310 COCKERELL : FOSSIL PLANTS FROM FLORISSANT 



Amelanchier Scudderi sp. nov. 



Represented by a leaf, which as preserved is very pale reddish, 

 and is perfect except for the lack of the left apical part, due to the 

 loss of part of the slab. Length about 45 mm., breadth about 

 38 mm., the apex broadly rounded, and the base very broadly 

 cuneate (forming a very obtuse angle), the shape being much as in 

 the living A. alnifolia Nutt. The serrations begin about 27 mm. 

 from the bases measuring along the margin, and are large and 

 entire, shaped as in A. rotioidifolia, 8 or 9 in number on each side. 

 The lateral nervures are from 6 to 8 mm. apart, mostly simple, 

 but one branches 5.5 mm. from base. (Figure 4.) 



Fig. 4. Amelanchier Scudderi Cockerell. 



(//, 



Named 



M 



same beds. It is perhaps as much like a Mains as an Amelanchier, 



genus. 



alnifolia 

 typ. 



Florissant ; there is, however, a good deal of resemblance to the 

 leaf figured by Lesquereux as Planera Ungeri, the difference being 

 in the partial branching of the lateral veins, the broader form, 

 more obtuse apex and base, and wider angle of departure of the 

 lateral veins. 



