88 TRIASSIC FISHES AND PLANTS. 
PacHYPHYLLUM SIMILE, nN. Sp. 
Pl. XXII, Hig. 2: 
Foliage dimorphous, on the large branches appressed, sometimes 
seale-like, on the smaller twigs longer, crowded or open, leaves triangular 
or falciform, keeled, pointed. 
In the Triassic rocks of New Jersey, Connecticut, and Massachusetts 
slender detached twigs of coniferous trees are frequently met with, but they 
are usually fragmentary and not well preserved. They show two forms of 
foliage, the appressed and the divergent, and they vary much in their 
strength; some twigs being very slender, with comparatively remote leaves, 
while on others the leaves are longer and more crowded. These differ- 
ences are so marked that I have been led to think the specimens rep- 
resent two species. Both these forms are represented on Pl. XXII, Fig. 
2, the stronger and more leafy branches; Figs. 8, 3a, 3b, the more slender 
twigs, with shorter leaves. To the first I have given the name Pachyphyllum 
simile from its resemblance to P. peregrinum of the Jurassic. The other I 
have ealled P. brevifolium. As will be seen by comparing Fig. 2 with the 
representation of P. peregrinum given by Saporta,’ there is a marked 
resemblance between them, but our plant never assumes the form shown in 
the figures of P. peregrinum given by Lindley and Hutton’ or by Saporta on 
Pl. XLVI of the volume just quoted. The two species are evidently allied 
but are quite distinct. ; 
This plant has been before found in America and has been figured and 
described, though from bad specimens and erroneously. Prof. . Emmons? 
represents a twig from Turner's Falls, Mass., the locality from which that 
now figured was obtained. It is evidently the same thing, but is badly 
figured and wrongly named Walchia. It does not belong to that genus and 
can be referred with confidence to Pachyphyllum. Professor Fontaine, in 
his Monograph, Pl. XLVII, Figs. 6, 7, represents twigs which are essen- 
tially identical with the form now figured from Turner’s Falls. The larger 
to) 
of these two twigs is copied from Professor Rogers’s paper, but no locality 
1 Paléontologie frangaise, végétaus, vol, 3, 1883, pl. XCVII. 
* Fossil Flora, pl. LXXXVIII. 
*Am. Geol., pt. 6, 1857, p. 108, fig. 76. 
7 
1g 
etal 
