Characters.—Flocci sporidiferous, naked (Fries).

Properties.—To this sub-order (which is closely allied to Confervaceae, p. 51,) are referred the yeast-plant, the ergot-mould, mother of vinegar, and some other plants interesting alike to the physician and pharmaceutist.

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