MESOZOIC PLANTS OF KOETH CAROLINA. 105 



Undetermined Fern. 

 Plate LIV, Fig. 9. 



On plate 4, fig. 3, of his work, Emmons gives a figure of a plant which 

 he does not determine, and of which he says: 



" On plate 4, fig. 3, I have introduced tlie figure of tlie apex of a frond which is 

 not well defined, and hence it is uncertain to which genus of ferus it should be 

 referred, provided it be a fern. No secondary veins can be seen, the midrib is plain, 

 and the leaflets taper from the base to a point, and become decurrent upon the 

 rachis." 



This plant is precisely like the figure given by Schenk in his "Foss. 

 Flor. der Grenzsch ," plate viii, fig. 2, of Asplenites Ross&rti, var., and it is 

 probably the same plant. 



Undetermined Fern. 

 Plate LI, Fig. (i. 



On plate 6, fig. 2, of the "Am. Geol.", Emmons gives a figure of a plant 



which he does not determine, but of which he says: 



"This is probably a Pecopteris, as its middle vein reaches the apex, and has forked 

 side vein?; but its characters are upon the whole too indistinct to be determined with 

 certainty." 



This is evidently a fragment of a young plant of a Laccopteris very 



close to, if not identical with, Laccopteris elegans. It much resembles fig. 



2 plate xl, of Schimper's "Pal. Vcg.," which represents the young sterile 



plant of L. elegans. 1 do not see how it can be separated from that plant. 



Odontopteris tenifolius (tenuifolius ?). 

 Plate XLIX, Fig. 7. 

 Emmons's "Am. Geol.", plate :i, fig. 5, \t. 105. 



"Frond bipiunate, or pinnate-pinnatifid, leaflets membranaceous, adhering by the 

 whole base, nerves springing from the secondary rachis in more than one set, branch- 

 ing forked. Found at Ellington's in the blue slate, but more rare at Haywood in the 

 reddish marly slate. At the last locality the obscurity of the imprint creates consid- 

 erable doubt respecting its characteristics. The imprints are numerous at this place, 

 and the geological position far above that at Ellington's." 



Emmons gives, in plate 3, fig 5, "Am. Geol.," the figure of a rather 

 large plant, much resembling an Odontopteris. This, as seen in our Plate 

 XLIX, Fig. 7, has no midrib or lateral veins given in the pinnules, but 

 from the description of them the plant must be an Acrostichides, and it is 

 probably identical with Acrostichides rliombifoliiis from the Virginia Mesozoic. 



