This week we have a simple element that has some interesting characteristics. Hishi (菱) can be translated as the rhombus/diamond shape, a type of water chestnut, or as a caltrop (the weapon). In mon, it is depicted as a geometrical rhombus. This is the same element used in the logo for the Mitsubishi corporation, which was named for the three (mitsu) diamonds in its crest. Here are two versions of a three stacked (literally, three stories) hishi crest, a version used by Ogasawara Tadazane in the 17th century(SH:63) and a more modern version.(IEJFC:312.13)

This is an example of a highly stylized plant motif, and also, as a caltrop, a military connotation. This particular arrangement also has a similar shape to the character for ‘king’ (王/ō), and thus had auspicious connotations.(ja.wp:小笠原氏)

Giveaway iPhone 7 Plus