SELLARDS.| Fossil Plants, Upper Paleozoic, Kansas. 397 
Pecopteris BRONGNIART. 
Filicites sec. Pecopteris Brongniart, Mem. Mus. Hist. Nat., vol. 8, p. 2338, 1822. 
Pecopteris vestita Lx. Pl. XLV, figs. 10-18. 
Coal Flora, vol. 1, p. 252, pl. 48, figs. 1-7. 
This species is rather abundant in the Cherokee shales. The 
midvein of the pinnule is but slightly decurrent at its union 
with the rachis. The lateral veins are open, fork once near 
the middle at a wide angle, the upper division sometimes again 
branched. The surface of the pinnule is very densely covered 
with scaly hairs, the venation, except where the pinnule was 
macerated somewhat before fossilization, being entirely ob- 
scured. The epidermis is capable, however, of being removed 
with acid, thus exposing the venation (plate XLV, fig. 11). 
The species is readily distinguished from P. pseudovestita, 
as characterized by David White, by the more distant nerva- 
tion and the scaly epidermis. After comparing a large series 
of the specimens of this species as developed at Lansing with 
the form so abundant at Mazon Creek known in literature as 
“P. villosa,’ I am inclined to doubt the existence of sufficient 
characters to warrant the specific separation of the two forms. 
The pinnules of the species as developed at Lansing seem to be 
less decurrent, except in the small pinnules near the apex, than 
is the case in the specimens from the type locality at Clinton, 
Mo., in which character the Lansing plants approach the 
Mazon Creek form. In case the two forms are united as a 
single species Lesquereux’s name should stand, as the P. vil- 
losa of Brongniart is a dubious species, and according to Kid- 
ston (Trans. Royal Soc. Edin., vol. 33, pt. 2, p. 37, 1886-87) 
of doubtful existence. 
Formation and locality: Cherokee shales, Lansing. 
Pecopteris candolliana Brongn. Pl. XLV, figs. 6-9. 
Pecopteris candolliana Brongniart, Hist. Veget. Foss., p. 305, pl. 
100, figs. 1, la., 1883 or 1834; Lesquereux, Coal Flora, p 243; 
Geol. Rept. Ill., vol. 4, p. 401; Schimper, Pal. Veget. 1, p. 500; 
Potonie, Flora d. Roth. v. Thur., p. 99, pl. 7, figs. 4, 5, 1893. 
Pecopteris candollei Brongn., Zeiller, Flora de Brive, p. 18, pl. 5, 
figs. 1-5. 
Numerous specimens of this species are found in the concre- 
tionary nodules at Twinmound. The preservation is good 
and the venation distinct. The pinne are usually detached. 
The agreement with the European figures and descriptions of 
the species seems complete. The pinnules are at right angles, 
or only slightly inclined, somewhat unequal in length, linear, 
