...and on a stamp!
The stamp is from a series in 2012 showcasing green fruit. The 'letter verte' is La Poste's economy 'eco' rate.
I also have a green fruit from Taiwan. At first glance I thought it was a green lichee, but turns out it is an atemoya - a hybrid of the sugar-apple and cherimoya (native to south america).
For links to more stamps with a green theme, visit Sunday Stamps.