From Kakster. One of two clones I received from him. "Seeds originally collected by the Nazi cactlogist Friedrich Ritter who explored remote and dangerous areas of South America, living with impoverished Indians and writing taxonomic descriptions of cacti. As a young man, he fled Mexico to avoid paying pickax-wielding workers when his family's silver mine ran out of silver. He returned to his Fatherland to enlist in the army during World War II. After the war, he wrote books on cactus and philosophy preaching ""the uselessness of sympathy"". He died in the Canary Islands."

This came to me from MSS as Trichocereus scopulicola FR991.

Cuttings of this Trichocereus scopulicola FR991 are sometimes available at Cactus Affinity. 

This came to me as “Trichocereus scopulicola long spine” from MSS. 

A special clone of variegated scopulicola grown and selected by Gary Wilson.