. 
1878.] 30 {iesquereux, 
the leaves coming out in bundles from a common point of the stems, which 
appears irregularly articulate. Some of these leaves seem separate and 
joined single by a semi-lunar base to the stem. But I have to remark that 
ihe points of attachment of the inferior leaves in @ are not perfectly dis- 
tinct, and appear rather truncate than semi-lunar and embracing. The 
point of attachment of the leaves in bundles is, however, distinct. There- 
fore I am in doubt if the lower leaves may not have been separated from a 
common point and scattered along the stem, where by compression they 
have merely the appearance of being joined to it. The round points 
showing scars of bundles of leaves, are seen all along the stem and at equal 
distance from each other, even to the very base, and, therefore, the sepa- 
rate distribution of the cthers along the stem seems anomalous. 
If the position of those scattered leaves and the point of attachment is 
right, as it can be seen upon the stone and as figured, this genus would 
partake of some of the characters of the leaves of Cordaites, by their semi- 
embracing base and the nervation buried into the substance of the leaves 
but recognized by the striz of the surface. The degree of relation to the 
former genus is marked as seen above by the character of the epidermis. 
The connection of a number of leaves from one and the same point and 
from an apparent articulation is peculiar and gives to the branch an ap- 
pearance comparable to that of the rhizomas of some Hquisetacee ; the 
characters of the leaves are, however, totally different from those of rootlets. 
DESMIOPHYLLUM GRACILE, sp. nov. 
Pl. LIU, fig. 1. 
The specific characters are the same as those of the genus. 
The figure is an exact representation of the specimen as far as it can be 
observed. The stem, a little more than one centimeter thick and flattened, 
seems to have been, if not fistulose, at least, soft and flexible. Its surface 
has the same appearance as that of the leaves, the epidermis having the 
same texture, and the bundles of nerves being also indistinctly discernible 
by the irregular ridges, or vertical, more or less obscure, and always ob- 
tuse wrinkles. The leaves appear long; none of them are preserved en- 
tire. They are sessile, two or three millimeters broad, only at their point 
of attachment, two to four together, to a circular scar, and gradually and 
equally enlarging upwards to about one centimeter at the point where they 
are broken. To the naked eye the leaves and stems appear smooth, rather 
shining, but with the glass the surface is seen minutely rugulose. 
I do not know of any plant of the coal measures to which this fossil or- 
ganism could be compared. The disposition of all the leaves of Cordaites 
is in spiral order, this species, therefore, can not be placed in the same 
division. 
Habitat. Same asthe former. Mr. I. F. Mansfield. 
’ 
LEPIDOXYLON, Lesqx. 
Stems, or branches of large size. The fragment figured is six centi- 
meters broad, rapidly diminishing in its upper part to a conical point ; 
