306 Rusby: An Enumeration of the Plants 



oblanceolate or obovate, rounded at the narrow base, very short- 

 pointed and very obtuse, distantly and coarsely serrate, very thick, 

 3-ribbed, the venation lightly prominent above, very prominent 

 underneath, the stout secondaries about 4 pairs, the venation very 

 finely reticulate : raceme (but one seen) 2 dm. long, veiy slender, 

 pendulous, very loosely flowered : flowers purple, scarcely 1 mm. 

 broad. 



Mapiri, 5000 ft., Apr. 1886 (no. 1975). " Collected by 

 Pearce at Maro, 3000-4000 ft, 1886. Male inflorescence 

 branched, female simple. Styles 2, 1 mm. long, ovary and young 



fruit with minute stellate hairs" [N. L. B.]. 



Conceveiba Guianensis Aubl. PI. Gui. 2 : 924. pi- 353. Mapiri, 

 2500 ft, May 1886 (no. 2656). 



Conceveiba pubescens Britton sp. no v. 



Staminate plant : — Branchlets, lower leaf-surfaces, etc., stellate- 

 pubescent, the younger portions ferruginous : branchlets stout, 

 purple, very leafy : petioles 2-4 cm. long, very stout, dilated at 

 the insertion, striate, reticulate, deep-purple: blades 1.5— 2 dm. 

 l° n g> -75- 1 dm. broad, ovate, rounded to subcordate at the base, 

 abruptly and obtusely short-pointed, coarsely sinuate-serrate, ex- 

 tremely thick and rigid, smooth above with the midrib and second- 

 aries impressed, the venation strongly and sharply prominent 

 underneath, the secondaries about 6 pairs, strongly ascending and 

 connecting near the margin, the lowest pair much stronger, the 

 straightish tertiaries connecting the secondaries : panicles solitary 

 in the axils, short -peduncled, subulate-bracted at the base, the 

 peduncle and rachis sharply angled, nearly 1 dm. long, the 

 branches few and short, the flowers closely aggregated on the 

 very short branchlets ; buds globose, about 1 mm. broad. 



Pistillate plant (if Mr. Bang's no. 2375 is the same): leave- 

 much thinner, the pubescence nearly obsolete, the lowest seconds 

 aries much longer : spikes almost simple, very slender, very loosely 

 flowered: the flowers sessile and solitary (rarely geminate) at the 

 nodes : calyx parted nearly to the base, the lobes oblong-ovate, 

 obtuse, 1.5 mm. long: ovary 2.5 mm. long, densely white-pilose, 

 ovoid : styles barely connate at the base, 4 or 5 mm. long, 

 strongly flattened, oblong, blunt, purple at the tip, thick and fleshy. 



Yungas, 4000 ft, 1885 ( no - 2655, as to the staminate plant). 



Same locality, Aug. 6, 1894 (Bang, no. 2375, as to the pistil- 

 late plant). Mr. Bang says, "A shrub 10 to 15 ft, high, with green 

 flowers, in wet forest-mould." 



