412 Unwersity Geological Survey of anieas 
overlapping, contracted toward the apex and obtusely pointed. 
Pinnules alternate, open or oblique, distant or overlapping, 
flat or slightly arched at the borders, sessile, sometimes united 
at the top of the pinne, cordate at the base, occasionally at- 
tached by a portion of the base to the rachis in the upper part 
of the pinne, oblong, the borders parallel or gradually nar- 
rowed upward to the obtuse or rounded apex. Terminal pin- 
nules larger, comparatively long, somewhat hastate, cuneate 
below, usually sublobate, contracted in the upper part, lanceo- 
late, often slightly undulate, rounded at the tip. Midrib 
strong, appearing as a furrow on the upper side of the pin- 
nule, raised beneath, passing nearly to the apex of the leaf. 
Secondary veins thick, often appearing double, sometimes in 
relief on both sides of the pinnules, springing at a narrow 
angle from the midrib, arched, forking two or three times. 
into thick, distant veinlets; venation of the cyclopterid pin- 
nules flabellate, coarse, often appearing double. 
This species is represented by a large number of good 
specimens from the Cherokee shales at Lansing, Kan. The 
preservation is good, the venation usually distinct. The frond 
often has a green coloration, apparently the coloring chlo- 
rophyll of the leaf. The frond is dense, the pinnules very 
much crowded or rarely distinct. The species is easily recog- 
nizable by the distant thick veins, counting about 22 to 26 
per centimeter in the large pinnules, rather fewer in the 
smaller. The oblong-linear pinnules of the large pinne, such 
as the one shown in figure 5, plate XLVIII, are often con- 
stricted into small ovate lobes. In the specimens at hand the 
lobes appear, in every case, first on the upper side of the pin- 
nule, just above the base, the lower side less deeply or only 
faintly lobed. The terminal pinnules of the Lansing speci- 
mens are in many cases more obtuse than those of the speci- 
mens figured by Lesquereux in the Coal Flora atlas. Lesque- 
reaux (Coal Flora, p. 111) mentions the presence of this spe- 
cies from a “‘shaft near Ellsworth, Kan.” It is very probable 
that Leavenworth is the locality meant, the mine being the 
same as that from which came the specimens in the University 
collection. Ellsworth, in Ellsworth county, is in the Creta- 
ceous area of Kansas. One large specimen shows the dichot- 
omous character of the rachis. 
Formation and locality: Cherokee shales, Lansing. 
