A fanfiction attached to this photo can be found here: link
fan art
the avengers
hawkeye
black widow
clint barton
natasha romanoff
jeremy renner
scarlett johansson
This Hawkeye & Black Widow fan art contains
bouquet, corsage, posy, and nosegay.
There might also be
rose, rosebush, japanese apricot, mei, prunus mume, japanese plum, and prunus salicina.