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Research and Conservation in Southern Sonora, Mexico

Koeberlinia spinosa (crucifixion thorn)

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Koeberlinia spinosa in Ironwood Forest National Monument, AZ. The plants at right are a clonal colony. Photos: Mark Dimmitt

Thorn-branches of Koeberlinia spinosa. Photo: Mark Dimmitt

Koeberlinia spinosa in flower near Puerto Lobos, Sonora. Photo: Mark Dimmitt