Published in Hedwigia, in 1914, in volume 54, pages 264-266

Created: 2025-10-15, modified: 2025-10-15

Published in Hedwigia, in 1913, in volume 53, pages 156-160

Created: 2025-10-15, modified: 2025-10-15

Published in Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie, in 1908, in volume 42, pages 49-177

Created: 2015-11-13, modified: 2015-11-13