A. roseus

A. roseus may refer to:


 * Agaricus roseus, a synonym for Mycena rosella and for Mycena rosea
 * Aleurodiscus roseus, a synonym for Laeticorticium roseum
 * Araneus roseus, a synonym for Micrommata virescens
 * Atylus roseus, a synonym for Isopogon dubius