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ARISTOLOCHIACEAE 
Aristolochia yungasensis sp. nov. 
Finely tomentellate except the glabrous upper leaf- cebecn root 
elongated, sparingly branched, fleshy and tuberous-thicken 
ing stems stoutish, costate; petioles 2-3 cm. long, lene couse: 
blades 0.6-1 dm. long from the summit of the petiole, 4-8 cm. 
broad, ovate, strongly cordate, the summit of the sinus as well as 
the lobes regularly rounded, regularly acuminate and obtusish at the 
summit, entire, rather thin, strongly 3-ribbed or 5- to 7-ribbed by one 
or two pairs deflected into the basal lobes, coarsely and slenderly 
reticulate, the principal veins lightly prominent underneath; pedi- 
lightly curved portion of tube 1.5 cm. long, cm. broad, costate, 
dilated suddenly into a broadly ere deep- Lae body about 
1 cm. long; greenish lip nearly 2 cm. long and broad, rounded, the 
base glabrous and strongly seven-nerved, the nerves purple, a pur- 
ple crescent separating the body of the lip which is coarsely pur- 
ple-papillose and ciliate 
‘¢ Abundant in coca-plantations, climbing a few feet and flower- 
ing sparsely, the flower brown and black; called ‘ Vejugo,’ the 
leaves and root used for snake-bite.” Coripata, May 18, 1894. 
(No. 2799.) Species related to A. rumictfolia. 
PIPERACEAE 
(For species not here enumerated see Bull. Torrey Club 25: 
566. 1898.) 
PIPER LANCEOLATUM R. & P. Fl. Per. 1: 36. ‘* A shrub 6-10 ft. 
high, in forest-mould; scarce.” Coroico, September, 1894. (JVo. 
2431-) 
Piper Pavoni (Mig.) C. DC. Prodr. 16°: 294. (Vo. 2642.) 
(Artanthe Pavonit Mig. Lond. Jour. Bot. 4: 450. 1845.) 
PIPER PSILOPHYLLUM C. DC. Bull. Torrey Club 19: 47. 1892. 
(Vo. 2900.) 
Piper supruscum C. DC. Jour. Bot. 4: 217. 1866. oo shrub 
6-8 ft. high, growing in wet forest-mould; scarce.” Coroico, 
September, ces (No. 2475.) 
PIPER triroLium C. DC. Bull. Torrey Club 25: 567. 
(No. 2917.) 
PEPEROMIA BLANDA H.B.K. Nov. Gen. 1: 67. (Wo. 2529. 
Peprromia MuLtispicA C. DC. Bull. Torrey Club 25: 571. 
(WVo. 2039.) 
