318 Annals of the Carnegie Museum. 



tiary venation is not visible. The venation resembles that of Proto- 

 phyllum qucrciforme Hollick (Bulletin Torrey Botanical Club, XXII, 

 May, 1895, P- 227, PI. 237, fig. I. 



Occurrence : Ellsworth County, Kansas, Dakota Sandstone (Cre- 

 taceous). Baron de Bayet Collection, Accession No. 2348, Carnegie 

 Museum, Pittsburgh, Pa. {No. 51). 



48. Protophyllum viburnifolium Grass, sp. nov. (Plate XV, figs, i 



and 2.) 



Description: The leaf is about 7 cm. long and 6 cm. wide. It is 

 ovate in outline, with a short-pointed (?) apex (broken) and a very 

 distinctly heart-shaped or peltate ( ?) base. The midrib is of medium 

 thickness. There are six or seven pairs of secondaries, sub-opposite. 

 The lowermost pair is very much branched on the lower side. The 

 first branch, which is very thin, originates near the midrib and ex- 

 tends backward along the petiole. The second pair of secondaries 

 emerges from the midrib close to the first pair and diverges at a 

 much more acute angle than does the first pair. This pair is also 

 much branched on the lower side. The distance between the origin 

 of the second and the third pairs of secondaries is about twice the 

 distance between the origin of the first two pairs. The remaining 

 upper pairs of secondary veins are parallel and contain fewer branches 

 than do the lower ones. Tlie tertiary veining is simple and at right 

 angles to the secondaries. The margin is apparently slightly undulate 

 or toothed, but this character is not distinct. This leaf, as well as 

 Protophyllum ovatum, resembles very much some of the Viburnums 

 described and figured by Ward, Bulletin U. S. Geological Survey, 

 No. 37, 1887. I think, however, that the nearly, if not altogether, 

 peltate base of the smaller leaf and the arrangement of the secondary 

 veins at the base of both leaves, particularly of the larger, show suffi- 

 ciently close relationship to Protophyllum to justify referring them 

 to that genus. 



Occurrence: Ellsworth County, Kansas, Dakota Sandstone (Cre- 

 taceous). Baron de Bayet Collection, Accession No. 2348, Carnegie 

 Museum, Pittsburgh, Pa. {No. 50). 



1 



