TiENIOPHYLLEJE— LEPIDOXYLOF. 253 



thin-walled cylindrical "leaves," with loose axial fascicle within caAdties 

 of secondary, if not primary, origin, and the irregularly disposed leaflets, 

 which, like the larger leaves, are contracted at the base to a small oval or 

 linear-oval, more or less distinctly' nmbilicate point of origin, may be con- 

 strued as perhaps indicating a radical homology. But while in some re- 

 spects the affinities of TcEniophylkim seem to be strongest with Stigmaria or 

 Stigmarioims, its association with Stemmatopteris, although it may be only 

 circumstantial, is so remarkable as to command a consideration as possibly 

 representing appendicular organs of the latter. The impression gained from 

 the examination of the specimens from Missouri is that they were suited to 

 an extremely humid habitat, if they were not subaqueous in their growth. 

 It is, however, quite possible that material will be found that will show 

 TcBniopliyllmn to be a Stigmarioid type. 



Localities. — Deepwater, U. S. Nat. Mus., 6070; Owen's coal mine, U. 

 S. Nat. Mus., 6068; Hobbs's coal mine, U. S. Nat. Mus., 6069. 



LEPIDOXYLON Lesquereux, 1878. 



Proc. Am. Phil. Soc, vol. xvii, p. 333; Ooal Flora, vol. ii, 1880, p. 557. 



Lepidoxylon anomalxjm Ls. 



1878. Lepidoxylon anomalum Lesquereux, Proc. Am. Phil. Soc, vol. xvii, p. 334, pi. 



liv, fig. 5; pi. Iv, figs. 1, Iff. 



1879. Lepidoxylon anomahim Lesquei-eux, Coal Flora, Atlas, p. 17, pi. Ixxxiv (]3l. Ixxxiii, 



fig. 5f); text, vol. ii (1880), p. 557 (excl. ref. " Schizopteris anomala Brougu. ?"). 



Axis linear, robust, attaining a diameter of 5 cm. or more, giving origin 

 on all sides to numerous, apparentlj^ irregularly disposed, rather distant, 

 lax, linear, flat or flaccid leaves or leaflike appendages, and rather densely 

 clothed with short, linear, upward-curving, chaffy scales, or densely and 

 irregularly lineate when decorticated; scales irregulai'ly disposed, 1 to 4 

 distant, linear or linear-lanceolate, 9 to 15 mm. long, 1 to 1.5 mm. wide, 

 thin, very finely lineate in probable correspondence to the longitudinal 

 rows of cells, tapering upward from near the base to a slender acute apex, 

 slightly convex dorsally, very oblique, nearly erect or closely imbricated, 

 narrowed at the point of origin to a slightly prominent discoid attachment 

 about 1 mm. in diameter; leaves or appendages slender, rather distant, 

 open, lax, linear, probably cylindrical or cavernous, narrowed near the 



