Bible Dictionaries
Thallogen

Webster's Dictionary

(n.) One of a large class or division of the vegetable kingdom, which includes those flowerless plants, such as fungi, algae, 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.

Bibliography Information
Webster, Noah. Entry for 'Thallogen'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/thallogen.html. 1828.