Gress: Fossil Plants of the Dakota, ■ 327 



long and 4.5 cm. wide. The midvein is straight and thick. There 

 are six or seven pairs of secondary veins, which are straight, equi- 

 distant, and parallel. The lowermost pairs are branched on the under 

 side, the veins and branches passing to teeth in the dentate margin. 

 The leaves correspond to Ward's description (/. c.) of Viburnum Les- 

 qucrcuxii, but do not resemble in shape any of the varieties figured by 

 him. 



Note: I found with the one leaf a loose label bearing the name 

 " Viburnum dakotensc intermedium," but I can not find any such 

 variety in existence. Probably the unknown person who identified 

 this leaf intended to make a new variety, which might be advisable. 

 There are two specimens of this leaf. The one is almost perfect 

 (petiole wanting) and rather distinctly veined; the other merely 

 shows the shape of the leaf. I think they are impressions of the same 

 leaf, as the two seem to fit together. 



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

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

 Museum, Pittsburgh, Pa. {Nos. 32, 32a). 



61. Viburnum Lesquereuxii var. cominune Lesquereux. 



Viburnum Lesquereuxii \ar. cointnune Lesquereux, The Flora of the Dakota 

 Group, U. S. Geological Survey, Monograph XVII, 1892, p. 122, PI. 53, 

 fig. 2. (See footnote, page 121, by Ward.) 



Description: There are two specimens of this leaf. The one is 

 about 5.5 cm. long and 4.5 cm. wide near the middle. The other leaf 

 is about 3.7 cm. long and 3.1 cm. wide. Both leaves are almost per- 

 fect, showing very distinctly the veining, dentition, and areolation, 

 The larger leaf is a little more rounded than the more oval smaller 

 one. The variation is not sufficient to place them under different 

 species and I think not even sufficient to make separate varieties. 



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

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

 Museum, Pittsburgh, Pa. {Nos. 26, 26a). 



62. Viburnum sphenophyllum Knowlton. 



Viburnum sphenophyllum Knowlton, in Lesquereux, The Flora of the Da- 

 kota Group, U. S. Geological Survey. Monograph XVII, 1892, p. 123, PI. 53, 

 fig. 4. 



ANN. CAP MUS., XIII. 22, FEB. 21, 1922. 



