130 Rusby : An Enumeration of South American Plants 



.5-1 cm. long, 1 cm. thick, subtended by sheaths similar to those 

 of the leaves : bracts sessile, nearly 1 cm; long, splitting through 

 the lower side, hirsute : pedicel 3 mm. long, very stout, densely 

 yellowish hirsute, lightly recurved, the fruit disarticulating from 

 its blackish summit : tube of the perianth 1.5-2 cm. long, con- 

 tracted toward the summit and above the fruit, somewhat dilated, 

 pubescent, the outer lobes nearly 3 cm. long, nearly 1 cm., broad, 

 oblanceolate, obtuse, red, strongly veined, the inner nearly 2 cm. 

 long, linear, obtusish, thick and rigid, lying closely in the angles 

 between the wings of the smooth fruit, which is 1.5 cm. long, in- 

 clusive of the styles, nearly 1 cm. broad, strongly winged, short 

 beaked : the persistent styles 2—3 mm. long. 



Yungas, 6000 ft., 1885 (no. 1425). 



Triplaris Boliviana Britton, sp. nov. 



Twigs and veins of the lower leaf-surface minutely puberulent, 

 the inflorescence gray-tomentose : branchlets fistulous, very stout, 

 reddish, the sheaths mere rings : petiole (but one seen) 1.5 cm. 

 long, 4 mm. broad, very stout : blade 3.5 dm. long, 2 dm. broad, 

 regularly ovate, rounded at the base, acute (?) at the apex, en- 

 tire, thickish, the terete and very stout midrib, and about 25 

 pairs of nearly straight secondaries very prominent underneath, 

 the latter spreading at an angle of about 6o°, interarching near 

 the margin, connected by the crooked tertiaries : spikes fascicled 

 along the rachis, mostly branched at the base, .75-2.5 dm. long, 

 6 or 7 mm. thick, with the flowers not yet expanded, very densely 

 flowered, gray-tomentose : bracts 3 mm. long, 5 mm. broad when 

 flattened, densely white-hirsute, the bractlets similar but smaller : 

 buds globoidal, a little more than 1 mm. in diameter : perianth 

 hirsute, deeply parted, the lobes 1.25 mm. long, oblong, obtuse : 

 stamens exserted, the anthers reddish, large : pistillate flowers not 

 seen. 



Junction of Rivers Beni and Madre de Dios, Aug., 1886 



(no. 1243). 



PIPERACEAE. 



Piper angustifolium Fl. Per. 1 : 38. Yungas, 6000 ft., 1885 

 (no. 2175). 



Piper Blanchctii (Miq.) C. DC. Prod. 16: 318 {Artanthe 

 Blanehetii Miq. Syst. Pip. 473). June, of Rivers Beni and Madre 

 de Dios, Aug., 1886 (no. 2183). 



Piper calocoma (Miq.) C. DC. Prod. 16 : 264 {Artanthe calo- 



