The Cactaceae : descriptions and illustrations of plants of the cactus family /
Britton, Nathaniel Lord,1859-1934.
Rose, J. N.(Joseph Nelson),1862-1928.
Washington, D.C. : Carnegie Institution of Washington,
1919-23.
"Corrections and additions to volume I-III": 4, p. 251-290.
Includes indexes.
Cactus.