New Brunswick, Maine, and Eastern Canada, 169 



giving a thin lamination. For tins reason I desire to dedicate it 

 to my late lamented friend, Prof. Robb, who lias been called 

 away in the midst of labours that would have added much to our 

 knowledge of the geology of New Brunswick. I have seen no 

 specimens of this leaf entire ; but it appears to have been a broad 

 lanceolate or oblong leaf, resembling the common Cordaites of the 

 coal measures, but more delicate in its striation. Mr. Matthews 

 has found specimens 3 inches in width. 



The generic name Cordaites as used here, may require some 

 explanation. I employ it as applied by Unger to the Flabellaria 

 horassi/oUa of Corda, which I regard as the type of all those 

 broad parallel-veined elongated leaves, which have by various au- 

 thors been placed in the genera Pycnophyllum^ NoeggeratJiia^ 

 Poacites, and Flabellaria. The first of these names, proposed by 

 Brongniart, I regard as a synonym of Cordaites ; but I have no 

 certain information as to its priority to that name. The second, 

 Noeggeratliia, was originally applied to flabellate and pinnate 

 leaves, quite distinct from that now described.* It has by some 

 authors been restricted to a genus of ferns allied to Cyclopteris 

 and by others still included in that genus ;f and latterly it is used 

 by Goeppert| and by Unger,§ to include parallel veined leaves, 

 like the present species, but placed among monocotyledonous 

 plants, and said to be pinnate, though there is no evidence of this 

 in several of the species, some of which may possibly belong to 

 Cordaites, and others, as N. tenuistriata, (Goeppert,) are prob- 

 ably stipes of ferns allied to my Cyclopteris Acadica. Poacites, 

 if P. cocoina (L. and H.) is considered its type, cannot include 

 these leaves, and Flabellaria is now restricted to leaves of palms, 

 quite dissimilar from Cordaites. 



By the use of the generic name which I have selected for the 

 above reasons, I hope to avoid all the confusion in which the 

 nomenclature of leaves of this type has long been involved. I do 



* Lindley and Hutton, Fossil Flora. It is to these leaves, represented 

 by N.foHosa and N. flabellata, that the name properly belongs, and it 

 appears desirable that they should be more distinctly separated on the 

 one hand from ferns of the genus Cyclopteris, and on the other from 

 plants like that now under consideration. 



t Lesquereux in Rogers' Pennsylvania. See also Unger, Genera et 

 Species, and Goeppert, Gattnung. 



t Flora des Uebergangsgebirges, and Flora der Silurischen, &c. 



§ Unger Palgeontologie des Thuringer waldes. 



