Listed by Hazelwood's Nursery, Epping, NSW in the 1950s is sometimes listed under its former name 'Impératrice Eugénié' but is now considered best named P. ×belottii Pépin or P.×alato-caerulea although there is uncertainty as to whether the parentage of the latter two species is the same. It was originally described c. 1850 as a hybrid between P. alata C. Curtis from NE Peru and E Brazil and P. caerulea. It produces long-lasting, large, fragrant flowers and no suckers (P. caerulea has suckers).