Gress: Fossil Plants of the Dakota. 299 



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

 graph XXVI, 1895, p. 73, PI. 55, figs. I, 2, 4, 6 ; The Later Extinct Floras 

 of North America, U. S. Geological Survey, Monograph XXXV, 1898, p. 94, 

 PI. 5. fig. 6. 



HoLLicK, The Cretaceous Flora of Southern N. Y. and New England, U. S. 

 Geological Survey, Monograph L, 1907, p. 67. 



Berry, The Flora of the Raritan Formation, Geological Survey of N. J., 

 Bulletin 3, 191 1, p. 130, PL 15, fig. i. 



Description: Leaf thick, ovate-oblong, about 9 cm. long and 4.7 cm. 

 wide, entire, tapering to the petiole. Apex (broken) apparently 

 abruptly acute. Petiole curved, about 2>-2 cm. long. Midvein straight, 

 prominent. Secondaries slender, about ten pairs, alternate, equidistant, 

 camptodrome, branching from the midrib at an angle of about 45°- 



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

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

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



2^. Magnolia obtusata Heer. 



Magnolia obtusata Heer, Flora Fossilis Arctica, VI, Abth. 2, 1882, p. 90, PI. 

 15, fig. 12, and PI. 21, fig. 3 (not seen). 



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

 Monograph XVII, 1892, p. 201, PI. 60, figs. 5, 6. 



Description: Leaf coriaceous, obovate, obtuse, gradually narrowed 

 to the petiole, which is nearly 2 cm. long; margin entire; secondaries 

 simple, curved, camptodrome about five pairs (not very distinct to- 

 ward the apex). The leaf is about 7 cm. long and 4.5 cm. wide at 

 a point about 1.5 cm. from the apex, which is blunt and rounded. 

 The leaf resembles in shape and veining that of Lesquereux shown 

 in PI. 60, fig. 6, op. cit. The petiole is somewhat shorter and the leaf 

 seems to be a little shorter and broader than that of Lesquereux. 



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

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

 Museum, Pittsburgh, Pa. {No. 28). 



26. Magnolia speciosa Heer. 



Magnolia speciosa Heer, Le.squereux, The Cretaceous and Tertiary Floras, U. 

 S. Geological Survey of the Territories, VIII, 1883, p. j2 ; The Flora of 

 the Dakota Group, U. S. Geological Survey, Monograph XVII, 1892, p. 202, 

 PL 60, figs. 3, 4. 



