FOSSIL PLANTS. 
441 
blades and of the sporange-pedicels, as they appear when iso¬ 
lated from the cone, is not recognizable, therefore its specific 
relation is uncertain. 
The cone is figured as an illustration of the position of the sporange-cells on 
their axis, to which they are perpendicular, and also of the form of the seeds. 
These seeds, fig. 6 and 7, highly magnified, resembling those of a Lycopodium, 
are exactly three one-hundredths of a millimeter in size, nearly round or slightly 
tetrahedral, with valves discernible but without borders, and often agglomerated 
by triplication, but separating easily. The absence of borders or wings on 
these seeds indicates their maturity. They are easily detached from the spo- 
ranges, like a brownish powder. The part seen at the top of the cone, and 
represented enlarged in fig. 5, seems to be the support or the pedicel .of a blade 
or the scale of the sporange. 
In a concretion from Mazon creek. 
Lepidostrobus oyatifolius, Sp. nov. 
PI. xxx, fig 2 and 2 b. 
Cone about three inches long, one inch broad, with short, 
erect blades; blade obtuse at its base, lanceolate obtusely 
pointed, comparative^ broad; pedicel of the sporanges short, 
lanceolate. The axis of the cone appears to be narrow, a pe¬ 
culiarity which does not agree with the shortness of the pedi¬ 
cel of the sporange. As the detached blade, fig. 2 b, is copied 
from another specimen which is crushed, and whose form is 
unrecognizable, it may belong to a different species. 
In concretions from Mazon creek. 
Lepidostrobus oblongifolius, Sp. nov. 
* 
PI. xxx, fig. 3 and 3 b. 
A very fine specimen, also from the concretions of Mazon 
creek, representing an exact cross section of a cone. The 
central axis is one line broad, the blade one inch long, its 
breadth one-third of the length, oblong, obtusely pointed, 
—56 
