738 GEOLOGY OF THE YELLOWSTONE NATIONAL PARK. 



Safindus grandifolioloides n. sp. 

 PL O, fig. 2. 



Leaflets large, of firm texture, ovate-lanceolate, unequal-sided, rounded 

 at base to a well-marked winged petiole, apex acute, slightly falcate; 

 midrib of moderate strength, straight; secondaries about 7 or 8 pairs, 

 strongly alternate, emerging at a low angle and soon curving up and 

 passing along near the border; the secondaries on the narrower side of 

 the leaflet emerge at a greater angle (3(>° to 45°) than on the opposite 

 side; finer nervation not preserved. 



The specimen figured is absolutely perfect so far as outline and 

 principal nervation go. It is just 10 cm. long and 3.7 cm. wide in the 

 broadest portion, which is a little below the middle. The margin is 

 slightly undulate, almost toothed in one part. 



This species so closely resembles Scvpindus grandifoliolus Ward 1 from the 

 Fort Union group, that I have named it grandifolioloides. It differs, however, 

 from the latter in being more markedly inequilateral and in having a 

 winged petiole. It also has fewer secondaries than *S'. grandifoliolus. 



This species is also related to S. obtusifolius Lx., 2 found in the Fort 

 Union group. From this it differs in having half the number of second- 

 aries and a winged petiole, otherwise being much the same. 



Professor Ward's S. alatus 3 from the same place -as S. grandifoliolus has 

 a winged petiole, but differs in being much smaller and in having a broken, 

 loose nervation. It is possible, however, that if more material could be 

 obtained it could be referred to one or the other of these evidently related 



forms. 



Habitat: Northeast side of hill above Lost Creek, bed No. 1, collected 

 by F. H. Knowlton, August 8, 1888. 



Sapindus wardii n. sp. 



PI. XOYIII, figs. 1, 2; PI. XCIX, fig. 5. 



Leaflet coriaceous, broadly lanceolate, rounded wedge-shaped at base, 

 with long acuminate falcate apex; margin perfect!}' entire; midrib thick, 



'Types of the Laramie El., p. 67, PI. XXX, figs. 3-5 (1887). 

 = Cret. and Text. Fl., p. 235, PI. XXVIII, figs. 5-7 (1883). 

 3 Op. cit., p. 68, PI. XXXI, fig. 3, i (1887). 



