SYSTEMATIC ANATOMY AND PHYLOGENY OF MEXICAN COLUMNAR CACTI

[51] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P214

[52] BUXBAUM F, 1975, KAKTEEN FRANCKHSCHE

[53] BUXBAUM F, 1962, KAKTEEN FRANCKHSCHE

[54] BUXBAUM F, 1970, KAKTEEN FRANCKHSCHE

[55] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P154

[56] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P196

[57] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P230

[58] BUXBAUM F, 1969, KAKTEEN FRANCKHSCHE

[59] BUXBAUM F., 1953, MORPHOLOGY CACTI

[60] BUXBAUM F, 1972, KAKTEEN FRANCKHSCHE

[51] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P214

[52] BUXBAUM F, 1975, KAKTEEN FRANCKHSCHE

[53] BUXBAUM F, 1962, KAKTEEN FRANCKHSCHE

[54] BUXBAUM F, 1970, KAKTEEN FRANCKHSCHE

[55] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P154

[56] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P196

[57] BUXBAUM F, 1964, KAKTEEN SUKK, V15, P230

[58] BUXBAUM F, 1969, KAKTEEN FRANCKHSCHE

[59] BUXBAUM F., 1953, MORPHOLOGY CACTI

[60] BUXBAUM F, 1972, KAKTEEN FRANCKHSCHE