MULFORD EXPLORATION OF THE AMAZON VALLEY 



223 



rather abruptly bhiut-aeiuninate, acnte at l)ase, rather small 

 (4.5-5.5 X 8-9 em.), [)iiuiately iiei'ved from about the middle, the 

 nerves 4 or 5 X 2, chartaceous, somewhat glossy and very ob- 

 scurely granular beneath; petiole 5-15 mm. long, the longer 

 winged; spikes opposite the leaves, as yet young and small (2 X 

 15 nnn.). blunt; peduncle 10 mm. long; l)raets small, round-sub- 

 peltate, with very narrow eoncolorous margin; flowers sessile, 

 perfect. 



Huachi, head of Beni River, at 3,000 feet, M. Cardenas, 1921 

 {uo. 466). 



Piper bopianum 'l^release 



A shrub ( ?), somewhat nodose, (lowering internodes slender, 

 moderately elongated, at first subliii-sute but glalirescent except 

 near the nodes; leaves obliquely elliptic-lanceolate or oblanceo- 

 late, sharp-acuminate, narrowed to the (sometimes cordulate) 

 base, moderate (5X15-6X14 cm.), pinnately nerved from 

 below about the upper third, the nerves about 6X2, drying thin 

 and dull green, dark-punctulate beneath with the nerves hirsute; 

 petiole scarcely 5 mm. long, hirsute, winged; spikes opposite the 

 leaves, thick and short (5 X 10 mm. when flowering), mucronate; 

 peduncle very short (2 mm.), hirsute; bracts round or triangu- 

 lar-subpeltate, with very conspicuous hairy pale border; flowers 

 sessile, perfect; stigmas 3, minute, terminating a slender style 

 as long as the ovary. 



Bopi River Valley, at 3,000 feet, //. H. Bnshij, 1921 {no. 660). 



Piper Cardenasii Trelease 



A shrub, nodose, flowering internodes rather slender but 

 short, villous-hirsute when young; leaves oblong, gradually 

 pointed, cordulate or cordate, moderate (4^5 X 15-16 cm.), pin- 

 nately nerved from below the middle, the nerves 6 or 7 X 2, bul- 

 lulate in age, microscopically scabrous above, appressed-hairy 

 on the nerves beneath ; petiole very short (3 mm.), hairy, scarcely 

 winged ; spikes opposite the leaves, much curved, as yet young 

 and some 2 X 30-50 mm., rather long-mucronate ; peduncle 10 

 mm. long, crisp-hairy; bracts roundish-subpeltate with narrow 

 margin ; flowers sessile, perfect. 



Pampas near Lake Rogagua, at 1,000 feet altitude, M. Car- 

 denas, 1921 {no. 166.3), type; also same place, H. H. E)ishij {no. 

 1685). 



