Crossosoma bigelovii

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Crossosoma bigelovii
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Crossosomatales
Family: Crossosomataceae
Genus: Crossosoma
Species: C. bigelovii
Binomial name
Crossosoma bigelovii

Crossosoma parviflorum Rob. & Fern.

Crossosoma bigelovii, known by the common name ragged rockflower, is one of only a few species in the flowering plant family Crossosomataceae.

It is native to the Mojave, Chihuahuan, and Sonoran Deserts of North America. It has been reported from the states of Arizona, California, Nevada, Baja California, Chihuahua, and Sonora.[1]


Ragged rockflower is occasionally used as an ornamental plant in habitat gardens and natural landscaping. It can be grown from seed in well-drained soil for a desert butterfly garden. It is a difficult plant for the average homeowner to grow, as over-watering will kill it.[2]


  1. ^ Mason, C.T. Crossosomataceae, Crossosome Family. Journal of the Arizona-Nevada Academy of Science 26:7-9.
  2. ^ Soule, J.A. 2012. Butterfly Gardening in Southern Arizona. Tierra del Sol Press. Tucson, AZ.

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