I could not finde the rose you want, but if it is for remberance , there is one called thinking of you, a lovly red rose,and rember me, a lovly bronze irradiated with salmon and goald,they are both fragrance,as alternatives, they are at www. fryers.co.uk hope you find what you are looking for.

This site says it has 'The Florence Rose' www.TheRedRoseSociety.org. Good luck as I suspect there isnt one and its a come on?

there is a chrysanthemum 'Florenece' ,an osteospermum 'sunny florence' and an astrantia that i know off. Try googling 'plant varieties florence.'
welcome to GoY to Cb1