Published in Sida, Contributions To Botany, in 1986, in volume 11, issue 3, pages 318-324

Created: 2015-12-02, modified: 2015-12-02

Published in Madroño, in 1998, in volume 45, issue 2, pages 101-109

Created: 2016-02-15, modified: 2016-07-07

Published in Bollettino Malacologico, in 1982, in volume 18, issue 5-6, pages 107-128

Created: 2016-06-27, modified: 2016-06-27

Published in Bollettino Malacologico, in 1988, in volume 24, issue 9-12, pages 243-260

Created: 2016-06-27, modified: 2016-06-27

Published in Spixiana, in 1986, in volume 9, pages 117-141

Created: 2010-10-21, modified: 2011-06-21