Osmanthus fragrans aurantiacus - This form is more cold hardy than the nominate species producing striking orange fragrant flowers in mid Oct. Great foliage too.
Osmanthus fragrans aurantiacus (left) and a selection of Osmanthus cultivars (right)
Osmanthus fragrans 'Fudingzhu' - The most outstanding flowering selection of this species that I have ever seen. The fall flower display can only be described as spectacular and on top of that it is extremely fragrant too!
Osmanthus fragrans thunbergii - This recent Chinese introduction has yellow fragrant flowers instead of white and larger leaves than the species. Very cold hardy.