P. quadrifaria x P. vitifolia
Min 8°C 46°F
Passiflora ‘Piresae’ has a stunning flower. Vigorous. Difficult to overwinter. Seen here doing really well in the Princess of Wales Conservatory at Kew Gardens. The name of this hybrid is often misspelt. John Vanderplank has kindly clarified the matter for me. There is only one correct spelling as above as Mrs Pires was a lady!! P. x piresii and other variations are all invalid. Many authors put a space between the “x” (small x in roman) and the “p” P. x piresae, to avoid confusion. This naming format is no longer considered valid for new hybrids, so to distinguish it from a species ‘Piresae’.