Smithsonian Report, 1918. — Berry. 



Plate 4. 



Fig. 27. -Devonian Forms of Archaeopteris. 



1. Archaeopteris firnbriata Nathorst. Uipper Devonian of Bear Island (after Nathorst). 



2. Archaeopteris jacksoni Dawson. Devonian of Maine (after White). 



3. Archaeopteris fissils Nathorst. Devonian of Russia (after Nathorst). 



4. Archaeopteris hibernica (Forbes). Devonian of Ireland (after Schimper). 

 4a. Pinnule of same (after Schimper). 



4b. Fertile pinnae of same (after Schimper). 

 4c. Group of sporangia of same (after Schimper). 

 4d. Stipules of same (after Kidston). 



5. Archaeopteris hitchcocki (Dawson). Devonian of Maine, fertile pinnae of type (after White). 

 5a. Group of sporangia of same (after White). 



