willowherb (Epilobium pyrricholophum)
A flowering plant in the evening primrose family; the name literally means 'red flower'.
Willowherbs were growing in clusters in the marsh.
safflower red
A red dye or color obtained from safflower; used in traditional dyeing and cosmetics.
This lipstick uses pigment from safflower red.
kimono color combination (crimson outside, bluish purple inside)
A traditional Japanese color scheme for layered garments, with a striking contrast between the outer and inner colors.
The akabana layering of a twelve-layered kimono has crimson on the outside and bluish purple inside.
Katakana spelling is common for this plant name; usually written in kana.
Kanji spelling is used but less common; may be encountered in botanical contexts.
From 赤 (aka, 'red') + 花 (hana, 'flower'), with rendaku voicing to bana. The plant name is a direct description of its red flowers; the dye and kimono color names derive from the same red-flower association.