Crucifixion Thorn
Crucifixion Thorn Exhibit, 1995
Aptly named for its cross-shaped spines. Also known as castela, corona-de-Cristo, rosario. A large shrub that can grow to 12′. Named for its grayish green, smooth rigid twigs, up to 8″ long and about 1/4″ in diameter that are tipped by sharp spines.
- Blooms during June and July.
- Has male and female flowers on separate plants; female flowers followed by a ring composed of 5-10 flattened 1-seeded segments which can survive for years.
- Found at 500 to 2,000′ elevation.
- Plants are native mostly to the southwestern part of Arizona and are less common in the foothills area.
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