448 FLORA OF THE CARBONIFEROUS PERIOD. 



PALiEOPTERis, Geinitz. 



1. Palceopteris Hartii, s. n. 

 M. C. Grand L., C. F. Hartt. 



Stem or leaf bases transversely wrinkled with delicate lines, 

 scars transversely oval, slightly appendaged below, vascular scars 

 confluent. Breadth, 1.4 in. Length, 0,6 inch. 



2. P. Acadica, s. n. 

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



Stem or leaf bases longitudinally striated. Scars transverse, 

 flat above, rounded and bluntly appendaged below Avascular scars 

 in a transverse row ; breadth of scars 0.7 inch ; length 0.5 inch. 

 Caulopteris, L. & H. 

 Several small erect stems at the Joggins seem to be trunks of 

 ferns but are too obscure for description. 

 Psaronius, Cotta. 

 Trunks of this kind must be rare in the Nova Scotia coal fields, 

 A few obscure stems surrounded by cord-like aerial roots have 

 been found, and probably are remains of plants of this genus. 

 Megaphyton, Artis. 



1. Megapihyton magniftcwm, s. n. 

 M. C. Joggins, J. W. D. 



Stems large, roughly striate longitudinally ; scars contiguous, 

 orbicular, deeply sunk, nearly three inches in diameter, and each 

 with a bilobate vascular impression, two inches broad and an inch 

 high. 



2. M. humile, S. N. 



M. C. Sydney, R. Brown. 



Stem 2*5 inches in diameter ; leaf scars prominent, flattened and 

 broken at the ends, 1 inch wide. Surface of the stem marked 

 with irregular furrows and invested with a carbonaceous coating. 

 An internal axis nearly two inches in diameter, with a coaly 

 coating, sends off obliquely thick branches to the leaf scars. This 

 is a very remarkable specimen, and throws much light on the 

 structure of Megaphyton. Unfortunately the minute structures 

 are not preserved. 



Genus Lepidodendron, Sternberg; 



1. Lepidodendron corrugatum, Dawson. Journal Geol. Society, 

 Vol. XV. 



L. C. Horton, C. F. Hartt, J. W. D. ; Norton Creek, &c, N. 

 Brunswick, G. F. Matthew. 



