It is a nice plant, Ento.
I looked through the Reppenhagen field number list and found that Repp. 1218 is melanocentra. It could be simply an error in writing. It is the only field number for melanocentra that could be made to look like 1215 through a writing mistake.
I can't find mention of var. rosea in Reppenhagen's books though.
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Chris43, moderator