Species Notes: The name, "pectinatus var. coahuila" has never been published and is therefore not a valid name. It is believed with good reason that plants with this name in cultivation is the result of the locality being mistaken for a variety. In other words, plants or seeds that were labled "Coahuila" actually meant those collected from the Mexican state of Coahuila de Zaragoza, but was misinterpreted as variety coahuila.
I have left this name here with this data so that it may be found in searches along with this corrective note.
This icon appears next to images that have been 3rd party verified. Click Here to learn more. Click any picture below to enlarge.