A study published in 1995 from Israeli populations of N. tazetta found that different morphs attracted different types of pollinators. One community of N. tazetta that grew in low marshy locations had longer floral tubes and attracted hawkmoths. Higher up in drier locations there were communities of morphs with shorter floral tubes that had attracted bees and flies. I wonder if something similar takes place in Italy, or elsewhere. Reference: J Arroyo, A Dafni. Variations in habitat, season, flower traits and pollinators in dimorphic Narcissus tazetta L.(Amaryllidaceae) in Israel - New Phytologist, 1995 PDF: https://goo.gl/3T21P1/ Travis Owen Rogue River, OR http://www.amateuranthecologist.com/ http://www.pacificbulbsociety.org/