THALLOGEN n.
One of a large class or division of the vegetable kingdom, which includes those flowerless plants, such as fungi, algæ, and lichens, that consist of a thallus only, composed of cellular tissue, or of a congeries of cells, or even of separate cells, and never show a distinction into root, stem, and leaf.…
VEGETABLE a.
ant most conspicuous, but destitute of vascular tissue, as in Mosses and Scale Mosses. 2. Thallogens. -- Plants without distinct stem and leaves, consisting of a simple or branched mass of cellular tissue, or educed to a single cell. Reproduction effected variously. Divided into Algæ, which contain chlorophyll or its…