Expositio Plantarum in itinere suo indico annis 1893/94 succepto collectarum speciminibusque exsiccatis distributarum, adjectis descriptionibus novarum. Series prima Hepaticarum partem continens
Published in Denkschriften der Akademie der Wissenshaften. Mathematisch-Naturwissenschaftlichen Klasse, in 1899, in volume 67, pages 153-203
Date published:1899