Hi Jane, Photos on CalPhotos show that there are some wild forms without the brown markings. Interestingly, there are several photos of natural populations of C. albus x monophyllus and the hybrid progeny looks like a custard yellow albus. I think Bob Werra mentioned something like this happening in his backyard. Nhu On Sat, May 12, 2012 at 10:00 AM, Jane McGary <janemcgary@earthlink.net>wrote: > Are there populations of C. monophyllus without dark markings? >