Pecop. 



610 



1858, plate 12, figs. 1, 1 a.) Lesq. Coal Flora, page 256. Ee- 

 markably like Alethopteris erosa ; and close to Pecopteris 

 augustissima^ Brgt. Found in shale of old anthracite mine 

 behind the hills east of Port Carbon, Schuylkill Co., Pa. — XIII, 

 Also under Campbell's ledge, Pittston. XII 



Pecopteris serlii. See Alethopteris serlii. XIII 

 Pecopteris sillimani, Brgt. Darlington Coal, Q, p. 55. 

 Pecopteris solida. See Appendix, 



Pecopteris squamosa, Lesq. Coal Flora, p. 235, pi. 39, fig. 

 12 to 13 a. At Darlington, Pa., Q, hh.—XIII, 

 Pecopteris strongii. (Lesquereux, Coal Flora of Pa., 1880, 



page 236, plate 39, figs. 14 to 15 a, Illinois Rt. 4, plate 13, fig. 

 7 to 9. Only seen in Morris coal roof and Mazon creek nodules. ) 

 Collett's Indiana Rt. 1883, page 64, plate 14, fig. 2; remarkable 

 for the great length of its feathery leaves, and which makes 

 the leaflets distant from each other. XIII 



Pecopteris truncata, in Darlington bed, Q, 55, XIII, 

 Pecopteris unita. Brongniart. (Lesquereux, Coal Flora of 



Penn. 1880, page 223, 

 plate 40, figs. 1 to 7 J. 

 — Geol. Penn, 1858, 

 page 867. Illinois 

 Rt. 2, page 442; 

 IS^Mfe^l Schimper ; Brogniart 



Gyatlieites unitus^ Geinitz, Verst. pi. 29.) Collett's Ind. 1883, 

 plate 13, figs. 3, 3 a, 5. — XIII Abundant in some localities ; 

 beautiful specimens in Mazon creek ore balls (200 of them in 



