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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



4059 from the Upper Demerara River, are provided with few (1-3) pairs of 

 braeteoles. Such plants may represent a minor variety. 



5. Quapoya peruviana (Poeppig & Endlicher) Kuntze, Rev. Gen. 1:61. 1891. 



Bengifa peruviana Poeppig in Poeppig & Endlicher, Nov. Gen. et Sp. 3: 12. pi. 210. 1840. 



The original material and more recently collected materials from Peru, 

 Ecuador, and the headwater region of Amazonian Brazil and Amazonian 

 Colombia, are consistent with respect to a large (6-10 cm long) divaricate 

 inflorescence and general form of leaf. 



Dr Cuatrecasas has recognized as var. Occident alis specimens from the 

 Pacific Coast region (Valle) of Colombia, characterized by him as having 

 somewhat larger flowers, more robust pedicels, and shorter inflorescences than 

 the var. peruviana. Foliar differences indicated by Cuatrecasas do not seem to 

 hold. 



There has now accumulated a series of collections from the Rio Xegro — 

 Alto Rio Orinoco drainages that have the shorter inflorescences but perhaps 

 somewhat smaller flowers than var. occiric ntalis. They do seem to be recognizable 

 by distinctly white scarious margins abruptly set off from the bod}' of the 

 sepals by a definite costulate line. They are here interpreted as a third minor 

 geographic variant. 



Undoubtedly the above specific assemblage is closely related to the Atlantic 

 Coastal Q. bracteolata and may some day have to be associated with it. 



Key to the Varieties of Quapoya peruviana 



1. Inflorescence 6-10 cm long; superior sepals 3(4) mm long; neither petals nor sepals 



vittate; subtending braeteoles somewhat disjunct, 1-2 pairs. 1. var. peruviana. 



1. Inflorescence 3-5 (6) cm long, the subtending braeteoles little disjunct; sepals and 

 petals vittate. 



2. Superior sepals 4.0-4.5 mm long, their margins gradually scarious; inflorescence 



open, the subtending braeteoles often of but 1 or 2 pairs. 2. var. occidentalis. 



2. Superior sepals 2.5-3.5 mm long, abruptly marginally costulate and white-scarious- 

 margined ; inflorescence often more congested, the subtending braeteoles often 2-3 

 pairs. 3. var. guayanensis. 



1. Quapoya peruviana var. peruviana. 



PEEU: Poeppig (type, Herb. Boissier, G). Huanuco: confluence of Rio Huallaga with 

 Rio Cayumba; 16 Oct 1936, Mexia 8289 (NY). 



BRAZIL: Amazonas: Sao Paolo de Olivenca, near Palmares, Rio Solimoes; Krukoff 

 8320, 8517 (WT). 



COLOMBIA: Amazonas: trapecio region between Amazon and Putumayo watersheds; 

 ScMdtes 6762 (NY). 



2. Quapoya peruviana var. occidentalis Cuatrecasas, Anal. Inst. Biol. Mexico 



20:112. 1949. 



COLOMBIA: Valle: Rio Yurumangui, bosque, alt. 5-50 m; gran bejuco; flor bianco; 

 3 Feb 1944, J. Cuatrecasas 15889 (holotype, F; isotype, NY). Buenaventura Bay; 16 Feb 

 1939, KUlip $ Garcia 3352 (NY). Region Choco, Rio Calima ; 23 Mai 1946, Cuatrecasas 21255 

 (NY). 



3. Quapoya peruviana var. guayanensis Maguire, var. nov. 



Inflorescentiis vulgo 3-5 cm longis, paucifloribus ; ramis inflorescentiarum 

 divaricatis; bracteolis floribus subtendentibus saepe 2— 3-jugatis ; sepalis super- 

 ioribus orbicularibus 3.0-4.0 mm longis, in maturitate marginaliter costulatis 

 et abrupte albo-scariosis ; petalis orbieulari-oblongis vel oblongis, 5-6 mm longis, 



