"Habranthus robustus" are commonly sold as "Zephyranthes robusta" by merchants, an incorrect synonym. Due to having the same common names, it is also frequently confused with other 'pink rain lilies' - namely "Zephyranthes rosea" and "Zephyranthes carinata" (also sold under the name "Zephyranthes grandiflora"). The three species are often mislabeled, but "H. robustus" is easily recognizable from the other two by its larger, more strongly bent (and often asymmetrical), paler pink flowers. "H. robustus" also have leaves covered with a fine grayish waxy coating (glaucous) in contrast to the leaves of "Z. carinata".