Flechtensystematische Studien I. Die Flechtengattungen Rhabdopsora Müll. ArgPublished in Hedwigia, in 1917, in volume 59, pages 301-306Fungi imperfecti. Beiträge zur Kenntnis derselbenPublished in Hedwigia, in 1917, in volume 59, pages 236-284
Fungi imperfecti. Beiträge zur Kenntnis derselbenPublished in Hedwigia, in 1917, in volume 59, pages 236-284