It has a faint, sweet fragrance in the middle of the day but nothing overpowering. As far as differentiating between schlimii and schlimii fma manzurii, I think the main difference is the pale yellow-green coloration when the manzurii flower first opens and the circular staminode. Fma manzurii flowers that I've seen also seem to be rounder in shape than schlimii. Eliseo can probably comment on these differences better than I since he's seen so many more in bloom.