Variegated leaved pumilum hybrid

[Cym Ladye]

I am trying to sort out the name of a small pumilum hybrid with stable variegation on the edges of the leaves. Some have said it is Pumilow but in an earlier discussion somewhere, it was said to be something else, which made far more sense, but I cannot remember what it was. The plant in question appears to have no lowianum influence in flower type or plant size. Any help here would be appreciated.