I checked the 2nd volume of the Ferminich olfactory kits I recently received.
One of the blossoms is Mimosa, listed as natural raw material. But the species the booklet refers to is Acacia decurrens. All the fragrances the booklet mentions (led by Pur Desir Mimosa of Yves Rocher, 2005) basenoters have already mentioned.
The booklet, with its preface by Jacques Cavallier, lists the descriptors of Mimosa as:
Floral - fresh - powdery - honeyed. Moreover it says.."smells like honey, thanks to its sweet, creamy tonalities".
My nose and memory agree with the 'fresh' but not the rest. I get the 'fresh' from the small bottle but not the honey.