New Species of South American Plants 17 



5 to 10 cm. long, 2 to 4 cm. broad, oblong-oblanceolate, with the 

 base somewhat abruptly contracted into a short margined 

 petiole, pungently mucronate at the otherwise blunt summit, 

 coriaceous, the margin varying from sinuate or sub-entire to 

 serrate with setose and pungent erect or incurved teeth, the 

 coarsely and strongly anastomosing venation very prominent 

 on both surfaces, the principal secondaries forking beyond the 

 middle, their branches then again connecting with one another 

 and with those of the adjacent secondaries. Racemes long and 

 slenderly peduncled, elongated and loosely flowered, the bracts 

 subulate and pungent, erect, about 3 mm. long. Pedicels 

 about I cm. long, slender, terete, lightly thickened toward the 

 summit. Sepals and petals similar, about 6 mm. long, ovate, 

 obtuse, thickish. Glands of the petals small and close together, 

 extended into 2 slender nerves. Stamens shorter than the 

 petals, the filaments shorter than the anthers, very stout, 

 oblong in form. Connective of anther prolonged into a short, 

 thick, blunt appendage. Pistil about as long as the stamens, 

 the ovary oval, its width two-thirds of its length, the stigma 

 discoid, nearly as wide as the ovary, obscurely lobed. 



Unduavi, Bolivia, 10,000 feet October 1885 (Rusby No. 

 508), and Buchtien (No. 2845), November 1910. 



Rusby's specimens (the type) were distributed somewhat 

 doubtfully as B. guindiuensis H. B. K., but the additional col- 

 lections of Buchtien show the species to be distinct. 



Cissampelos tomentocarpa. 



Lower leaf-surfaces, etc., very finely cinereous, the inflores- 

 cence and fruits gray-tomentellate. Stems twining, woody, 

 rat'ier stout, terete, finely striate. Petioles 6 to 10 cm. long, 

 very slender, terete, striate, the blades thickish, 10 to 18 cm. 

 long, 5 to 10 cm. broad, ovate with truncate base and with an 

 abrupt, short, acute acumination at the summit, entire, sub- 

 glabrous above, where the venation is more or less impressed, 

 cinereous underneath, where the venation is sharply prominent 

 and coarsely reticulate, 3-ribbed, the laterals starting from the 

 base of the midrib, perhaps with another faint pair near the 

 margin, all connected by straitish, divaricate secondaries. 

 Peduncles short, stout, several-fruited, the fruits very shortly 

 and stoutly pedicelled. Fruit inequilateral, compressed, 2.5 

 cm. long, two-thirds or three-fourths as broad, the margin 

 thickened, twice as wide on one side as on the other, the thick 

 seed occupying about half of the breadth. 



San Buena Ventura, Bolivia, 1400 feet., November 22, 1901 

 (R. S. Williams, No. 616). 



No. 562, from Tumapasa, 1800 feet, January 16, 1902, "a 

 low vine" is, I think, the same. It has narrower leaves, only 



