紫矿属（英语：Butea），也常被称为森林之炎(Flame of the Forest)，为豆目的花类属。旗下有两个种类。

此属源自于东南亚和印度一带，在那里此属被取做木材、树脂、染料和药物。

Butea is a genus of flowering plants belonging to the pea family, Fabaceae. It is sometimes considered to have only two species, B. monosperma and B. superba, or is expanded to include four or five species.

Butea monosperma is used for timber, resin, fodder, medicine, and dye.