i 



MULl'OltD KXPLOKATION OV THE AMAZON VALLEY 303 

 OCHNACEAE 



Ouratea flexuosa 



Glabrous, tho Ijraiiclies recurved or flexuous, mostly stout, 

 gray, more or less annulate. Leaves 6 ciil to 18 cm. long, and 

 2.5 to 5 cm. wide, mostly narrowly oblanceolate, with acuminate 

 and acute summit, and long-acuminate base tapering into a short 

 dark-brown margined petiole about 5 mm. long; thickisli and 

 rigid, slightly lustrous on both sides, iinely and very sharply 

 serrate, the venation slightly prominent on both sides, the mid- 

 rib strongly so, the principal secondaries abruptly upcurved and 

 then erect, connected with the midrib by numerous finer ones, 

 liacemes terminal, short, densely flowered, the rachis thick, 

 stout and nodose from the fallen flowers. Pedicel thick, nearly 

 as long as the sepals, which are 6 to 7 mm. long, 2 mm. wide, 

 lanceolate, thick, dark-colored. Petals about equaling the sepals, 

 ovate, dark-yellow. Anthers subsessile, as long as the petals, 

 narrowl}^ lanceolate, the white pores very small. Ovary 1 mm. 

 wide and about half as long, blackish, the stout stipe about 1.5 

 mm. long, the stout style equaling the stamens. 



In the Bopi River valley, 3,000 feet. Rushy ct White, Au- 

 gust, 1921 {no. 667). 



Ouratea macrobotrys 



Glabrous, the branchlets elongate, slender, terete, densely 

 leafy. Leaves 8 to 16 cm. long, 2.5 to 4 cm. broad, lanceolate, 

 abruptly short-acuminate at both ends, acute, the margined 

 petiole about 7 mm. long; thin, scarcely lustrous, sinuately 

 serrulate, the venation not prominent, the principal secondaries 

 strongly ascending. Racemes (in young fruit) terminal, slen- 

 der, elongate, the rachis minutely downy, the pedicels 8 mm. 

 long. A single flower exhibits lanceolate sepals 6 mm. long, the 

 petals about equaling them. 



At the junction of the Rivers Beni and Madre de Dios, H. H. 

 Rushy, August 1886 {no. 2710). 



A plant collected at Huachi, 1800 feet, M. Cardenas, Septem- 

 ber 4, 1921, in flower {no. 1007), is probably the same, though 

 the leaves are a little broader, oblanceolate and sharply serru- 

 late. 



Calophyllum ellipticurr. 



(Fruiting specimens.) Glabrous. Branchlets short, stout, 

 strongly wrinkled in the dried state, dark-purple or blackish, very 



