496 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
Leaves papery to coriaceous, serrulate to dentate, 
Filaments 0.4 mm. long, about one-fifth as long as anthers; 
anthers much more than half as long as connective 
scales___-------- 24. R. brachythrix, 
Filaments 0.6 to 1 mm. long, half as long as anthers; 
anthers about half as long as connective scales, or less. 
Leaves coriaceous, sharply serrulate, densely prominulous- 
reticulate on both sides_______ 25. R. melanodenta. 
Leaves papery to pergamentaceous, obscurely serrulate 
or obtusely dentate, not densely prominulous-retic- 
ulate. , 
Petals 4 mm. long, glabrous; leaves faleate-acuminate. 
26. R. falcata. 
Petals 4.5 to 6 mm. long, ciliate or ciliolate at least 
at apex; leaves obtusely short-pointed. 
Sepals thick, strongly striate; petals ciliolate-tufted 
at apex_______-_-________ 27. R. brevipes. 
Sepals thin, not strongly striate; petals short-ciliate. 
28. R. defiexa. 
Anthers not appendaged at apex. 
Filaments 0.3 mm. long, about one-eighth as long as the connective 
scales____---_-- 29. R. ovalifolia. 
Filaments 0.4 to 1.5 (usually 0.7 to 1) mm. long, one-fifth to two- 
thirds as long as the connective scales. 
Flowers subsessile; capsule 4 to 5 cm. long. 30. R. macrocarpa, 
Flowers distinctly pedicellate; capsule (not known in all the 
species) 2 cm. long or less, 
. Filaments nearly or quite as long as anther cells. 
Leaves 4 to 6 cm. long; connective scales entire. 
31. BR. juruana. 
Leaves 6 to 23.5 em. long; connective seales erose. 
Leaves 6 to 11.5 em. long; placentae 1-ovulate, 
32. R. viridifolia. 
Leaves 13 to 23.5 em. long; placentae 2-ovulate. 
Leaves oblong or ovate-elliptic; connective scales lance- 
ovate________- 33. R. scandens. 
Leaves obovate; connective scales elliptic-oblong,. 
34. R. deflexiflora, 
Filaments one-half or rarely two-thirds as long as anther cells, 
or less. 
Connective scales distinctly erose. 
Petals about 3 mm. long__________________ 13. BR. riana. 
Petals 5.5 mm. long_____________ 22. R. guatemalensis. 
Connective scales entire or merely obscurely erose chiefly 
below. 
* Filaments about twice as long as the glands; sepals 2.4 to 
2.7 mm. long_--------__-_-________ 27. R. brevipes. 
Filaments not twice as long as, sometimes shorter than, the 
glands; sepals 1.2 to 2 mm. long. 
Filaments more than half as long as anther cells; con- 
nective scales 2.2 mm. long. 
Leaves hispid-pilose and densely puberulous on the 
veins beneath; connective scales ovate. 
35. R. pubipes. 
