156 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 2 



4 



SANTIAGO-ZAMORA ("Oriente"): valley of the Ri'o Zamora, east of Loja, along trail 

 between Rio Sabanilla and Canillones Tarobo, 1350-2100 m, June 28-July 1, 1944, E-60. 



Piper falculispicum Trel. & Yun. Pip. North. S. Am. 216. /. 179. 1950. 



SANTIAGO-ZAMORA ("Oriente"): upland along Rio Upano just north of junction with 

 Ri'o Chupiantza, near Mendez, 525-750 m, Nov 14, 1944, E-992. 



This specimen agrees well with those previously examined with the exception 

 that the main nerves are not so strongly cross-connected upward, the spikes are 

 more slender, and the fruit is more trigonous. 



Piper lineolatifolium Trel. & Yun. Pip. North. S. Am. 223. /. 185. 1950. 



SANTIAGO-ZAMORA ("Oriente"): uplands along Rio Upano just north of junction of 

 Rio Chupiantza, near Mendez, 525-750 m, Nov 14, 1944, E-995; Cordillera Cutucu, ca 

 2° 40' S, 78° W, western side of Cutucu, 870-900 m, Nov 17-Dec 5, 1944, E-1074. 



Piper cumanense H. B.K.Nov. Gen. & Sp. 1: 47. 1815. 



SANTIAGO-ZAMORA ("Oriente"): uplands along Rio Upano just north of junction 

 with Rio Chupiantza, near Mendez, 525-750, Nov 14, 1944, £"-989. 



This specimen agrees reasonably well with this species though there are 

 several minor differences. 



Piper dendropse Trel. Field Mus. Publ. Bot. 13: 158. 1936. 



SANTIAGO-ZAMORA ("Oriente"): valley of the Rio Zamora, east of Loja, along trail 

 between Rio Sabanilla and Canillones Tambo, 1350-2100 m, June 28-July 1, 1944, E-59. 



Piper meraense Trel. & Yun. Pip. North. S. Am. 242. /. 210. 1950. 



SANTIAGO-ZAMORA ("Oriente"): above Rio Upano, near junction with Paute, near 

 Mendez, 525-750 m, Nov 13, 1944, E-953; Cordillera Cutucu, ca 2° 40' S, 78° W, junction 

 of Ri'os Itzintza and Chupiasa, 1050 m, Nov 17-Dec 5, 1944, E-1399. 



The leaves on this specimen are somewhat larger than those on other speci- 

 mens seen of this species. 



Piper chimborazoense Yuncker, sp. nov. 



Frutex; foliis subrhombico-ellipticis, scabridis, apice longius acuminatis 

 brevi-mucronatis, basi inaequilateralibus, supra adpresse pubescentibus, subtus 

 villosis, a parte infera pinnatim venosis; ovario ovoideo; stigmatibus sessilibus. 



Intricately branched shrub, 1.5-3 m tall; upper internodes slender, 2-6 cm or 

 more long, retrorsely subhispid; leaves subrhombic-elliptic, somewhat scabrid, 

 the apex sharp-acuminate, shortly mucronate, the base inequilateral, one side 2 

 mm shorter, acute or obtusish, the longer side narrowly rounded, obtuse or 

 cordulate, 4-6 cm wide x 9-15 cm long, appressed-pubescent, at least on the 

 nenfes, above, subvillous beneath, the hairs denser and erect to subappressed on 

 the nerves, ciliate, pinnately nerved from the lower half, the nerves 4-5 on each 

 side, submarginally loop-connected, with cross-connecting, scarcely anastomosing 

 nervules, drying thin, translucent, pellucid-dotted; petiole about 5-10 plus 2 mm 

 long, hispid, vaginate at the base; spikes erect, 2-3 mm thick x 3-6 cm long; 

 peduncle 1.5 cm long, slender, hairy; bracts triangular- or round-peltate, with 

 brown centers and dense yellow fringe; ovary ovoid, glabrous; stigmas rather 

 short, sessile; fruit not matured. 



CHIMBORAZO: canon of the Rio Chanchan, about 5 km north of Huigra, moist forested 

 valleys in the afternoon fog-belt, 1500-1950 m, May 19-28, 1945, E-3310 (TYPE), E-3422. 



This species resembles P. armatum to some extent but differs in the shorter 

 hairs on the young stems, fewer nerves, shorter spikes, longer peduncles, and 

 glabrous ovaries. 



