Published in Madroño, in 1991, in volume 38, issue 2, pages 144-146

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

Published in Phytologia, in 1996, in volume 81, issue 2, pages 69-102

Created: 2016-05-04, modified: 2016-05-06

Published in Madroño, in 1988, in volume 35, issue 3, pages 278-280

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