WEST VIRGINIA GEOLOGICAL SURVEY 429 



POTAMOGETON ROBBINSII Oakcs. 



Knowlton, Amer. Geologist, Minneapolis, vol. 2, 1896, p. 

 371. Pleistocene (Interglacial) : [Carmichaels clay.] 

 Fagus ferruginea Ait. 



Knowlton: Amer. Geologist, ]\iinneapolis, vol. 2, p. 371. 

 Pleistocene (Interglacial) : [Carmichaels clay.] 

 Castanea pumila Mill. 



Knowlton, Amer. Geologist, Minneapolis, vol. 18, i8g6, p. 

 371. Pleistocene (Interglacial) : [Carmichaels clay.] 

 Quercus falcata Mich. 



Knowlton, Amer. Geologist, Minneapolis, vol. 2, 1896, p. 

 371. Pleistocene (Interglacial) : [Carmichaels clay.] 

 Betula nigra L. 



Knowlton, Amer. Geologist, Minneapolis, vol. 2, 1896, p. 

 371. Pleistocene (Interglacial) : [Carmichaels clay.] 

 Platanus occidentalis L. 



Knowlton, Amer. Geologist, Minneapolis, vol. 2, 1896, p. 

 371. Pleistocene (Interglacial) : [Carmichaels clay.] 

 Ulmus racemosa Thomas. 



Knowlton : Amer. Geologist, Minneapolis, vol. 2, 1896, p. 

 371. Pleistocene (Interglacial) : [Carmichaels clay.] 

 Liquidambar styraciflua. 



Knowlton: Amer. Geologist, ^linneapolis, vol. 2, 1896, p. 

 371. Pleistocene (Interglacial) : [Carmichaels clay.] 



PLANTS REPORTED FROM THE POCONO (MISSISSIP- 



PIAN) AT LEWIS TUNNEL, VA., SIX MILES 



EAST OF WHITE SULPHUR, W. VA. 



Archaeopteris alleghaniensis (Meek) Fontaine & I. C. White. 

 Archaeopteris Bockschianus Lesquereux. 

 Triphyllopteris Lescuriana (Meek) Fontaine.* 

 Triphyllopteris virginiana (Meek) Meek. 

 Lepidodendron scobiniforme Meek, 

 Lepidocystis silioua (Dawson) D. White. 



*The plants Hsted by Prof. Fontaine (Amer. Jonr. Sci. (3). 

 vols. 7 and 11, 1874 and 1876) as Cyclopteris Jacksoni, Palaeop- 

 teris Jacksoni, and P. cf. obtusa, probably are forms closely re- 

 lated to, if not indentical with, Triphyllopteris virginiana and T. 

 Lescuriana. 



