50 FLORA OF LOWER GOAL MEASURES OF MISSOURL 



In the lists at the end of tlie third vokime of the Coal Flora Sphenop- 

 teris chmrophylloides Brongn. is recorded^ as occurring in the vicinitv of 

 Clinton, Henry County, Missouri. But while a few specimens in the col- 

 lections agree well with one identified b}' Professor Lesquereux, which Dr. 

 Britts has had the goodness to loan me for comparison, it seems to differ in 

 some respects from the details first illustrated in Brongniart's species. In 

 fact, among the considerable number of American sjjecimens that have 

 been ascribed to this species there would seem to be included representa- 

 tives of several species, the individuality and cliaracters of which can be 

 developed only by a thorough scrutiny and detailed revision of the group of 

 Sphenopterids, including S. chceroplnjlloides, 8. cHstata Brongn., ^S". Graren- 

 liorstii Brongn., and S. 2)seuclomurrayana Lx. 



It is probable that the material on which the record of S. Grarenliorstii 

 Brongn. in the Clinton flora was based is of the same nature as that iden- 

 tified as S. clicerophyllokJes. The specimen figured (PI. XIX, Fig. 2) differs 

 more from the 5'. Britfsii type than any other included under the name S. 

 clicerophylloicles. It perhaps represents the form recorded as S. Gravenhorstii. 

 At present I am far from certain that the Missouri specimens of the former, 

 if not of both species, are not really fragments of the smaller and more 

 delicate pinnfe, of S. Brittsii Lx. Nevertheless, until a thorough revision of 

 the American material in this section of the genus Splienopteris {Ovopterls) 

 is made, so as to show the true relations of the forms, I shall record this 

 plant as S. chcByoplujlhidcs, in respect to the identification of Professor 

 Lesquereux. 



Localities. — Identified by Professor Lesquereux from Hobbs's bank: 

 Pitcher's coal bank, U. S. Nat. Mus., 5518; Owens's coal bank, U. S. 

 Nat. Mus., 5519. 



Sphenopteris cbistata (Biougii.) Presl. 



1828. Pecopteris cristata Brougiiiait, Prodrome, ]). 58. 



1835 or 1830. Pecopteris crisUita Bronguiart, Hist. veg. fuss., p. 356, pi. csxv, fig. 4 (5?). 

 1838. Splienopteris cristata (Biougu.) Presl, in Sternberg: Yersucli, vol. ii, p. 13L 

 1855. An Splienopteris cristata (Brougu.) Presl, Geinitz, Verst. Steink. Sachsen, p. 10, 



pi. xxiv, 6gs. 1, Irt, 2, 2rt? 

 1869. Splienopteris cristata (Brongn.) Presl, von Roehl, Foss. Fl. Steink. Westpbalens, 



p. 60, pi. xxix, figs. 14, 14rt. 



' Coal Flora, vol. iii, p. 880. 



