A [i]boutonnière[/i] (French for buttonhole) is a flower or bud traditionally worn on the lapel buttonhole of a man's jacket on special occasions.

Nowadays it is not gender-specific, but if the flower is not <b>explicitly</b> on the lapel (i.e. post #5881928) use [[corsage]] instead.

h4.See also
* [[corsage]]
* [[lapel pin]]
* "Boutonnière (Wikipedia)":https://en.wikipedia.org/wiki/Boutonni%C3%A8re
ブートニア