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



PLANTS COLLECTED IN ECUADOR BYW.H. CAMP 

 GRAMINEAE 



Ernest R. Sohns and Jason R. Swallen 



The collection of Ecuadorian plants made by Dr. W. H. Camp in 1944-45, 

 principally in the provinces of Pichincha, Leon, Chimborazo, Canar, and Azuay, 

 included 153 specimens of grasses representing 55 genera and 106 species. Of 

 these, ten are new to Ecuador, and three new to science. 



The specimens cited are deposited in the U. S. National Herbarium and in the 

 Herbarium of the New York Botanical Garden (except for unicates, which are 

 indicated as "NY only"). 



Dr. F. A. McClure identified the Bambuseae. 



All collection-numbers are Camp's unless ascribed to another. 



Arundinaria patula Pilger, Bot. Jahrb. 25: 719. 1898. 



AZUAY: Nudo de Portete; pass between headwaters of the Rios Tarqui (At- 

 lantic) and Giron (Pacific), ca. 9000 ft, E-2177 . "Zadilla." In combination with 

 the outer part of the "cana" (Arundo), used in manufacture of baskets, etc. 



Arthrostylidium harmonic um Parodi, Physis 19: 479. /. l> 1944. 



SANTIAGO-ZAMORA ("Oriente"): Eastern slope of the Cordillera, valley of 

 the Rios Negro and Chupianza (on the trail from Sevilla de Oro to Mendez), Tambo 

 Consuelo to Tambo Cerro Negro, 8000-9600 ft, E-1613. 



New to Ecuador. Described from Pintobambo, Cuzco, Peru (Vargas 3260), 



Arthrostylidium racemiflorum Steud. Syn. PI. Glum. 1: 336. 1854. 



Junction of GUAYAS, CANAR, CHIMBORAZO, and BOLIVAR: Foothills of 

 the western Cordillera near the village of Bucay, 1000-1250 ft, E-3814. Thin- 

 stemmed, vine-like plants; looping 20-25 m in secondary jungle (i.e. branches 

 scrambling in one tree, then falling out and downward, touching another tree and 

 scrambling upward again). Apparently all in flower at the same time. 



This is the first record of the species for Ecuador. Mexico to Panama; Vene- 

 zuela, British Guiana, Colombia, and Peru. 



Chusquea scandens Kunth, Syn. PI. Aequin. 1: 254. 1822. 



AZ U A Y - * ' OR IEN T E " border: Paramo del Castillo and surrounding forested 

 areas (crest of the eastern cordillera on the trail between Sevilla de Oro and 

 Mendez), 9000-11,000 ft, E-707. AZUAY: Eastern cordillera, 1-8 km north of the 

 village of Sevilla de Oro, 8000-9000 ft. Large mounds on banks, canes to 7 m 

 long. Stems solid. Leaves deep green above, very pale below. Large areas in 

 flower, or past and plants dead. Quichua name: "SurU. M It is said by the local 

 people — and Prieto verified this statement — that the plant grows for about a 

 period of 7 years, flowers, and then dies. If, however, the plant is cut near the 

 ground just before its flowering period, the plant will sprout freely but the sprouts 

 will not die on schedule. It is quite obvious that the flowering cycle is more or 

 less regional, for large areas near Sevilla de Oro were in flower or had just 

 passed, leaving large openings in the forest. Yet, at the same time, some few 

 plants seemed to be coming into their full period of vegetative growth. Prieto 

 says that the name "Suru" is applied only to the solid-stemmed plants and that 

 two distinct species are recognized: This (which is the high elevation one), and 



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