56 



CONTRIBUTIONS PROM THE NATIONAL BERBARITTM. 



samaras broad-orbicular, 2 cm. wide, Dot as long, 



retuse at both ends. 34. P.netMnexictn 



Leaflets Bubequal, paler beneath with fine baira; 

 (><ld one lance-elliptic, 7 cm. lorn:, very acute, 

 entire; Bamarae only L.5 cm. broad, the length 

 less, retoseal apex. 36. /'. acutifolia. 



Leaflets of a bright almost Bhining green, only 

 lighter beneath, odd one 9 cm. long, broadly 

 elliptic, cuspidately acnte; Bamaras 3 cm. long, a 

 trifle wider, orbicular, Buteonlate, and obcordate. 36. /'. megaearpa. 



Leaflets light clear green above, paler and yellow- 

 ish beneath, odd one 5 cm. long, lanceolate, 

 hardly acute; samaras orbicular, 5 cm. across, 

 truncate at base, at apes emarginate. 37. /'. taetissima. 



TWIGS almost always glabrous, never chestnut-brown, in a 

 few cinnamon-reddish, in most straw-colored or whitish and 

 Bhining. Foliage never .lark, both faces usually yellow-green 



(almost the hue of Orange Or lemon leaves). 



Leaves in maturity Bubcoriaceous or almost coriaceous. 

 Leaflets Btrongly dotted, slightly pubescent, odd one 

 ovate, 5 cm. Long, blunt at apex, and emarginate; 



samaras orbicular, 1.5 cm. across. -'is. /'. vefTUCOta, 



Leaflets much less dotted, glabrous, odd one obovate, 

 5 cm. lom:. acutish; samaras suborbicular, 1.7 cm. 



an. tSS. 39, /'. <i,n/<'i<j<ns. 



Leaflets glabrous, coarsely dotted above, pale beneath, 

 odd one rhombic-lanceolate, 4.5 cm. long, acute, 

 subentire; samaras suhcordate-ovate, 1.5 cm. long. 40. /'. nidus. 



Leaflets glabrous, size and form as in the last, but pale 

 with bloom and almost dotless; samaras orbicular, 

 nearly 2 cm. aero--. -II. /'. pallida. 



Leaflets hardly Bubcoriaceous, almost dotless, odd one 

 obovate, <» cm. long, obtuse, crenate : samaras large, 

 2 cm. broad, not as long, cordate and obcordate. 42. J\ straminea. 



Leaflets small, yellow-green on both facesand glabrous, 

 punctate, odd one ovate-lanceolate, 3.5 cm. loiiL r ; 

 samaras all triquetrous. 4.">. P. nitida. 



Leaflet- glabrous, much punctate, size and form as in 

 the last, but beneath silvery-lustrous : samaras tri- 

 quetrous. 44. /'. argt rtiea. 



Leaflets dull yellow-green on both faces and much 

 punctate, odd one lanceolate, 4 cm. long, obtuse; 

 samaras Large, broadly oval, 2 cm. Long. i-"'. /'. negleda. 



Leaflets small, narrow-lanceolate, acute, hardly 4 cm. 

 long, wholly yellow-green; samaras large for the 

 leaves, triquetrous. L6. /'. triptera. 



Leaflets Larger, narrow-lanceolate, odd one 6 cm. Long; 



samaras large, Hat, suborbicular. 2cm. wide, rounded 



at both ends. 47. /'. lulesa nt. 



Leaflets truly lanceolate, much dotted, odd one 7 cm. 

 long; samaras 2.2 cm. wide, cordate and obcordate. 48. /'. elegaru. 



Leaflets rhombic-lanceolate, only 3.5 cm. long ; Bamaras 

 orbicular, 1.6 cm. aero—, retuseat base; at apex cus- 

 pidate-acute. 49, /'. confinis. 



