13(i MESOZOR' FLORAS OF UNITED STATES. 



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

 tion is prol)al)l\' a puckering from longitudinal folds in the leaf. The 

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



PI. XXXVII, Fig. 1, gives the largest and best specimen ol)tained. 

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



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

 Xo. 19. 



rndetenninod leaf No. 1. 



PI. XXXVII, Figs. 3, 4. 



A few detached leaf-like impressions are found at localities Xos. 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. They are strap-shaped in form and narrow slightlj^ 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 Willimnsonia gigas-{L. & H.) 

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

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



Fig. 4 illustrates the best specimen found. 



Undeterinined 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 mm. long, with a width at one end of 15 mm. 

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

 midi-ib shows no vascular ftssue and is vaguely defined. Possibly this 

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

 small area enlarged is shown in Fig. 6. 



« Plantcs Jurassiqucs, Vol. IV, pi. ccxlii [xvi], fig. 1. 



