Cleistocactus morawetzianus var. pycnacanthus Rauh & Backeb., Descr. Cact. Nov. 1: 17. 1957 ["1956"]
Cleistocactus morawetzianus var. pycnacanthus, Descr. Cact. Nov. 1: 17. 1957 ["1956"]
is basionym for Cleistocactus pycnacanthus, Kakteenlex.: 88. 1966
Type: Peru, dept. Ayacucho, near Ayacucho, alt. 2700 m, 1954, W. Rauh K 75 http://scriptorium.cos.uni-heidelberg.de/entry/?251