I found a number of references to Washingtonias on la Croisette in Cannes, including this one
http://cannes.media.tourinsoft...
which says "The Croisette's symbolic species are Washingtonia Californian palm trees and Phoenix date palms." The plants in the picture are not date palms.
A photographic example:
https://stock.adobe.com/ar/ima...
I don't think it's particularly easy to tell the two relevant species of Washingtonia apart without seeing their bases, but the database has an entry for the genus, so that would work.
I will let Stefan decide if he has an opinion on this.
