara) T. Lebel et Trappe and Macowanites candidus (Tul. et C. Tul.) J.M. Vidal comb. Nov. (=0.
moravica, =S. krjukowensis, =S. Michailowskianum). With the addition of the study of recent collections, and an exhaustive biblio graphical research , the two spec ies are redescribed and compared; at
the same time, new data regarding its ecology, phenology, and distributi on in Europe are provided. Also, a key to european spec ies of the genus Macowanites Kalchbr. is fumished.