1878. | 319 'Lesquereux. 
NV. Beinertiana Geepp., Gatt. liv. 5-6, p. 108, Pl. XII, fig. 2 and 3, repre- 
senting much smaller leaves whose description is insufficient. Of the first, 
comparing it to V. foliosa, the author says that the nerves are dichotomous, 
and more distinct ; of the other that they are very close (creberrimi), and 
dichotomous. The first is from the Devonian (grauwacken), the other 
from the Carboniferous. As far as seen from the figure and the descrip- 
tions, the characters of both do not agree with those of this species. Of the 
first, Schimper supposes that it may be a leaflet of a Macropterigium, of the 
second he says nothing. N. Beinertiana, described also by Geinitz, is said 
to have veins of equal thickness, wrinkled across, two characters at va- 
riance with the nervation of these leaves, where besides the unequality of 
the nerves, the cross wrinkles are less marked than in any other species of 
this genus, indeed undistinguishable even with a strong glass. 
Habitat. Pittston ; intra-conglomerate measures, R. D. Lacoe. 
[ COMMUNES. ] 
This section might be subdivided into two, one for the species with large 
leaves, more generally found in the middle coal measures ; the other for 
the narrow leaved species, which appear related to those described by 
Grand’ Eury, under the name of Poa-cordaites. I cannot, however, find, 
either in the nervations, or in the basilar form of the point of attachment 
of the leaves, any persistent characters which could enable me to dis- 
tinctly separate them. 
CoRDAITES BorRAssrFouius Ung. 
Pl. XL VII, fig. 3, 3a, 30. 
Leaves generally large from five to eight millimeters broad in the middle, 
where they appear the widest, gradually and slightly narrowing upward 
and downward, sublinear, obtuse or truncate, and generally more or less 
deeply split at the top, slightly contracted at the semi-lunar somewhat in- 
flated base. Nervation indistinct to the naked eyes, close, five to seven 
primary nerves in one millimeter, and generally one intermediate thin 
veinlet, surface marked by cross wrinkles, more distinct than in the former 
species. 
As figured by Corda, who has exactly marked the characters of nerva- 
tion, and of the areolation, the leaves are all obtuse and shorter than I have 
generally found them. The branch which the German author has figured, 
however, is a young one ; the leaves are merely those of the tops of the 
branches. I have seen in Kentucky, near Amanda furnace, a bed of clay 
composed mostly of remains of this species, where amongst an immense 
number of fragments, I found also some large top leaves five to six centi- 
meters broad, some very obtuse, half round, some also split into lacinise in 
the middle, others narrowed at the top, like that of our figure. 
The one figured here is cut in two, the middle part being left out for 
want of space. It measures in its whole, forty-five centimeters in length, 
and six centimeters width, in the middle; the lines 3° and 3¢ mark the 
diameter of the leaf. 
