Guardian newspaper report ….

“Pollinators don’t just wing it when it comes to finding a sweet treat: the shape, colour, perfume and even electrical charge of flowers are all known to offer clues.

But now researchers say bumblebees also use another floral feature to guide them: how the concentration of a scent varies across the flower’s surface.”

https://www.theguardian.com/science/2018/jun/13/bumblebees-use-perfume-patterns-to-tell-flowers-apart?utm_source=esp&utm_medium=Email&utm_campaign=Lab+notes+2016&utm_term=278201&subid=25664344&CMP=ema-3242

https://research-information.bristol.ac.uk/en/publications/bumblebees-distinguish-floral-scent-patterns-and-can-transfer-these-to-corresponding-visual-patterns(943b7ba6-cae5-4662-96aa-705afc19cdc4).html