Gress : Fossil Plants of the Dakota. 321 



52. Grewiopsis flabellata (Lesquereux) Knowlton. 

 Populites flabellata Lesquereux, American Journal of Science, and Arts 



(second series), XLVI, 1868, p. 94. 

 Populites fagifoUa Lesquereux, \J. S. Geological Survey. Hayden, 1S72, p. 442. 

 Grezviopsis flabellata (Lesquereux) Knowltox, Cretaceous Flora. Report of 



U. S. Geological Survey, VI, 1874, p. 97, PI. 3, figs. 2, 4, and PI. 24, fig. 3. 



Knowlton, Grewiopsis Haydenii Lesquereux = Grewiopsis flabellata. U. 



S. Geological Survey, Bulletin No. 152, 1898. 



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

 oval with an obtuse apex and a truncate or slightly cuneate base. 

 The petiole is 1.5 cm. long (a portion is perhaps broken off). The 

 midrib is straight, rather thick at the base, but tapering rapidly to the 

 apex. There are about seven pairs of secondary veins, which are 

 straight. The lowermost secondaries diverge somewhat as they ap- 

 proach the margin, while the uppermost are parallel. The sec- 

 ondaries are branched on the lower side and are craspedodrotne. In 

 outline the leaf resembles our modern poplar leaves. 



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

 taceous). Chas. Sternberg Collection, from the U. S. National Mu- 

 seum, Accession No. 4799. Carnegie Museum, Pittsburgh, Pa. {No. 

 64). 



Remarks: There are three specimens in the Baron de Bayet Collec- 

 tion from Ellsworth County, Kansas, which I have also referred to 

 the same species. No. 64a is larger than No. 64, being about 10 cm. 

 long and 8 cm. wide. The venation is not distinct, but in outline and 

 general appearance it resembles Grewiopsis Haydenii Lesquereux. I 

 have hesitated somewhat to refer the other two specimens (64b and 

 64c) to the same genus and species. The larger of these two (64b) 

 shows serration very similar to that shown by Lesquereux in fig. 3, 

 PI. 24, Cretaceous Flora, op. cit. The venation, while not very dis- 

 tinct, is also very similar. These three specimens bear C. M., Acces- 

 sion No. 2348. 



UMBELLALES. 



Family ARALIACE.E:. 



Genus Aralia. 



53. Aralia Wellingtoniana Lesquereux. 

 Aralia Wellingtoniana Lesquereux, The Flora of the Dakota Group, U. S. 

 Geological Survey, Monograph XVII, 1892, p. 131, PI. 21, fig. i ; PI. 21, 



