136 THE LATER EXTINCT FLORAS OF NORTH AMERICA. 



Phyllites obcordatus Heer. 



PI. V, fig. 2. 



Proc. Phil. Acad. Nat. Sci., 1858, p. 266; Ills. Cret. and Tert. PL (J 878), PI. V, fig. 

 2, under Leguminosites Marcouanus. 



This is the leaf described by Professor Heer from a tracing by Mr. 

 Meek and figured in Dana's Manual of Geology with the name Legumino- 

 sites Marcouanus, and described and figured by Lesquereux in his Cre- 

 taceous Flora, page 90, PI. XXVIII, fig. 2, under the name of Bumelia 

 Marcouana. The original tracing now before me, bearing Professor Heer's 

 name written with his own hand, renders the identification easy and certain, 

 and shows, as remarked elsewhere, that the names of this and the associ- 

 ated obovate emarginate leaf have been interchanged. Lesquereux, 

 supposing that Professor Heer had applied the name Leguminosites to this 

 leaf, which he has shown to be long-petioled, and therefore almost certainly 

 not belonging to a leguminous plant, changed the name to Bumelia, but as 

 mentioned elsewhere, the name Leguminosites was applied to another leaf, 

 and this must stand as Phyllites until some good reason can be given for 

 transferring it to another genus, and in that case it would be necessary to 

 retain the specific name obcordatus. 



Formation and locality: Cretaceous (Dakota group). Blackbird Hill, 

 Nebraska. 



Phyllites Vanoisle Heer. 



Pi. Ill, fig. 8. 



Nouv. Mem. Soc. Helv. Sci. Nat., Vol. XXII (1S66), p. 22, PL I, fig. 8; Ills. Cret. 



and Tert. PL (1878), PL III, fig. 8, under Diospyros primczva. 



Note. — So identified by Dr. Newberry, as indicated by memorandum on 

 specimen and margin of plate. — A. H. 



Formation and locality: Cretaceous (Dakota group). Blackbird Hill, 

 Nebraska. 



Phyllites venosus Newb. 



PL XXX, fig. 4. 



Ann. N. Y. Lye. Nat. Hist., Vol. IX (April, 1868), p. 75; Ills. Cret. and Tert, PL 

 (1878), PL XXIV, fig. 4. 



"Leaves thick and fleshy, irregularly oval in outline, rounded or slightly 

 heart-shaped at base, blunt-pointed above, unsymmetrical throughout, mar- 



