Caulop'teris, a generic name for the stems of certain extinct tree-ferns, which range from the Devonian to the Permian system. They are hollow, and covered with markings similar to the leaf-scars on recent tree-ferns.
Caulop'teris
Chambers's Encyclopaedia, Volume 3: Catarrh to Dion, p. 28
Source scan(s): p. 0037