Research and Conservation in Southern Sonora, Mexico

Guaiacum coulteri (guayacán)

Guaiacum coulteri east of Hermosillo, Sonora. the trees are often flat-bottomed because the foliage is highly palatable to livestock and deer. Photo: Mark Dimmitt


Two above images: Guaiacum coulteri flowering in May near Alamos, Sonora. Photos: Left: S.A. Meyer; right: Robert W. Harrill

Two above images: Flowers of Guaiacum coulteri grown at the Desert Museum in Tucson, AZ. This species is rare in cultivation because it grows very slowly and is frost-sensitive. The shrub on the left is six feet tall at 30 years of age. Photos: Mark Dimmitt

Fruit of Guaiacum coulteri. The red arils attract birds that disperse the seeds. Photo: S.A. Meyer