MULFORD EXPLOKATION OF THE AMAZON VALLEY 



315 



mm. lon<>-, 4 mm. in diameter, densely setnlose at the apex, the 

 ribs Avitli a short, sharp tubercle at the center, the 5 alternate 

 lobes prolonged beyond the ovary into erect, fleshy, oblong, 

 roniided lobes, 2 mm. long by 0.8 mm. wide, setnlose, especially 

 at the apex, with i\ai erect hairs 0.6-0.8 mm. long; style stout, 

 1 cm. long, 0.9 nnn. in diameter at base, gradually tapering to the 

 blunt stigma. 



Pongo de Quime, about 67° W., 17° S., 0. E. White, 11,500 

 feet, July 12, 1921 {no. 151). 



B. setosum is a member of the section Adesmiae, and related 

 to species 25 to 28 of Cogniaux' Monograph. It is distinguished 

 from any of these by the peculiar setose pubescence of the upper 

 leaf-surface. 



Maieta (?) hispida 



Bristly throughout with stout divergent hairs, the leaves 

 ciliate with the same. Stems slender, terete, flexuous . Leaves 

 alternate, one of each pair being obsolete or represented by a 

 mere vestige, or by a small vesicle, or rarely by a small normal 

 leaf. Petioles 1 to 1.5 cm. long, sometimes twisted, rarely with 

 a small vesicle at its base. Leaves 10 to 15 cm. long, 4 to 6 cm. 

 broad, lance-ol)long, the summit abruptly contracted into a short, 

 narrow and very acute acumination, the base contracted and 

 then rounded and bearing on its upper surface a green or green- 

 ish vesicle with rounded base and of variable form. Leaf finely 

 and irregularly dentate, the teeth triangular and acute and ter- 

 minating in a bristly hair. Leaf thin, bright-green, much paler 

 beneath, with tw^o pair of nerves starting- from near the base, 

 the lower pair slender and terminating in the margin near the 

 summit, the upper joining the midrib near the summit, all promi- 

 nent on the loAver surface and connected by a moderate number 

 of nearly straight, very slender tertiaries, all the venation more 

 or less bristly pilose, the upper portion finely and rather 

 sparsely strigose. Flowers (not seen) mostly one or two in the 

 axil, and usually one upon the opposite side, where a leaf should 

 be, and sometimes borne similarly along slender stems where the 

 leaves are wholly or mostly wanting. Fruits sessile, or nearly 

 so, recurved, each subtended by about 3 closely clasping broadly 

 ovate, carinate and mucronate bracts, half as long as the calyx, 

 the tube of which is campanulate with slightly contracted throat, 

 frequently inequilateral, about 7 mm. long and 4 mm. broad, 

 strongly hispid, or tuberculate with the enlarged bases of the 



