Vol. 9, No. 2 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN August 1, 1955 



PLANTS COLLECTED IN ECUADOR BY W. H. CAMP 

 PIPERACEAE 



T. G. YUNCKER 



At the time that Casimir de Candolle monographed the Piperaceae for the de 

 Candolle Prodromus in 1869, 1 little was known of the Ecuadorean flora and 

 scarcely more than two dozen species of the Piperaceae from that country are 

 included in the work. During the nineteenth century, especially its latter half, 

 notable collections were made by Jameson, Couthouy, Hartweg, Spruce, Andre, 

 Eggers, Sodiro, and others. More recently a number of collectors from the United 

 States have been going into areas hitherto less known and have brought to light 

 many new and interesting species. The specimens reported in the present paper 

 were collected by Wendell H. Camp in southeastern Ecuador during the years 

 1944 and 1945. 



After the Prodromus monograph, de Candolle published a number of papers 

 on the family as represented in Ecuador. Among the more important was one 

 published in 1898 2 and based on collections made by Sodiro. Another was pub- 

 lished posthumously in 1920 s on collections made by Sodiro, Jameson, and 

 Eggers. Sodiro, who lived in Ecuador and who was a student of its flora, mono- 

 graphed the family for the country in 1900. 4 Trelease and Yuncker in 1950 5 pre- 

 sented all the known species in a monographic report covering northern South 

 America. The present paper adds a number of novelties to those formerly known 

 and emphasizes the fact that the flora of Ecuador is still imperfectly known. 



The great range in elevation from sea level to more than 6000 m, and the 

 effect on rainfall and temperature of the great Cordilleras produce a diversity of 

 ecological conditions in Ecuador scarcely equaled by any other area of similar 

 size. In the moist valleys and on mountain slopes up to 3000 m occur ideal con- 

 ditions for the growth and development of members of the Piperaceae. Continued 

 exploration, especially in the southern and eastern regions, will undoubtedly 

 bring to light many species as yet unknown. 



PIPER L. 

 A — Ovary and Fruit Stylose 



Piper calceolarium CDC. var. magnifolium (CDC.) Trel. & Yun. Pip. North. 

 S. Am. 15. /. 3. 1950. 



AZUAY: Nudo de Portete, pass between headwaters of the Rios Tarqui (Atlantic) and 

 Giron (Pacific), about 2700 m, March 10, 1945, E-2184; 8 the eastern Cordillera, 1-8 km 

 north of the village of Sevilla de Oro, 2400-2700 m, July 27-Aug 12, 1945, E-4354. E-4399. 



LOJA: Cerro Villanaco, about 7 km west of the city of Loja, 2400-2850 m, Oct 9, 

 1944, E-664. 



l DC. Ptodr. 16(2). 1869. 



'Bull. Herb. Boiss. 6(6). 1898. 



3 Ann. Cons. Jard. Bot. Geneve 21: 251-270. 1920. 



4 R. P. L. Sodiro, Contr. Conoc. Fl. Ecuator. 1900. 



'Pip. North. S. Am. 1950. 



•Where no collector is specified, the name of W. H. Camp should be understood. 



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