The Collaborative International Dictionary
Purpurogenous
Purpurogenous \Pur`pu*rog"e*nous\, a. [L. purpura purple + -genous.] (Biol.) Having the power to produce a purple color; as, the purpurogenous membrane, or choroidal epithelium, of the eye. See Visual purple, under Visual.
Wiktionary
purpurogenous
a. (context biology English) Having the power to produce a purple colour.