TPB/ Tetraploid Regals

In The Pelargonium Breeder (Vol.1,No.1, 1973), mention is made of two Regals
that were determined to be  tetraploid, and have the very unusual chromosome
number of 2n=36. The plants were 'Joan Fontaine' and 'Orchid Edith North'.
Does anyone know if there are any tetraploid Regals in existance today?

Ed
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