History of the Fungi of the Kingdom of Naples (1848) - Page 26

SYSTEMATIC PROSPECTUS

OF THE GENUS AGARICUS

According to the opinion of the distinguished FRIES.

CLASS I.

HYMENOMYCETES.

CHARACTER: Hymenium bare.

( †. Developed. Asci perfect. )

ORDER I.

PILEATI Cap-bearing.

CHARACTER: Receptacle dilated, sometimes branched, tending toward an orbicular shape. Hymenium underneath. Asci fixed.

GENUS I. — AGARICUS, Linn.

CHARACTER: Lamellae gills radiating from the center or base, simple, parallel, usually with shorter ones interspersed, composed of a tightly connected double membrane, transversely flat, somewhat detached from the pileus, longitudinally or on both sides bearing asci. — Stipes stalk never reticulated, rarely obliterated. — Pileus cap fleshy or membranous, horizontal in adults, determinate, with a free margin, inward-curving when young, never effused, crustaceous, etc. — Velum veil various, or none. (FR. Syst. myc. vol. I, page 8.)