Ficus. URTICINE-ffi. 17 



same, — for in both leaves the midrib is comparatively thin, — it appears 

 referable rather to this than to the former species, to which its affinity 

 is also marked. This type is Miocene, the species being very closely 

 related to Limits tenuinervis, Lesqx., of South Park, which itself is allied 

 to U. Braunu, Heer, of the Upper Miocene of GEningen. 



Habitat. — Table Mountain, Tuolumne County, California. Voy's Collection. 



FICUS, Tournef. 



Ficus sordida, sp. nov. 



PL IV. Figs. 6, 7. 



Leaves large, coriaceous, entire, broadly ovate or nearly round, obtuse or pointed, truncate 

 or slit/nth/ rordate at the nearly equilateral base, palmately Jive nerved from the top 

 of an enlarged thick petiole ; nervation coarse, camptodrome. 



Of the two leaves which represent this fine species, one, nearly round, 

 is twelve centimeters broad, ten and a half centimeters long, slightly 

 contracted toward the very obtuse point. The other, thirteen and a half 

 centimeters long, is more enlarged toward the subcordate base, where 

 it measures eleven and a half centimeters, rapidly narrowing upwards to 

 an acute point. The lateral nerves curve in passing to the borders, the 

 inner pair ascending to near the top, there parallel with the secondary 

 nerves, three pairs of them, the lower one at a greater distance from the 

 base, and thinner than the middle. The surface of these leaves is black, 

 somewhat crumpled or rather smooth, but deeply cut by the nervation, 

 and irregularly wrinkled. The nervilles, in right angle to the veins, 

 obliquely divide in anastomosing, and by subdivisions constitute an irreg- 

 ularly comparatively large polygonal areolation. 



This species, though of the same type as the following, is evidently 

 different from it. It is comparable, even apparently closely allied, to the 

 fragment of leaf described by Heer as Ficus ? grcenlandica, Flor. Arct, II. 

 p. 472, PI. LIV. Fig. 2. Another fragment, less complete, is figured in 

 the same work, I. PI. XIII. Fig. G. The nervation is about of the same 

 character. In the Greenland leaves, however, the primary veins are 

 more slender, the leaves smaller, and the areolation more compact. 



Habitat. — Chalk Bluffs, Nevada County, California. Voy's Collection. 



