AKT. 12 FOSSIL PLANTS FROM WYOMING BROWN / 



tification in terms of past work. I venture, therefore, to name a new 

 species, with the reservations necessitated by all such paleobotanic 

 uncertainties. 

 Holotype.—V.S.'NM. No. 39143. 



SASSAFRAS BRADLEYI. new species 



Plate 2, Figure 5 



Only one specimen of this species was found. It is an obtuselj^ 

 trilobate leaf 5 cm long and 5 cm wide from tip to tip of the lateral 

 lobes. The upper maigin of the lateral lobes makes an approximately 

 right-angle sinus with the margin of the middle lobe. Margin entire 

 and noticeably thickened. Petiole of unknown length. The two 

 lateral primaries arise from a point 3 cm above the top of the petiole 

 and spread to the apices of the lobes. A few widely spaced second- 

 aries arise at angles of 55° and curve upward to the margin, where 

 they are lost in the thin vein, which arises at the base of the leaf and 

 runs along the margin, giving it a thickened apx^earance. A sec- 

 ondary arises from the midrib and runs to the sinus where it forks, 

 these forks in turn joining the marginal vein. 



This leaf differs somewhat from modern sassafras leaves in having 

 such unusually wide sinuses, but compares well in regard to internal 

 structure. The chief difficulty here, it seems to me, is not whether 

 this leaf ought to be called sassafras but just how it should be dis- 

 tinguished from many variable Cretaceous forms from the Dakota 

 sandstone, Cheyenne sandstone, and elsewhere, called Sassafras, Ster- 

 culia, and Aralia. 



No fruits of any kind were found in this collection and, therefore, 

 an important source of evidence as to the affinity of these leaves is 

 not at hand. 



I take pleasure in naming this species for "W. H. Bradley, of the 

 United States Geological Survey. 



Holofijpe.—U.S.^M. No. 39144. 



NYMPHAEACEAE 

 NELUMBO WEYMOUTHI, new species 



Plate 1, Fiquke 1 



Only the central portion of this leaf is preserved, so that it is 

 impossible to state exactly the size and shape of the entire leaf. 

 There are 12 strong radiating primaries, some of which fork within 

 a centimeter of the center and produce toward the margin the charac- 

 teristic venation network of Nelumbo. Evidently the leaf was not 

 large, possibly 6 to 8 cm in diameter, and was probably orbicular in 

 shape. 



