Abch. 



34 



Prof. Dawson has recognised the accuracy of this reference: 

 but in the absence of sterile leaflets^' the species cannot be 

 told. Compare a similar ^g, {Psilophytum condrusorum) in 

 Bull. Ac. R. Belgium, 1874. — VII F g, Chemung formation in 

 New York; Jacksoni^ from Upper Devonian in Maine; Hitch- 

 eockiana^ from Lower Devonian in N. Y. 



Archaeopteris hybernica. See Appendix. 



Archaeopteris jacksoni. See Appendix, 



Archaeopteris minor. Lesquereux. {Noeggerathia minor ^ 



Lesq. G e o 1 . 

 Pa., 1858, page 

 854, plate 1, 

 fig. 10). Col- 

 lett's Indiana 

 of 1883, page 

 71, plate 9, fig. 

 3, showing the 

 fructification. 

 —XI Mauch 

 C h u n k red 

 shale (sub-car- 

 boniferous) 

 FL!/. formation. 

 (See Lesqnereux's Coal Flora, Report P, Penn. Geol. Survey, 



^20. Moeggerat^doy rriirbor 



■ ■-^ 



Lesq. iii C-eoLFaJSS^. 



