Vol. 2 No. 10 



TORREYA 



October, igo2 



FOSSIL FERNS FROM THE LARAMIE GROUP OF 

 COLORADO. * 



By Arthur Hollick 



*L 



(Plates 3 and 4) 



Some twelve or thirteen years ago an extensive collection of 

 fossil plants, from the Laramie (Upper Cretaceous) Group of 

 Colorado, was made by Messrs. George Hadden and R. C. Hills, 

 for the late Dr. J. S. Newberry. This collection is now in the 

 paleobotanical museum of the New York Botanical Garden, and, 

 although partly labeled, was never reported upon by Dr. New- 

 berry. 



Included in the collection are a few ferns, most of which are 

 more or less rare and some of them apparently represent unde- 

 scribed species or varieties. Of these the following have been 

 selected as noteworthy : 



Anemia supercretacea sp. nov. 



General form of frond, also nervation, unknown ; pinnae deli- 

 cate, narrowly conical in outline, gradually tapering to the tips ; 

 pinnules entire, lower ones spatulate, distinct, somewhat decurrent 

 along and forming acute angles with the rachis, upper ones often 

 more pointed or becoming confluent and forming toothed or cren- 

 ulated tips to the pinnae. Plate 3, Figs. 6, 7. 



In reddish shaly sandstone, Florence, Colo. 



Anemia robusta sp. nov. 



General form of frond, also nervation, unknown ; pinnae (?) 

 linear in outline, about 3 cm. in width ; pinnules entire, ovate to 

 subspatulate, with blunt wedge-shaped tips, about 2.5 cm. in 



* Read before the Botanical Society of America, Pittsburg Meeting, July 1, 1902. 

 [The exact date of publication of each issue of Torreya is given in the succeed- 

 ing number. Vol. 2, No. 9, comprising pages 129-144, was issued August 30, 1902.] 



145 



