when you named P. randiflora it is a P. grandiflora species I suppose
for these subsp. genus you have :
P. grandiflora subsp. grandiflora
P. grandiflora subsp. rosea
P. grandiflora subsp. grandiflora f. pallida
P. grandiflora subsp. grandiflora f. chionopetra
if you want some P.grandiflora subsp grandiflora buds free tell me by PM
jeff