I took a piece of FEL with me a few years ago when I was going to San Juan Bautista. I held my piece against the plant there and couldn't find any difference. I'm pretty sure all the old climbers in that part of the park came from Roses of Yesterday, with the clincher being that the rose they had labeled a multiflora turned out to be Laure Davoust, which Francis Lester had found and sold under the name Marjorie Lester.