Synonyms
Harrisia simpsonii Small ex Britton & Rose
Cereus eriophorus var. fragrans (Small ex Britton & Rose) L.D.Benson
Cereus gracilis var. simpsonii (Small ex Britton & Rose) L.D.Benson
Cereus fragrans (Small ex Britton & Rose) Little
Harrisia gracilis var. simpsonii (Small ex Britton & Rose) D.B.Ward
Harrisia eriophora var. fragrans (Small ex Britton & Rose) D.B.Ward