Published in Annals of the Missouri Botanical Garden, in 1994, in volume 81, pages 160-179
Created: 2010-01-08, modified: 2015-12-16![](https://www.biodiversitylibrary.org/pagethumb/4516517,60,60)
Published in Berichte der Deutschen Botanischen Gesellschaft, in 1919, in volume 37, pages 83-96
Created: 2017-10-18, modified: 2017-10-18![](https://www.biodiversitylibrary.org/pagethumb/55290771,60,60)
Published in Muelleria, in 2002, in volume 16, pages 65-70
Created: 2018-01-28, modified: 2023-02-16