Echinoagave, Paleoagave, Paraagave, oh my
As Bob Dylan once said, “There is nothing so stable as change.” That’s true for a lot of things, but especially for taxonomy. Many people hate it when the botanical names they’ve painstakingly learned become something else. Others embrace it as a corollary of progress. Me, I’m OK with it as long as there’s a good reason. A big brouhaha ensued when in 2014 five new genera were split off the genus Aloe : Aloiampelos, Aloidendron, Aristaloe, Gonialoe , and Kumara . This wasn’t some random flight of fancy, but the result of molecular studies that shed new light on the evolutionary origin of what we call aloes. Now something similar is happening to agaves, although on a smaller scale. A couple of months ago (January 2024), a team of Mexican botanists published an article titled “New Genera and New Combinations in Agavaceae” in which they propose three new genera based on genetics, morphology, and the estimated time they diverged from the common ancestor of all agaves. I know, this is stuf...