I agree with Tim, One clone.... lots of different growing conditions. Maybe a few mislabeled plants perhaps?
The plant was hybridized by Dick Wright it was named for Doran Black of Blacks house of cactus in Scranton CA....long gone sadly both the man and the plant store.
Mad at Grigsby sold a bunch as Dorian Black....I do not know why, maybe someday she can fill us in but the mans name was Doran. So you can correct your labels for the sake of the gentleman for whom it is named.
The only thing I can think of is Dorian Gray was more popular and Doran is an unusual name.
One of my early hybrids Sean Red was a take on this plants name. Sean for my son and red for the strange red teeth.
Despite the report that appeared in San Marcos growers page that said I used this plant in Christmas Carol....It was the Madagascarine species ....divaricata and descoignsii among others on this one. Speculation is a funny thing! Asking is easier at least while I am here!
Kelly G
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