488 Systematic Paleontology 



genus from the Upper Cretaceous^, and it may also be matched by some 

 of the variant leaves of the existing Sassafras. It is rather smaller 

 but otherwise very close to Sassafras acutilohum Lesq., especially the 

 forms from the Earitan formation which ISTewberry ^ identified as this 

 species. 



It may also be compared with Sassafras protophyllumj a somewhat 

 smaller but otherwise very similar form described by Saporta from the 

 Albian of Portugal. 



Occurrence. — Patapsco Poematioist. Widewater, Dumfries Landing, 

 Virginia. 



Collection. — Johns Hopkins University 



Order UMBELLALES 



Genus ARALIAEPHYLLUM Fontaine 

 [Mon. U. S. Geol. Survey, vol. xv, 1890, p. 316] 



This genus is defined as follows by its describer: 



" Leaves more or less f an-shaped\, divided more or less deeply into three 

 principal lobes, the middle or terminal one subrhombic or elliptical in 

 outline, rapidly narrowed to an acute tip, and separated from the lateral 

 lobes by broad sinuses rounded at the bottom; the lateral lobes divided 

 into two minor lobes, one being larger than the other; the larger one 

 ovate, sometimes inequilateral, and turned upwards; the outer or small 

 one is ovate, and turned outwards; the primary nerves three, radiately 

 diverging from the same or nearly the same point at the base of the leaf, 

 going to the summit of each primary lobe ; from the two lateral primaries 

 a strong branch goes off a short distance above the base on the lower 

 side and extends to the summit of the outer smaller lobes; all the 

 primaries are strong, and send off on each side branches which curve up 

 and anastomose; ultimate reticulation not seen." 



While the specific differentiation within the genus is somewhat different 

 in the present treatment, the foregoing diagnosis will answer in the 



^Newberry, Mon. U. S. Geol, Surv., vol. xxvi, 1896, p. 87, pi. xxv, figs. 1-10; 

 pi. xxvi, figs. 2-6. 



