Verbatim text: Clausen, R. T. 1940. Studies in the Crassulaceae: Villadia, Altamiranoa, and Thompsonella. Bull. Torrey Bot. Club 67: 195–198.
Author: Clausen, R.T.
Year: 1940
Title: Studies in the Crassulaceae: Villadia, Altamiranoa, and Thompsonella
Journal: Bull. Torrey Bot. Club
Volume: 67
Pages: 195–198
PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/2480876