plants from Neivfoundland. 391 



be very closely similar to, if not identical with, Sphenophyllum 

 tenerrimum, Stur*, known from the Lower Carboniferous rocks of 

 Silesia. Both leaf whorls and stem impressions are represented. 

 Two of the former are seen in text-fig. 1, magnified twice. 



The whorl consists of six or more dichotomously branched 

 narrow segments. In some cases the leaves dichotomise twice, 

 in others, three times. The first dichotomy may take place at 

 the base of the leaf, or a little above the base. 



Sphenophylls possessing this reduced and repeatedly forked 

 type of foliage are known both from the Lower and Upper 

 Carboniferous. In some Coal measure species, both normal wedge- 

 shaped leaves and leaves with reduced forked segments may 

 occur on the same stem. In the case of S. tenerrimum, Stur, 

 however, as in the present specimen, there are no indications 

 that would lead one to suppose that the plant was heterophyllous. 



With the Newfoundland specimens we may also compare the 

 Sphenophyllum subtenerrimum of Nathorst-f* from the Upper 

 Devonian rocks of Bear Island in the Arctic regions. Here how- 

 ever the leaf whorls appear to be smaller in size|, and the leaf 

 segments even more delicate. 



Impressions of stems of Sphenophyllum, possibly belonging to 

 the same species as the leaves described above, are also associated. 

 One of these is shown in text-fig. 2, where two somewhat tumid 

 nodes are seen, with which fragments of leaves, which lie at right 

 angles to the plane of the stem as seen in this specimen, appear 

 to be still in continuity. The internodes exhibit two rather 

 sharp longitudinal ridges, which are fairly distant from one 

 another. 



This stem appears to be somewhat stouter, and the internodes 

 more elongated, than the stem specimens of S. subtenerrimum, 

 figured by Nathorst. 



The other plant collected from the Shenanditti River is of 

 special interest for it appears to be new to science, at least 

 specifically, if not generically. In Mr Feilding's collection, several 

 examples of a large fan-shaped leaf are more or less completely 

 preserved. These leaves often exceed 14 cm. in length and 

 breadth. The nerves radiate from the base and are numerous, 

 dichotomising here and there in the broader portion of the leaf. 

 All the examples are detached. At the base the leaf narrows 

 somewhat rapidly and appears to have been sessile. 



These leaves recall some species of the rare and little known 

 genus Psygmophyllum, Schimper, more closely than any of the 



* Stur (Culm Flora, Part ii.), Ahhandl. k. k. Geol. Reichsanst, Wien, Vol. viii. 

 1877, p. 108, pi. VII. (xxiv.), figs. 1—14. 



t Nathorst, K. Svenska Vetenskaps-Akad. Handl., Yol. xxxvi. No. 3, 1902, p. 23, 

 pi. 2 (figs. 14—17), pi. 3 (figs. 7, 8), pi. 4 (figs. 14—23), pi. 5 (fig. 5). 



X Ibid., pi. 4 (figs. 22, 23). 



