The skin disease Pityriasis (tinea) versicolor was shown to be due to the Microsporon furfur by Eichstedt in 1846.
IRIS versicolor imberbis foliis ensiformibus, scapo tereti flexuoso, germinibus subtrigonis.
Versicolor is a good name for this bright Cholla since it means “variegated or diversified in color.”
Versicolor means changing color, referring to the different bands of color.
Our plant is the picta of Miller, and the versicolor of Miller is, we believe, the sibirica of Linnæus.