22G MESOZOIC FLORAS OF UNITED STATES. 



1894. Aspidiu7n TideropliyUum Font, (part, quoad Cat. U. S. Nat. M\is., No. 3992) 



in DUler & Stanton: Loc. cit. (PL LXV, Fig. 7.) 

 1895 [1896]. CladopMeUs indinata Font.? in Stanton: Bull. U. S. Geol. Surv., No. 



133, p. 15. (PI. LXV, Fig. 8.) 

 1895 [1896]. Aspidium Jieteropliyllum Font, (part, quoad Cat. U. S. Nat. Mus., No. 



3992) in Stanton: Loc. cit. (PI. LXV, Fig. 7.) 



Several specimens of a small fern that seems to be CJado-phlehis j^ai va 

 were found. This fern of the Lower Potomac beds of Virginia appears 

 to be rare in the collections now being described. 



The most complete specimen is that figured on PL LXV, Fig. 5. It 

 is the terminal portion of a penultimate pinna, which shows several 

 ultimate pinnae that pass into pinnules toward the tip of the principal 

 pinna. The ultimate pinnae in the lower portion of this fragment carry 

 small, triangular, falcate pinnules which, altthough they are for the most 

 part poorly preserved, show the character of C. jmrva. Fig. 6 represents 

 a fragment of an ultimate pinna from low down on the frond, where the 

 pinnules are of larger size than those repi'esented in Fig. 5. These are 

 exactly like the pinnules of the Lower Potomac formation. 



The plant occurs at localities Nos. 9, 18, and 22. 



Cladophlebis Browniana (Duiiker) Seward. 

 PL LXV, Figs. 9-11. 



1846. Pecopteris Browniana Dunk.: Monogr; d. Norddeutsch. Wealdenbildung, p. 5, 



pi. viii, fig. 7. 

 1874. Alethopteris f Browniana (Dunk.) ScKimp.: Pal. Veg., Vol. Ill, p. 502. 

 1894. Cladophlebis Browniana (Dunk.) Sew.; Wealden Flora, Pt. I, p. 99, pi. vii, 



fig. 4. 

 1S94. Cladophlehis iiiclinata Font. ? in Diller & vStanton : Bull. Geol. Soc. Am., Vol. V, 



p. 450, quoad Cat. U. S. Nat. Mus., No. 3996. (PL LXV, Fig. 9.) 

 1895 [1896]. OladopMehis indinata Font.? in Stanton: Bull. U. S. Geol. Surv., No. 



133, p. 15, quoad Cat. U. S. Nat. Mus., No. 3996. (PL LXV, Fig. 9.) 



From the number of specimens found, and the localities yielding 

 them, a small fern identical with Cladophlebis Broumiana must have 

 l3een one of the most characteristic plants in the flora of the time of 

 deposition of the Shasta formation. The fossils of this species are, 

 however, quite imperfect, being found only in the form of small fragments 

 of ultimate pinnae. They are numerous enough to show the character 



