1955] 



PLANTS COLLECTED IN ECUADOR 



149 



nerves, and longer petiole. It also resembles both P. brownsbergense and P. 

 setosum. From the former it differs because of its larger and more acuminate 

 leaves, longer pubescence, and basally vaginate petioles. From the latter it 

 differs because of its shorter peduncles, non-ligulate bracts, and rounded rather 

 than linear stigmas. 



Piper crassinervium H.B.K. Nov. Gen. & Sp. 1: 48. 1815. 



Junction of the provinces of GUAYAS, CAtfAR, CHIMBORAZO & BOLIVAR: foothills 

 of the western cordillera, near the village of Bucay, 300—375 m, June 8-15, E-3830, 



SANTIAGOZAMORA ("Oriente"): valley of the Ri'o Zamora, east of Loja, near 

 Zamora, about 900 m, June 28-July 1, 1944, E-14; uplands along Rio Upano just north of 

 junction with Rio Chupiantza, near Mendez, 515-750 m, Nov 14, 1944, E-992; upland 

 benches along the Rio Paute, near Mendez, 525-750 m, Dec 12, 1944, E-1452\ valleys 

 and cliff-sides of small streams entering Rio Paute, near Mendez, 525—750 m, Dec 13, 

 1944, E-1459; from Mendez to crossing of Rio Paute, 570-630 m, Dec 14, 1944, E-1508. 



Piper brachipilum Yuncker, sp. nov. 



Frutex; foliis elliptico-obovatis, apice acutis, basi subaequilateraliter acutis, 

 supra glabris, subtus villosis, pilis arborescentibus, omnino pinnatim venosis; 

 petiolo fere ad laminam vaginato; drupa globosa glabra; stigmatibus brevibus 

 stylo subcrasso fultis. 



Shrub, up to 3 m tall, the young branches rusty-villous; leaves elliptic- 

 obovate, 15 cm wide x 30 cm long, the apex acute, the base subequilaterally 

 acute, glabrous above, villous beneath, the nerves densely so, the hairs strongly 

 branched arborescent, the margin rather densely ciliate, pinnately nerved through- 

 out, the nerves about 12-14 on each side, submarginally loop-connected, drying 

 firm, subopaque; petiole 3-4 cm long, villous, vaginate near the base; spikes 10 

 mm thick x 10-12 cm long; peduncle 1 cm or more (?) long, villous; bracts round- 

 subpeltate, villous, with a prominent umbonate center; fruit globose, glabrous; 

 stigmas short, on a moderately stout style. 



SANTIAGO-ZAMORA ("Oriente"): Cordillera Cutucu, ca 2° 40' S, 78° W, on a ridge 

 ascending into Cutucu, 900 m, Nov 17-Dec 5, 1944, E-1094 (TYPE). 



The large leaves, pinnately nerved throughout, with conspicuously branched 

 hairs on the lower surface, and the long-stylose fruits are distinctive characters 

 of this species. The leaf shape and arborescent hairs distinguish it from P, rio- 

 tintasense to which it bears a superficial resemblance. 



Piper pseudo-curvatum Trel. Field Mus. Publ. Bot. 13(2): 216. 1936. 



SANTIAGO-ZAMORA ("Oriente"): Cordillera Cutucu, ca 2° 40' S, 78° W, opposite 

 Chupiantaz, 600-690 m, Nov 17, 1944, E-1048. 



This specimen agrees very well with the description of this Peruvian species. 



Piper densiciliatum Yuncker, sp. nov. 



Frutex; foliis oblongo-lanceolatis, apice obtuse acutis, basi cuneatis de- 

 currentibus, glabris, glanduloso-punctatis, margine conferte ciliatis, omnino 

 pinnatim venosis; drupa globosa glabra; stigmatibus ligularibus recurvis stylo 

 subulato aequilongo fultis. 



Shrub, 2 m tall; upper internodes slender, mostly 2-4 cm long, glabrous or 

 very scantily and evanescently villous; leaves deep green and dull above, 

 glaucous-pale beneath when living, oblong-lanceolate, 4-8 cm wide x 12-20 cm 

 long, the apex bluntly pointed, the base cuneate-decurrent with one side narrowed 

 downward and 2-5 mm shorter, glabrous except the densely ciliate margin, 

 glandular-dotted, pinnately nerved throughout, the nerves 8-12 on each side, with 

 intermediates and rather strong cross-connecting-anastomosing nervules, the ulti- 

 mate nervules very numerous as seen by transmitted light, drying papery, sub- 



