CRETACEOUS FLOEA. 17 



Dlospyros, Clssus.] 



DlOSPTROS PSEUDO-ANCEPS, Sp. nOV. 

 PL. B, FIG. 8. 



Leaf subcoriaceous, elliptical-oval, cuneiform to the base, border very entire, medial 

 nerve strong; secondaries irregular in distance, few, curving in traversing the lamina; 

 nervilles irregular in direction except as thin branches of the secondaries anastomosing 

 in festoons along the borders. 



The leaf 4 cm. broad is apparently 7-8 cm. long, the upper part being destroyed. 

 Comparing it with Diospyros anceps Heer, Fl. Tert. Helv. Ill, p. 12, PI. CII, f. 17, it 

 is scarcely possible to point out a difference marked enough to be considered as spe- 

 cific. The base of the leaf in the American specimen is merely slightly less rounded; 

 the lateral nerves are as irregular in distance, those of the lowest pair close by each 

 other, follow the borders in continuous series of bows formed by anastomose from 

 the superior to a marginal inferior veinlet or to the borders; the nervilles are either 

 at right angles to the secondaries and obsolete or posing from the medial nerve to 

 join the secondaries at a distance, and in irregular or anormal direction. The leaf 

 being fragmetary and the upper part destroyed, it is not possible to follow the char- 

 acters in its upper part. 



Hab. North of the Big Cottonwood river, near New Ulm, Minnesota. 



Mus. Beg. No. 5372. 



ClSSCS BKOWNIANA, Sp. HOV. 

 PLATE A. FIG. 8. 



Leaf oval, angularly undulate, obtuse at apex, the borders slightly turned down at 

 base, penni nerve ; primary nerve straight, half cylindrical, secondaries half open, sub- 

 opposite, parallel, rigid, the lower pairs branching, the upper simple or branching ; all the 

 divisions craspedodrome ; nervilles straight at right angles to the nerves. 



The leaf is evidently petioled, the base being inclined downward as slightly 

 decurring ; but the pedicel is destroyed. Except the petiole, the leaf is fully 

 preserved, 6 cm. long, 4| broad. The lateral nerves, 6 pairs, are at an angle of 40, 

 the marginal vein is marked on one side only. 



The species is comparable to Cissus atlantica, or Cissus nimrodi Ett., Bilin. Fl. Ill, 

 p. 3 and 4, PI. XL, f. 3-10, two species of the Tertiary, which differ from it by the 

 leaves being smaller, more distinctly irregularly undulate-dentate, and short pointed. 

 The nervation is of the same character. 



Hab. North side of the Big Cottonwood river, near New Ulm, Minnesota, 

 Afus. Beg. No. 5156. 

 -2 



