152 



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



A — Ovary and Fruit not Stylo se 



B — Leaves not Peltate 

 C — Leaves Palmately Nerved 



Piper medium Jacq. var. ceanothifolium (H.B.K) Trel. & Yun. Pip. North. S. Am. 

 69. 1950. 



CHIMBORAZO: canon of the Rio Chanchan, from Naranjapata to below Huigra, 600- 

 900 m, June 19, 1945, E-3871. 



Piper reticulatum L. Sp. PI. 29. 1753. 



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



Piper marginatum Jacq. var. anisatum (H.B.K.)C.DC. in Urb. Symb. Ant. 3: 172. 

 1902. 



CHIMBORAZO: canon of the Rio Chanchan, from Naranjapata to below Huigra, 600- 

 900 m, June 19, 1945, E-3880. 



GUAYAS: coastal plain, in the vicinity of Naranjito, about 36 m, June 6-7, 1945, 

 E-3547, E-3604. 



C — Leaves more or less P innately Nerved 

 D — Principal Branches of the Midrib arising from Below 

 the Upper Third of the Blade 



Piper lancilimbum Yuncker, sp. nov. 



Frutex habitu arborescente glaber; foliis lanceolatis, apice sensim dissite 

 falcatim longe acuminatis, basi subaequilateraliter acutis, a tertio vel quarto 

 infero pinnatim venosis; petiolo ad laminam vaginato alato; ovaris congestis 

 lateral iter complanatis. 



Tree-like glabrous shrub, 1.5 m tall, the upper internodes mostly 3-6 cm long, 

 drying longitudinally striate; leaves lanceolate, 3.5-6 cm wide x 18-23 cm long, 

 gradually somewhat falcately long-acuminate, the base subequilaterally acute, 

 pinnately nerved from the lowermost 3-4 cm, the nerves about 2 on each side, 

 salient beneath, continuing to the apex, the inner pair strongly cross-connected 

 with the midrib upward, finely venulose by transmitted light, drying chartaceous, 

 translucent; petiole about 2 cm long, vaginate-winged to the blade; spikes as yet 

 young, 2 mm thick x 4 cm long; peduncle about 1 cm long, slender; bracts tri- 

 angular, subpeltate, marginally fringed; ovaries closely compacted, laterally 

 flattened; stigmas slender; fruit not developed. 



SANTIAGO-ZAMORA: low hills west of Ri'o Upano, along Rio Chupiangas, 750-960 

 m, Nov 20-22, 1944, Prieto ChuP-8 (TYPE). 



The lanceolate, glabrous leaves, low nervation, and small spikes are dis- 

 tinctive features of this species. 



Piper diffundum Yuncker, sp. nov. 



Frutex parvus subprostratus; foliis suboblique lanceolato-ellipticis, apice 

 attenuatis longe-acuminatis, basi subaequilateraliter rotundatis cordulatis; supra 

 dissite villosis glabrescentibus, subtus ad venas haud conferte villosis, a quarto 

 infero pinnatim venosis; drupa globosa, griseo-porriginosa; stigmatibus sessilibus. 



Small, low, sprawling shrub; stems slender, nodose; internodes mostly 4-6 

 cm long, glabrous, rather glossy; leaves subobliquely lance-elliptic, the apex 

 attenuately long- acuminate, the base subequilaterally rounded, cordulate, one 

 side about 2 mm shorter at the petiole, 2.5-4.5 cm wide x 10-14 cm long, sparsely 

 villous above, glabrescent, loosely villous along the nerves beneath, not ciliate, 

 pinnately nerved with 2-4 nerves from the lower one-fourth, or occasionally one 

 somewhat higher, the midrib with shorter subordinate branches upward, finely 



