113 



same analogies anil differences are remarked between this leaf and that of 

 Populus leuce, described by Unger, (Flora v. Sotzka, p. 37, PI. xv, Fig. G.) 

 From its nervation, our leaf seems to have also some relation to species 

 of Ficus of the palmate-nerved section, like Ficus asarifolia, Ett., Ficus 

 crenata, Unger, and Ficus grcenlandica, Heer, (Flora Arctica, p. Ill, PI. xiii, 

 Fig. 6.) 



Habitat. — Near Decatur, Nebraska, Hayden. 



Phyllites VANONiE, Heer, PI. xx, Fig. 7 ; PI. xxviii, Fig. 8. 



Leaves small, ovate-lanceolate, pointed, cuneiform to the base ; borders entire ; medial nerve thin ; 

 secondary veins few, scattered, camptodrome. 



Phyllites vanonce, Heer, Phyllites du Nebraska, p. 22, PI. i, Fig. 8. — Lesqx., 

 American Journal of Science and Arts, loc. cit., p. 102. 



The form of the leaf of PI. xxviii, Fig. 8, as far, at least, as regards its 

 cuneate base, and the rare, lateral scattered veins, are the only characters which 

 mark the identity of the two leaves figured as above. The substance of these 

 leaves is rather membranaceous or thickish. 



Habitat. — Near Decatur, Nebraska, Hayden ; Minnesota, Hall. 



Phyllites umbonatus, Lesqx., PL xix, Fig. 4. 



American Journal of Science and Arts, loc. cit., p. 102. 



Apparently a deformed leaf, quadrate in outline, truncate at the base, 

 deeply notched at the top by the splitting of the thick medial nerve, irregu- 

 larly broadly undulate-lobate on the borders ; secondary veins few, at irregu- 

 lar distance, nearly at right angle to the medial nerve, curving in passing to 

 the borders, craspedodrome. 



The border-base is destroyed. 



Habitat. — Near Beatrice, South Nebraska, Hayden. 



Phyllites amorphus, Lesqx., PI. xxii, Figs. 3, 4. 



Two fragments of coriaceous, obovate, entire leaves, gradually narrowed to the base, (broken;) 

 medial nerve deep and narrow ; secondary veins either in right angle to the medial nerve or curved 

 downward or going up in an acute angle of divergence, branching and anastomosing in various abnormal 

 ways. 



Phyllites amorphus, Lesqx., American Journal of Science and Arts, loc. cit., 



p. 102. 



I know nothing more about these fragments but what is described above. 

 They are comparable to some species of Quercus by their nervation, at least. 



Habitat. — Decatur, Nebraska, Hayden. 

 15 L 



