Preprint! w/ C. Strullu-Derrien,R.Wightman,L.P.McDonnell, G.Evans,F.Fercoq,P.Kenrick & A.Ferrari An ancient plant symbiotic fungus with distinct features identified through advanced fluorescence & Raman imaging @slcuplants.bsky.social @nhm-london.bsky.social Cambridge Graphene Centre @mnhn.fr