Thanks for your replies guys! :-)
The thing is I got few annona grafts from my friend to graft them on rootstock of annona cherimoya. One of them is the mentioned a. lutescens, according to my friend. The graft has red-coloured buds and fresh/young sprouts. When I cut into the graft or leaf, I smell very distinct smell, quite simillar to a fig tree. I never came across this when handling annona species. Do you think it could be either a. reticulata or a. squamosa ancestor?