Melampsora , comparison of urediniospore ornamentation in SEM: a. Melampsora arctica, spines rather densely arranged; b. M. farinosa, spines less densely arranged as in M. arctica; c. M. laricis-epitea f.sp. laricis-retusae; the spines in c are intermediate between a and b in density; (a–c by Paul Blanz).

 
 
  Part of: Zwetko P, Scheuer C, Krisai-Greilhuber I, Blanz P (2024) Rust fungi of Austria 1 (excluding Puccinia s.l. and Uromyces): Melampsoraceae and related families, Gymnosporangiaceae, Ochropsoraceae, Phragmidiaceae, Tranzscheliaceae, and Genera incertae sedis. Biosystematics and Ecology 3: e123592. https://doi.org/10.1553/biosystecol.3.e123592