446 ELORA OP THE CARBONIFEROUS PERIOD. 



4. A. nervosa, Brongt. 



M. C, Sydney, R. Brown ; Bay de Chaleur, Logan ; U. C. ; 

 Pictou, J. W. D. 



5. A. muricata, Brongt. 



M. C, Joggins, Bathurst, Lyell ; U. C, Pictou, J. W. D. 



6. A. pteroides, Brongt. (Brongnartii, Goeppert.) 

 L. or M. C, Bathurst, Lyell 's list. 



7. A. Serlii, Brongt. 



M. C, Sydney, R. Brown; Bay de Chaleur, Logan. 



8. A. grandis, s. n. 

 Bay de Chaleur, Logan. 



Bi-pinnate; pinnae broad, contiguous, united at the base- 

 veins numerous, once forked, not quite at right angles to the 

 midrib. Upper pinnae having the pinnules confluent so as to 

 give crenate edges. Still higher the apex of the frond shows dis- 

 tant decurrent long pinnules with waved margins. A very large 

 and fine species of the type of A. Serlii and A. Grandini, but 

 much larger and different in details. Its texture seems to have 

 have been membranaceous, and fragments from that part of the 

 frond where the long simple pinnules are passing into the com- 

 pound ones might be mistaken for an Odontopteris. 



■Pecopteris, Brongt. 



1. Pecopteris arborescens, Schlot. 



M. C. Sydney, R. Brown ; U. C. Pictou, J. W. D. ; Wallace, 

 Dr. Creed. 



Seems to have been an herbaceous species with a very strong 

 petiole. It occurs in an erect position in a sandstone on Wal- 

 lace R. 



2. P. abbreviata, Brongt. 



M. C. Sydney, R. Brown ; Salmon R., U. C, Pictou, J. W.D. 

 Very common both in the Upper and Middle coal formation. 



3. P. rigida, s. n. 



U. C. Pictou, J. W. D. 



Similar to arborescens, but much smaller and with finer nerves. 



4. P. unita, Brongt. 



M. C. Sydney, R. Brown ; U. C. Pictou, J. W. D. 



Certain pinuules of a frond are sometimes swollen as if covered 

 with fructification below ; and in this state they resemble P. arguta, 

 Brongt. The sori are seen in other specimens, and are large, 

 round, and covered with an indusium as in Aspidium. 



