Published in Madroño, in 2001, in volume 48, issue 4, pages 236-252

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

Published in Journal of The Botanical Research Institute of Texas, in 2011, in volume 5, issue 2, pages 421-426

Created: 2015-12-01, modified: 2015-12-01

Published in The Wilson Bulletin, in 1995, in volume 107, issue 2, pages 251-257

Created: 2016-12-04, modified: 2016-12-04