1870 x. 507/2 The glittering iridescence of the insect's wings, or the gold and purple bronze which glistens on its armor.
1958 14 June 2/3 The stems and veins of the leaves are tinted a purple-bronze.
1992 H. Mitchell vi. 144 The plant has leaves the size of salad plates borne on stems a foot high or so, and they are oily, glossy green flushed with purple-bronze.