Gymnosporangium spp., types of teliospores. a. G. tremelloides, spores ellipsoid, spore ends roundish; b. G. cornutum, spores smaller and often biconical; c. G. clavariiforme, spores fusiform; (a–c from Dietel 1928: 75, with permission from Duncker & Humblot GmbH).

 
 
  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