Definition:
- (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.
Compare thallogen with other words:
thallogen vs. thallophyte
leaves vs. thallogen
flower vs. thallogen
thallogen vs. thallus
plant vs. thallogen