和紙の代表的な原料の楮には、多くの種類があり、それぞれ微妙ながら特長があります。WACCAのロゴマーク（家紋）は、中央に一般的な楮の葉を、左右は黒楮の葉の形状をモチーフにした、オリジナルの「楮紋＋外割黒楮紋」です。

WACCA

The kozo, or paper mulberry tree, is the best known raw material for washi paper, and there are many different kinds of kozo. All have their own characteristics though it may not be apparent by the way they look. The WACCA logo is called Kozo-mon plus Sotowari kuro-kozo-mon, and literally means a kozo crest, plus split exterior kozo leaves. It is an original motif featuring a common kozo leaf in the center of a black kozo leaf, split in half.

WACCA