This species is widespread in north-central Mexico with its distribution centered on Tamaulipas. Known in the US as blue Mexican fencepost, this species characteristically has blue-green stems with small black spines. These plants are the cresting version of the typical species and are in various stages of cresting. The flowers are small and greenish-white and are produced in the summer. These plants are rooted cuttings in 4-inch pots.
