Fungi (Jahn & Jahn, 1959) Class Gymnocarpi Order Hymenothecii Agarici Genus Agaricvs L. (1753), nom. sanct., nom. cons. Section Plevropvs (Pers.) Pers. (1801) Pileo dimidiato, stipite marginali, lamellis decurrentibus ex latere pilei diuergentibus. (Merulius bryophilus, et muscigenus.)