燕子花と書かれることもある、5~6月にかけて濃い紫色の花を咲かせる植物です。平安時代から文様として描かれ、着物だけでなく、詩歌や絵画、工芸品などさまざまなものに見ることができます。湿地に生えることから水と一緒に描かれることも多いモチーフです。

The dark purple flowers bloom in May-June. It features a white pattern in the center of the three petals.
They have been a favorite pattern since the Heian period, and can be found in poetry, paintings, and crafts as well as costumes.
Since they grow in wetlands, it is often drawn with water.

Obi fabrics with this Japanese pattern from the obico selection