136 MESOZOIC FLORAS OF UNITED STATES. 



most of the surface being finely striate. The apparent strong nerva- 

 tion is prol^ably a puckering from longitudinal folds in the leaf. The 

 shape and size resemble these features in Saporta's Yuccites hettangensis. 



PL XXXVII, Fig. 1, gives the largest and best specimen obtained. 

 Fig. 2 represents a small area of it enlarged to show the nerves. 



It occurs, as stated, at localities Nos. 2 and 7, but also at locality 

 No. 19. 



Undetermined leaf No. 1. 



PI. XXXVII, Figs. .3, 4. 



A few detached leaf-like impressions are found at localities Nos. 2 

 and 7 that are too poorly preserved to be definitely determined. They 

 are found as detached scraps. Fig. 3 shows three of them, placed as 

 if once attached to a common support, and Fig. 4 is a pen drawing of 

 one of these. The}^ are strap-shaped in form and narrow slightly toward 

 one end. The opposite ends of these fragments seem to be near their 

 true bases, but the attachment is not visible. They seem to have been 

 thick and succulent and to have had no definite nerves. There is an 

 appearance of irregular nerves of unequal strength, but this is probably 

 a puckering due to pressure. The general character of these objects 

 is suggestive of the leaves, not bracts, of Willicmisonia gigas (L. & H.) 

 Carr., as given by Saporta." Saporta maintains that this Williamsonia 

 did not have the foliage of Zamia gigas (L. & H.), as Carruthers assumed. 



Fig. 4 illustrates the best specimen found. 



Undetermined leaf No. 2. 

 PL XXXVII, Figs. 5, 6. 



One specimen of this leaf was found at locality No. 7. It is a long 

 grass-like imprint, which has a vague fine striation and a seeming mid- 

 rib. The latter is perhaps a longitudinal wrinkle. It has neither base 

 nor tip, but is still 155 nun. long, with a width at one end of 15 mm. 

 and at the other of 12 mm., indicating a narrowing. The seeming 

 midrib shows no vascular -fissue and is vaguely defined. Possibly this 

 is a narrow Yuccites leaf. It is shown in PL XXXVII, Fig. 5, and a 

 small area enlarged is shown in Fig. 6. 



« Plantes Jurassiques, Vol. rV^, pi. ccxlii [xvi], fig. 1. 



