34 FOSSIL COAL PLANTS. 



surrounded by verticils of 12-14 long linear leaves distinctly 

 separated and equidistant at their base, greatly resembling 

 Asterophyllites grandis, L. & H., Tab. 19, Fig. 2. Cuyahoga 

 Falls. 



60. S. peltatum, {n. sp.) 

 Cuyahoga Falls. 



61. S. laciniatum, {n. sp.) 



62. S. brevifolium, {n. sp.) 



Cuyahoga Falls. 



The difference in form between the superior and inferior 

 leaves of Sphenophyllum, to which I have alluded, would 

 seem to indicate that it was an aquatic plant, the sub- 

 merged leaves being linear, uni-nerved, almost capillary; 

 the emerged leaves broad with a compound nervation, 

 precisely as in many recent aquatic plants. This suppo- 

 sition is further strengthened by the extreme length and 

 tenuity of the branches of this apparently herbaceous plant, 

 which would seem to have required the support of a denser 

 medium than air. 



HIPPURITES — LIND. & HUTT. 



63. H. longifolia? L. & H., Fo.ss. Flor., Tab. 190. 

 Zanesville. 



NEUROPTERIS — BRONG. 



64. N. cordata, Brong., Hist. Veg. J^oss., Tab. 64. 

 Saline ville. 



65. N. flexuosa, Sternb., Vers. I.,iJ- 16. 

 Poland and Cuyahoga Falls. 



66. N. Grangeri, Brong., Op. cit., Tab. 68. 

 Zanesville. 



67. N. Cistii, Brong., Op. cit, Tab. 70. 

 Salineville. 



