28 THE LATER EXTINCT FLORAS OF NORTH AMERICA. 



p. 88, PL XXXV; XXXVI, figs. 1, 2), the size of the leaf, the number of 

 folds, and the character of the nervation being nearly the same ; but in our 

 plant the petiole is flat or slightly arched, without the central keel of S. major 

 Unfortunately we have as yet obtained no specimen showing the under side 

 of the leaf, and therefore want the important diagnostic character of the 

 length of the point of the petiole. 



From Sabal Lamanonis this species may be distinguished by its greater 

 size, more numerous leaf-folds, finer and more crowded nervation, and by 

 its flat unkeeled petiole. 



Fan-palms are not now found on the Pacific coast above Cape St. Lucas 

 (lat. 23° north), though the average temperature would permit them to grow 

 perhaps as far north as San Francisco (lat. 38°). In the valley of the Mis- 

 sissippi and on the Atlantic coast they extend northward to the parallel 

 of 35°. 



Formation and locality: Cretaceous (Puget Sound group). Bellingham 

 Bay, Washington. 



Sabal grandifolia Newb. n. sp. 

 PL XXV ; LXIII, fig. 5 ; LXIV, figs. 2, 2a. 



Sabal Campbelli Newb. (in part). Boston Journ. Nat. Hist., Vol. VII (1863), p. 515. 

 "Sabal Campbelli Newb." Ills. Cret. and Tert. PL (1878), PL X. 



Leaves very large, 8 to 10 feet in diameter, with eighty to ninety folds; 

 petiole 1£ to 3 inches wide, flat or slightly arched above without a keel 

 above or below; margins smooth, terminating in an arch, often unsymmet- 

 rical, on the upper side, from which the folds radiate; on the under side 

 prolonged into a spine, 6 inches or more in length. 



This species was first made known by specimens brought by Dr. Hayden 

 from the valley of the Yellowstone. These represent both the under and 

 upper surfaces of the leaf, and among them are fragments from the central 

 and marginal portions. Some of these specimens are the originals of the 

 figures given on Pis. XXV and LXIV. A portion of a leaf supposed to 

 belong to this species is represented in PI. LXIII, fig. 5. This was from 

 Fischers Peak, New Mexico. 



In the great number of the remains of palms found in the Tertiary and 

 Cretaceous rocks of the west — trunks, leaves, and fruit — it has been very 

 difficult to define distinct species, and it is probable that many 3^ears will 



