Sub-order IV. Pyrenomycetes.

Characters.—Perithecium indurated, at first closed up, then perforated by a pore or irregular laceration, inclosing a softer nucleus. Sporidia immersed in mucus, or inclosed in asci, which are attached by their base.

The Elements of Materia Medica and Therapeutics, Vol. II, 3th American ed., was written by Jonathan Pereira in 1854.