Gress : Fossil Plants of the Dakota. 289 



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

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

 Museum, Pittsburgh, Pa. (No. 27). 



Genus Salix. 



7. Salix proteaefolia var. linearifolia Lesquereux. 

 Salix proteccfolia var. linearifolia Lesquereux, The Flora of the Dakota 



Group, U. S. Geological Survey, Monograph XVII, 1892, p. 49, PI. 44, figs. 



1-3. 



Description : Our specimen shows only the lower portion of the 

 leaf. The venation is not visible. The portion is about 5 cm. long 

 and nearly 1.5 cm. wide near the broken end, which probably is near 

 the middle of the leaf. I think there is no doubt that the specimen is 

 a willow, but since the entire apex is gone, I am not positive about 

 the variety. The leaf resembles in outline linearifolia, but is a little 

 wider than those figured by Lesquereux, op. cit. 



Occurrence: Ellsworth County, Kansas (?), Dakota Sandstone 

 (Cretaceous). Baron de Bayet Collection, Accession No. 2348, Car- 

 negie Museum. Pittsburgh, Pa. (No. 65). 



JUGLANDALES. 



Family JUGLANDACE^. 



Genus Juglans. 



8. Juglans arctica Heer. 



Juglans arctica Heer, Flora Fossilis arctica. VI, Abth. 2, 1882, p. 71, PI. 40, 

 fig. 2, and PI. 41, fig. 4C, and PI. 42, figs. 1-3, and PI. 43, fig. 3. 

 Lesquereux, The Flora of the Dakota Group, U. S. Geological Survey, 

 Monograph XVII, 1892, p. 68, PI. 19. fig. 3, and PL 39, fig. 5- 

 Newberry. The Flora of the Amboy Clays, U. S. Geological Survey, Mono- 

 graph XXVI, 1895, p. 62, PI. 20, fig. 2. 



HoLLiCK, Annals N. Y. Academy of Science, 11, 1898, p. 58, PI. 5, fig. 7; 

 Additions to the Paleobotany of the Cretaceous Formation on Long Island, 

 3, Reprint from Bulletin of the N. Y. Botanical Garden, VIII, No. 28, 

 Nov. 21, 1912, p. 157, PI. 164, figs. 3, 4; The Cretaceous Flora of Southern 

 N. Y. and New England, L'. S. Geological Survey. Monograph L, 1906, p. 

 54. PI. 9. figs. 6-8. 

 Berry, The Flora of the Clift'wood Clays, Geological Survey of N. J., Part 



