MULFORD EXPLORATION OF THE AMAZON VALLEY 



291 



site. Petioles 1 to 1.5 cm. loni?, stout, margined, the margins up- 

 ciirved. Blades 1 to 1.') dm. long, 4 to 8 cm. broad, ovate with 

 rounded or obtuse base and obtuse or obtusish summit, shallowly 

 and obtusely sinuate-dentate, thickish, the slender venation very 

 lightly prominent on both sides, the secondaries about 8 on a 

 side, strongly ascending, connected by straightish veins. Cymes 

 compound, at length recurved, little longer than the petioles, 

 peduncled, denselj^ flowered, the bracts and braetlets broader 

 than long, mostly obtuse, the flowers sessile or subsessile, 2 or 3 

 mm. broad. Sepals about half the length of the petals, broader 

 than long, the summit rounded. Petals oval or subrotund, with 

 rounded summit. Disk crateriform, lightly sinuate. Stamens 3, 

 about twice the length of the disk, or more, erect, extrorsely de- 

 hiscent. Stigma sessile, three-parted. 



Bopi Kiver Valley, 3,000 feet, //. H. R)<shij, September 2, 

 1921 (no. 562). A large tree on the river-bank. 



Sapindaceae 

 PauUinia ingaefolia 



Inflorescence and flowers ferruginous or gray-tomentellate, 

 the branches stout, irregularly and heavily angled and sulcate. 

 Leaves extremely variable in size, the longest more than 3 or 4 

 dm. long, sessile or with a long, winged petiole, the leaflets 5, the 

 joints of the rachis broadly winged, the wings herbaceous, suc- 

 cessively wider upward and wider toward their upper part, the 

 widest as much as 1.5 cm. on each side. Leaflets sessile, black- 

 ish glandular at the base, the largest 1.5 dm. long, and 8 cm. 

 wide, oblong or oval, rounded or obtuse at l^oth ends, entire or 

 with one or two obscure teeth toward the summit, thickish, the 

 midrib and 8 to 10 secondaries on each side mostly depressed 

 above and strongly prominent beneath, glabrous above, sparsely 

 and coarsely pilose on the veins beneath, finely and strongly 

 reticulate-veined. Panicles spiciform, cylindric, densely flow- 

 ered, sessile, 5 to 8 cm. long in my specimens, 1 to 1.5 cm. thick, 

 subtended by a pair of coriaceous, ciliate, brown, many-ribbed 

 oblanceolate obtuse bracts about 2 cm. long, these apparently 

 substituting the tendrils, which are not present. 



Rurrenabaque, 1,000 feet, 0. E. White, October 15, 1921 {no. 

 1275). 



PauUinia pendulifolia 



Younger portions and inflorescence finely or sparsely puberu- 

 lent, the branchlets and branches of the inflorescence strongly 



