FOSSIL PLANTS. 89 
is given. By Fontaine it is referred to Cheirolepis Miimsteri, but I have 
elsewhere shown that it can not be a Cheirolepis; we find C. Miinsteri at 
Milford, N. J., but it is plainly distinguishable from this both by cones 
and by foliage. — 
PAcHYPHYLLUM BREVIFOLIUM, I. Sp. 
Pl. XXII, Figs. 3-3¢. 
Foliage dimorphous, on some branches closely appressed and scale-like, 
on terminal twigs divergent, though the leaves are always short and rela- 
tively broad. Cones ovoid, one inch in length; scales rhomboidal, closely 
appressed. 
In many localities the Triassic rocks of New Jersey and the Connect- 
icut Valley, especially where they are fine, gray, or more rarely reddish 
shales, contain great numbers of slender coniferous twigs, generally short 
and much broken up. Of these two forms are now figured which may be 
recognized as typical. Figures 3 and 3a the more leafy, and 3b the more 
scaly form. Sometimes we find twigs bearing leaves that are longer than 
those here shown; leaves that are divergent, rather open, sometimes spat- 
ulate, and never really acute. These may be a phase of the foliage of the 
present species, but they more probably belong to P. simile, showing a sim- 
ilar diversity of form to that seen in the figures of P. peregrinum given by 
Saporta." 
The plant under consideration has been noticed by Emmons and Fon- 
taine; by the former it was considered a Walchia, and given the two names 
W. brevifolia and W. gracilis Professor Fontaine® refers it to Chetrolepis 
Miinstert Schimper; but the discovery of ovoid cones having small rhom- 
boidal scales with twigs of this plant, and of digitate cone-scales with 
branches bearing more acute leaves, have shown its distinctness from the 
true Cheirolepis Miinsteri. 
The specimens represented in Figs, 8a and 3c are from Turner's Falls ; 
those in Figs. 8 and 3b from Durham, Conn. 
* Paléontologie frangaise, végétaux, vol, 3, pl. XLVIII, figs. 2, 3. 
2Am. Geol., pt. 6, 1857, pp. 107, 108, figs, 74, 75. 
3 Mon, cited, pp. 88, 89. 
