18 DESCRIPTIONS OP POSSIL PLANTS. 



Quercus pseudolyrata Lx., var. brevifolia, n. var. Plato x, tig. 2. 

 One specimen ; Museum number, 2568. 



Quercus pseudolyrata Lx., var. latifolia, u. var. Plate XII, tig. 1. 



Two specimens; Museum number, 2570. 

 Quercus pseudolyrata Lx., var. obtusiloba, n. var. Plate x, Fig. 3. 



Two specimens; Museum number, 25G9. 

 Populus glandulifera TIeer. 



Is right according to Scbimper's description and also to my figures 

 of the species in "Cret. and Tert. Fl." PL xlvi, fig. 4, which is better 

 than any of Heer's (Fl. Tert. Helv., PI. lviii), the secondaries being at 

 a much greater distance from the primaries as figured by Heer, and 

 also much thinner. 



One specimen ; Museum number, 2545. 



Populus mutabilis Heer. 

 One specimen ; Museum number, 2547£. 



Fagus castaneaefolia Ung. 



Two specimens; Museum number, 2466. 

 Carya elasnoides Heer. 



JJne specimen ; Museum number, 2446. 



Carpinus grandis Uug. 



One specimen ; Museum number, 2440. 



Carpinus pyramidalis Heer. 



One specimen; Museum number, 2439. 



Alnus Kefersteinii Uug. 



Four specimens ; Museum number, 2420. 



Ulmus plurinervia Ung. 



Two specimens; Museum number, 2620. 

 Ulmus califomica Lx. 



One specimen; Museum number, 2621. 

 Ficus? oregoniana, u. sp. Plate ix, tig. :?. 



Leaves ovate, taper pointed, enlarged at and below the middle; 

 rounded to a short thick petiole, entire, medial nerve narrow, second- 

 aries alternate, distant, mucli curved in passing to the borders, campto- 

 drome, separated by thin tertiaries composing the areolation in anasto- 

 mosing with oblique nervilles, meshes very irregular. 



The areolation is somewhat indistinct, the petiole is short, much en- 

 larged at its point of attachment, scarcely l cm long. The relation of 

 this leaf is with Ficus maravignce, (Mass. Fl. Foss., PI. xxxi, f. 7), which 

 is smaller, less enlarged in the lower part, but apparently with the same 

 kind of nervation. 



Two specimens ; Museum number, 2475. 





