200 UNITED STATES GEOLOGICAL SURVEY— TEETIAEY FLORA. 



ing thinner or nearly effaced, as in fig. 4. All the divisions are camptodrome, 

 the lateral nerves passing at an angle of 40 to 50°, nearly straight toward the 

 borders, where they abruptly curve, anastomosing in simple bows; the ner- 

 villes, oblique to the secondary veins, are strong, either simple or more rarely 

 divided in the middle; the details of areolation are obsolete. Though the 

 surface of these leaves is cut by the deeply impressed nervation, it is smooth, 

 nearly polished. 



Habitat. — Golden, Colorado. 



Ficus! Smithsonian a, Lesqz. 

 Plate XXXII, Fig. 5. 



Juglans Smiihsoniana, Lesqx., Supplement to Annu^Jteport, 1871, p. 16. 



Leaf coriaceous, smooth, lanceolate, gradually tapering upward from above the base, and acumi- 

 nate; borders entire and undulate ; middle nerve flat and broad ; lower pair of lateral veins more oblique 

 and ascending higher; nervation camptodrome. 



This fine leaf, rounded and narrowed to the base, has slightly unequal 

 borders, the secondary veins irregular in distance, and nervilles in riglit angle 

 to the midrib and oblique to the lateral nerves. Of its characters, none is 

 clear enough for a definition of its generic relation. It has a degree of like- 

 ness by its form to Ficus Falconeri, Heer (Foss. Fl. of Bovey Tracy, Phil. 

 Trans., 1862, p. 1060), especially like fig. 7 of pi. Ixiv. The leaves of the 

 English species are, however, more narrowly attenuated to the hase. I con- 

 sidered it at first as a Juglans, but the coriaceous leaves are against this 

 reference. Count Saporta supposes that it may represent an Aralia. 



Habitat. — Raton Mountains, New Mexico {Dr. F. V. Hayden). 



§ II. — Palmately-nerved leaves. 

 Ficus occidentalis, Lesqx. 

 Plate XXXII, Fig. 4. 

 Dombeyopsis occidentalis, Lesqx., Annual Eeport, 1872, p. 380. — Schp., Pal. V^g6t., iii, p. 607. 



Leaves comparatively thick, coriaceous, truncato-cordate at the base, narrowed upward into an 

 obtuse acumen, palmately triple-nerved; lateral veius equidistant, parallel, camptodrome. 



A number of finely preserved specimens of this species have been 

 obtained from the same locality, all, however, deprived of the petiole. Their 

 characters, form and nervation, as well as the coarse surface of the leaves, 

 deeply furrowed by the nerves, relate them to the following species. The 

 leaves are all of the same large size, twelve centimeters long or more, about 



