306 Annals of the Carnegie Museum. 



the only difficulty is to know to what species to refer it. Since it 

 so closely resembles Lesquereux's figures, op. cit., I have referred it 

 to S. obtusmn. 



Occurrence : All three specimens were in the collection from the 

 U. S. National Museum (C. M., Accession No. 4799). No. 62 is from 

 Ellsworth County, Kansas, the other two had no record of locality. 

 All are of the Dakota Sandstone (Cretaceous). Carnegie Museum, 

 Pittsburgh, Pa. {Nos. 62, 62a, 62b). 



Genus Laurus. 



35. Laurus proteaefolia Lesquereux. 



Laurus proteccfolia Lesquereux, Hayden's Annual Report, 1874, p. 342, Pi. 5, 

 figs. I, 2; The Cretaceous and Tertiary Floras, U. S. Geological Survey of 

 the Territories, VIII, 1883, p. 52, PI. 3, figs. 9. 10, and PI. 16, fig. 6; The 

 Flora of the Dakota group, U. S. Geological Survey, Monograph XVII, 

 1892, p. 92. 



Description: Our specimen does not show the base and the apex. 

 The leaf is apparently about 13 cm. long and 3.4 cm. wide below the 

 middle. The leaf gradually narrows from below the middle upward 

 to a long point. It narrows more rapidly to the base. The venation 

 is not distinct. The median nerve is straight. The secondaries show 

 faintly, but apparently are parallel, equidistant, and camptodrome. The 

 original description of this leaf by Lesquereux in Hayden's Annual 

 Report, 1874, fits our leaf very well. Our specimen resembles also 

 those figured in the same report. 



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

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

 ^Museum, Pittsburgh. Pa. {No. 42). Former reports give its habitat 

 as Fort Harker, Kansas. 



ROSALES. 



Family PLATANACE^. 

 Genus Platanus. 



In classifying the specimens representing this genus, as well as 

 some others of related genera, the relationship of such genera as 

 Platanus, Sassafras, Sterculia, Aralia, Liquidambar, and a few others 

 was very evident. Berry has discussed this relationship in his article. 



