182 DESCRIPTION OF SPECIES. 



Sap i n cl us iuflexus, sp. nov. 

 Plate XXXII, Fig. 2. 



Leaves subcoriaceous, unequilateral at the narrowed base, lanceolate-acuminate ; 

 lateral nerves much curved and following the borders in anastomosing with the upper 

 ones. 



The form of the leaflet and its nervation indicate its reference to this 

 genus. It is distantly related to S. undulatus, Heer, "Fl. Tert. Helv.," 

 Ill, p. 62, pi. cxxi, figs. 3-7. 



Hob. — Florissant. Princeton Museum, No. 763. 



S:i pi ml us lancifolius, sp. nov. 

 Plate XXXII, Figs. 3-6 ; XXXVII, Fig. 9. 



Leaves subcoriaceous or membranaceous, petioled and more or less unequilateral 

 at the rounded base, lanceolate, long-acuminate, very entire; secondary nerves close, 

 parallel, nearly at right angles to the narrow midrib, straight or slightly curved in trav- 

 ersing the lamina, abruptly curving near the borders and anastomosing in simple bows- 



These leaflets, 6k to 7 centimeters long and more or less than 2 centi- 

 meters broad, have the lateral veins close, parallel, united by oblique 

 simple nervilles and nearly without branches. They are distinctly related 

 to S. G-rcecus, Ung., "Fl. v. Kumi," p. 49, pi. xii, figs. 1-23. In this species 

 the veins are equally close and numerous at right angles to the midrib and 

 the leaves have the same form; they are, however, generally smaller. As 

 in those of Florissant, the petiole is 1 centimeter long. In fig. 9 of pi. 

 xxxvii the leaf is narrowed to the petiole, which appears longer; the veins 

 are not as open nor as numerous; its reference to this species is not certain. 

 Hab. — Florissant. Princeton Museum, Nos. 644 and 64-3. 



DODONjEA. Linn. 



I have referred to this genus the seed, pi. xxxvi, fig. 5, on account of 

 its great likeness to that of D. canescens, D. C, figured by Ettinghausen in 

 "Fl. v. Har.," pi. xxiii, o. The nucleus is, however, harder, more distinct, 

 and the wings also more distantly veined. It is, perhaps, a seed of Ulmus, 

 like those figured, pi. xxvii, fig. 8, from which it differs merely by its 

 slender pedicel. No leaves of Dodoncea have been observed in the Green 



