Confusing quartet of the plant world
- Desert Magazine, p.13-17, 1953 .
Southwesterners, in general recognize most menbers of the cactus family, by touch if not by sight, but there is a confusing quartet of common and widely distributed desert plants which so closely resemble one another, at least super frially, that even long-time residents of the Southwest still fail to differentiate between them, particulary when encountered in unexpected places.