Published in Hedwigia, in 1901, in volume 40, pages 304-322

Created: 2025-11-02, modified: 2025-11-02

Published in Hedwigia, in 1901, in volume 40, pages 129-131

Created: 2025-11-02, modified: 2025-11-02

Published in Annals of the Missouri Botanical Garden, in 1931, in volume 18, pages 489-508

Created: 2010-01-08, modified: 2015-12-16