FERNS— SPHENOPTERlDE.E—SPnENOPTERIS. 49 



are more numerously deutate, especially on the lateral margins. Sphenoi)- 

 teris tenuifolia Brongn., to which, as figured by Grutbier/ it bears some 

 resemblance, is still more deeply dissected, while the details of the same 

 species given by Brougniart" and Kidston^ indicate a quite different plant. 



It is perhaps more closely related to S. Matlieti Zeill.,* or S. minuti- 

 secta F. and W.,^ from the Upper Barren beds in the Appalachian trough. 



I have seen in the collections specimens from Mazon Creek, Illinois, 

 and the Lorway seam of Cape Breton labeled Splienopteris cristata Brongn., 

 that are related somewhat closely to this species. These specimens are 

 involved in the difficulty alluded to in my remarks on S. clKeropliylloides. 



Locality. — All the specimens were collected by Mr. Gilbert van Ingen 

 at Pitcher's coal bank, U. S. Nat Mus., 5568, 5616. 



Sphenopteris gh^erophylloides (Brongn.) Presl. 



1835 or 1S36. Pecoptcris cJuerophylloides Brongniart, Hist. vog. foss., p. 357, pi. cxxv, 



figs. 1, 2. 

 1870, Fecopteris cJuerophylloides Brongn., Lesquereus, Rept. Geol. Surv. Illinois, vol. 



iv, p. 404, 

 1883. Pecoptcris chcerophylloides Brongn., Renault, Cours. bot. foss., vol. iii, p. 124, pi. 



xxi, figs. 10, 11. 

 1838. Sphenopteris chwrophylloides (Brongn.) Presl, in Sternberg: Versuch, vol. ii, p. 



131. 

 1880. Sphenopteris chcerophylloides (Brongn.) Presl, Lesqnereux, Coal Flora, vol. i, 



p. 270. 

 1886. Sphenopteris chcerophylloides (Brongn.) Presl, Zeiller, Fl. foss. hoiiill. Valen- 

 ciennes, Atlas, pi. xi, figs. 1, Iffl, 2, 2ft-6; text (1888), p. 90. 

 1865. Gheilanthites Brongniartii Ettingshausen, Farrnkraut. d. Jetzw., p. 73. 

 1883. Renaultia chcerophylloides (Brongn.) Zeiller, Ann. Sci. Nat., (6) bot., vol. xvi, p. 



185, pi. ix, figs. 16, 17. 

 18SS. Renaultia chcerophylloides (Brongn.) Zeiller, Fl. foss. houill. Valenciennes, p. 29. 



1883. Hapalopteris typica Stur, Morph. n. Syst. Culm- u. Carbonfarne, p, 29 (661), fig. 8. 

 1885. Hapalopteris typica Stur, Fame d. Carbon-Fl., p. 27, fig. 8, p. 46, pi. xlii, figs. 



3, 3rt, 4. 



1884. An Sphenopteris Oravenhorstii Brongn., Lesqnereux, Coal Flora, vol. iii, p. 880? 



1885. Hapalopteris chcerophylloides (Brongn.) Stur, Fame d. Carbou-FL, p. 176. 



1888. Hapalopteris chcerophylloides (Brongn.) Stur, Schenk, Die foss. Pflanzenr., p. 29. 

 1893. Ovopttris chcerophylloides (Brongn.) Potonie, FL Eothl. Thiiringen, p. 44, 



' Abdriicke, p. 39, pi. x, figs. 9, 9a. 

 - Hist. v(5g. foss., pi. xlviii, fig. 1, p. 190. 

 'Trans. Roy. Soc. Ecliub., vol. ssxiii, pi. xis, figs. 2, 2a-b. 

 ■> Fl. foss. honill. Commeutry, vol. ii, pi. i, figs. 3-6, p. 49. 

 5 Fontaine and Whifcn, Permian Flora, pi. v, figs. 1-4, p. 43. 

 MON XXXVII 4 



