Understanding the material
Mimosa is a perfumery common name that needs a more precise botanical reference on a supplier specification. IFF lists flowers and twigs for its Indian mimosa absolute and describes powdery and honey-like aspects with green and fruity nuances. Those details belong to that supplied material; other grades should be read on their own terms.
Compare mimosa with orris. Both may suggest powder, but one may feel more pollen-like and honeyed while the other feels drier or violet-like. Note the difference without treating powdery as one single smell.
Explore the relationships
Continue with Orris, Orange blossom absolute, Rose. These connections are comparisons for studying finished fragrances, rather than mixing instructions.
Technical references
Supplier references describe their specific materials. The botanical image is illustrative and does not certify species, provenance, grade or ingredients in a finished perfume.