DESCRIPTION OF SPECIES. Ill 



DiOSPYROS PSEUDOANCEPS Lesq. 



PI. XXII, FiR. 1. 



Keport of the Geological State Survey of Minnesota, by Prof. N. H. Winchell, unpub- 

 lished. 



Leaf coriaceous, elliptical-oval, obtusely cuneiform to tlie base; borders 

 entire; inediau nerve strong; secondaries few, curved in trax-ersing- the 

 lamina; nervilles irregular in direction, except as the l»r;inches of tlie second- 

 aries, anastomosing in festoons along the borders. 



The leaf, which is 4'''" broad, is apparently 7 to S"'" long, the upper part 

 being destroyed. Comparing it to 1). aiiceps Heer (Fl. Tert. Helv., vol. 3, 

 p. 12, PI. cii, Fig. 17), the affinity of the characters is really striking. In 

 the American specimen the base of the leaf is only slightly less rounded; 

 the lateral nerves are as irregular in distance; those of the lower ])air 

 closely follow the borders in a continuous series of bows formed by anasto- 

 mosis from a superior nerve to a marginal inferior veinlet or to ujjjjer sec- 

 ondaries; the thin nervilles, variable in distance, are either at right angles 

 to the secondaries and obsolete or pass from the median nerve to join the 

 secondaries at a distance or in irregular or abnormal direction. As the leaf 

 is fragmentary the comparison of the characters of the nervation can not be 

 followed in the upper part; but as in Heer's Fig. 17, one sees near the line 

 of fracture of the leaf two pairs of opposite secondaries ascending and 

 curving towards the borders under the same angle of divergence. 



Habitat: North side of the Big Cottonwood River, near New Ulm, 

 IMinnesota. No. ,5372 of the collection of Prof N. H. Winchell, who allowed 

 the reproduction of this tine species here. A specimen more recently com- 

 municated, Ellsworth County, Kansas (No. 77fi of the museum of the 

 University of Kansas; E. P. West, collector), shows still more distinctly its 

 remarkable relation to D. anccps. 



DiosPYRos Stebnstrupi? Heer. 

 PI XVI, Fig. 9. 



Fl. Foss. Arct., vol. 7, p. 32, PI. LXiv, Fig. 1. 



Leaves elliptical-ovate, acute or constricted below the ape.x and acu- 

 minate, attenuated to the base, entire; secondaries curved in traversing the 

 blade, branching, camptodrome and areolate along the l^orders. 



The species is represented by two fragmentary leaves upon the same 

 specimen. The leaves are about of the same size and form as those figvu'ed 

 by Heer (loc. cit.) from Patoot. The secondaries are either distant as in Fl. 



