Lesquereux.] 316 : [March 1, 
upon another without any other kind of vegetable remains. There, also, 
I could never obtain a fragment of stem nor any kind of fruits which could 
be used for completing in some way the description of the characters of 
the genus. 
Now from the specimens recently published in the splendid Coal Flora of 
Grand’Eury, and from those which are described and figured here, and 
which give, perhaps, still more evidence in regard to the relation of the 
Cordaites, the genus may be characterized as follows : 
CorpaltTEs Ung. 
Stems or branches with a large medular canal, marked outside by trans- 
verse narrow close ribs, sometimes joined by divisions, covered with double 
or triple layers of bark, recognized in the fossil state by two or more thin 
layers of coal, that of the surface being more or less distinctly marked by 
semi-lunar inflated scar of leaves, and bearing also, as seen from our speci- 
mens, oblique divisions or branchlets. The naked stems have been gen- 
erally described under the name of Artisia or Sternbergia, when found de- 
prived of the bark. Leaves in spiral order, more or less distant, sometimes 
imbricated, ribbon-like, of various lengths and width, mostly linear or 
gradually enlarging upwards, generally obtuse, sometimes undulate, and 
more or less deeply split at the top, curving to and somewhat inflated at 
the sessile or semi-embracing base, marked lengthwise with parallel pri- 
mary and secondary nerves or lines more or less distinct, generally more 
distant in the middle of the leaves, and somewhat inflated toward the base. 
According to the enlarging progress of the leaves towards the point, the 
nerves divide by splitting, a division which is rarely observable. 
The stems bear racemes of flowers, rarely found, however, going out 
of the axils of the leaves. Two kinds are figured here, seemingly bear- 
ing, one male, the other fertile flowers. They evidently represent, in part 
at least, the so-called Antholites, which until now have been separately 
considered without positive reference. 
The fruits of Cordaites are described by Grand’ Eury under the names 
of Cordaicarpus, Diplotesta, Carpolithes Grand Eurianus, C. avellanus, 
and C. Gutbier? ; none of which, except the two last species have been 
found in connection with the specimens published here, or in the same 
clayed cannel coal wherefrom they are derived. The more common species 
of fruits of this locality are figured here as future points of comparison. 
No silicified remains of these plants have as yet been found in the 
American coal measures, and therefore, anatomical and microscopical re- 
searches in regard to their internal structure are here impossible. The only 
analysis made from a silicified stem, is that by Corda, loc. cit. European 
authors, especially Goeppert, Weiss and Grand’Eury, have discussed at 
length the characters of the Cordaites and their relation. This con- 
sideration, pursued from different points of view, though very instructive 
and interesting, cannot find place here. 
We owe to the systematic researches of Mr. I. F. Mansfield, of Cannel- 
ton, the discovery of a large number of specimens of this genus which have 
