by yamachem - uploaded on May 22, 2015, 1:01 pm
The image is the design with stylized "seven leaves of wood sorrel ".
This image is originally from the Japanese family crest (kamon) which Chosokabe clan has been using.
The original file is seen here:
The woodsorrel is called "katabami" or "カタバミ in katakana" or "片喰 in kanji" in Japanese.