An interesting case in this connection is afforded by the internodal cells of the characeae, which possess only vegetative functions.
"Darwin and Modern Science"
A.C. Seward and Others
They have been long known in the organs called the antheridia of mosses, Hepaticcae, and characeae, and have more recently been discovered in peculiar cells on the germinal frond of ferns, and on the very young leaves of the buds of Phanerogamia.
"COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1"
Alexander von Humboldt