264 TTN'TTEn STATES GEOLOGICAL SURVEY— TERTIARY FLORA. 



S:ipiEi(ic]s catidalns, Lesq:s. 



Plato XLVIII, Fig. C. 



Sapindiis cniidalus, Le.srix., Annual Report, H7'3, pp. oHO, ot)?. 



Le.nllets souiewh.at thick ami membrauacoous, Kes.sile, very entire, iueipiilateral, ronnded to Ibo 

 base, oval-oblons, abinptly narrowed into a loaj;, sli.arply pointed acumen. 



The lent" i.s coinpaiafivclv large, eleven ceiifiineters long, tour and a 

 half cenluneters broad, one of the .sides measuring two centimeters; for, 

 like all our fo.^sil species, it is inequilateral, entire, and with a |)innate, camp- 

 todromc nenafion. By its form and nervation, it resembles S. faldfoUus, M. 

 Br. in Heer, Fl. Tert Helv., p. Gl. pi. c\ix, the areolation being of the same 

 chaiaeter as in iig 1 h. But the leaflet was evidently sessile, like those of 

 8. demifolius of the .same work (pi. c.\x), and it differs from l^oth l)y its 

 scarcely falcate outline, its broader size, and its long, narrow acumen. 



Habitat. — Golden, Colorado, and Black Buttes, Wyoming. 



Sapiiitius sicllarisefoliiis, sp. uov. 

 Plato XLIX, Fig. 1. 

 Sapindua arigiwtifoliiin, Lesqx., Annual Report, lSi3, p. 415. 



Leaves small, linear, imparl pinnate; leaflets mostly alternate, lanceolate, acuminate, rounded in 

 narrowing to a .se.s.sile base ; nervation ob,solete. 



The branch (fig. 1) seems to represent a fascicle of leaves not yet fully 

 developed. Its connection with the leaflet (fig. 2) upon the same specimen, 

 and also the size of that of fig. 3, which is intermediate, seemed to autiior- 

 ize the reference of the branches and leaflet to the same species. I have, 

 hovyever, received lately, from a ditferent locality, a specimen wliich contra- 

 dicts this reference. It represents one branch l)earing leaflets, and some 

 detached ones of the same characters and size as those of fig. 1. The branch 

 is fidly developed; the rachis, flattened by compression, somewhat broader; 

 the leaflets are sessile, in odd number, and no remains of the following species 

 are mixed wifli tliem. Tiie characters are moreover somewhat different from 

 those of S. angustifoHus ; tiie leaflets, sessile, 'without ])rolongation of the 

 narrowed base, are tliiii, nearly equilateral, and llieretore I now consider tiiis 

 union of \\\v, leaflets of two species closely allie<l in characters as casual. Tiie 

 leaflets of this species are largest nearer their base, and more abrn])tly rounded 

 t(» the point of attachment; the point is more acute and less prolonged. 



IIaijitat. — Near Florissant, South Park, Colorado {Prof. E. I). Co}>e). 

 Near Castello's Ranch, Colorado {Prof. W. A. Brownell). 



