434 University Geological Survey of Kansas. 
THE PERMIAN FLORA OF KANSAS. 
Description of Genera and Species. 
PTERIDOPHYTA. 
FELICALES. 
Pecopteris BRONGNIART. 
Pecopteris arborescens Brongn. Pl. LXI, fig. 2. 
This species is rather abundant at the Banner City locality. 
The form seems to be that typical of the species as developed 
in the Upper Coal Measures and the Lower Permian, having 
pinnules at right angles to the rachis, or nearly so, close or 
contiguous. Midvein straight, not decurrent. Lateral veins 
simple, arched slightly in passing to the borders. The im- 
pressions of the sporangia are preserved occasionally, the 
sorus consisting usually of four sporangia grouped around a 
central point of attachment. The primary rachis is incrusted 
with a mineral deposit obscuring the puncte. 
Formation and locality: Wellington shales, Banner City, 
Dickinson county, Kansas. 
Pecopteris cf. cyathea (Shloth.) Brongn. Pl. LX], fig. 3. 
Some doubt has been expressed by authors as to whether 
P. arborescens and P. cyathea are to be regarded as distinct 
species. Most of the Wellington specimens agree with P. arbo- 
rescens in the limited sense of that species. A few specimens 
are found, however, which seem to represent the P. cyathea 
form as characterized by Zeiller.?°* The pinnee have much the 
same form but the pinnules are more slender, having forked 
veins, the upper division sometimes again branched. 
Formation and locality: Wellington shales, Banner City, 
Dickinson county. 
Pecopteris cf. hemiteloides Brongn. PI. LXI, figs. 4-6. 
Two specimens occur in the collection having in the shape 
of the pinnules and in the venation a very close resemblance 
to P. hemiteloides. 
292. ‘These two species have already been discussed somewhat fully in the section on — 
Coal Measures flora. 
