Geology and Fossil Flora of P.E.I. 159 



Alethopteris nervosa, Brongt. 



st massilionis (?), Lesq . 



Pecopteris oreopteroides, Brongt. 



11 arborescens, " 



" rigida, Dn. 



Cordaites simplex, Dn. 

 Trigonocarpum, Sp. 



To these Mr. Bain adds Calamities cannce/ormis or specimens 

 Tery closely resembling that species, and stems of the genus 

 Telodendron, -while he seems to think that Walchia of the type of 

 W. gracilis, Catamites gigas and certain Noeggerathia-like leaves 

 as well as the conifer, Dadoxylon edvardianum are more parti- 

 cularly Permian and characteristic of the second member above 

 referred to. 



Tylodendron was found by Weiss to include stems with 

 elongate, prominent leaf-bases of the character of those of 

 Knorria, but bifurcate at top. These stems or branches are 

 very characteristic of the Permian of Russia, Germany and 

 France. They have been found by Weiss to show the character 

 of Dadoxlyon when the structures are preserved, and are there- 

 fore Coniferous ; and it is now pretty generally believed that they 

 are decorticated branches of Walchia.* ^o far as European 

 evidence extends, they are to be regarded as strictly Permian, 

 and the species drawn by Mr. Bain is not distinguishable from 

 T.speciosum of Weiss. In Prince Edward Island, I have figured 

 (Report, Plate III, Fig. 30,) what seems to be the same species, 

 though under the name Knorria but my specimen may have 

 been from the Middle Series, then called Lower Trias, but now 

 regarded by Mr. Bain as Permian. In any case it is a strictly 

 Permian form. The ferns of the Permo-carboniferous merit a 

 careful re-examination in the light of recent publications in 

 Europe and America. 



2. Permian and Triassic. 



The Walchia found by Mr. Bain in the second or Permian 

 group is very near to my W. gracilis, and probably the same. 

 Weiss has, however, described and figured in Germany, 



* Flora der Rothliegenden in Saar-Rhein-Gebeite, 1872. 



