|🌵 Author(s)||Louis Pfeiffer||🌵 Published in||Enum. Diagn. Cact. 90 (1837)|
Apparently Latin ăqua ‘water’ + Latin caulis ‘stem’ + Latin –ensis, geographical suffix. Perhaps intended as a latinization of Aguascalientes (Spanish aguas calientes ‘hot waters, hot springs’), the name of a Mexican state and its capital. This is a synonym of Myrtillocactus geometrizans, which is native to that state.