Guiggi A., Airampoa picardoi, the correct name for Opuntia picardoi, Haseltonia, 2007, 13:89-90, doi: 10.2985/1070-0048(2007)13[89:APTCNF]2.0.CO;2
The publication corrects an earlier attempt to validate Tunilla picardoi following a change in the rules on typification. It documents the author's nomenclatural position in 2007.