94 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 2 



To all, those directly mentioned and to many more unspecified contributors, we of- 

 fer sincere and grateful acknowledgment. 



The prosecution of these explorations would not have been possible but for 

 the facility lent by the many officials of the Government of Venezuela and the 

 United States Department of State. Particular appreciation should be expressed to 

 their Excellencies, the Ministers of Agriculture and Forestry, and of Information, 

 to their Excellencies, Coroneles Paoli and Calcano, Governors of the Territorio 

 Amazonas, to Dr. Tobias Lasser, Chief of the Botanical Service and Director of 

 the Venezuelan National Herbarium, to Dr. A. Davila-Uelgado, formerly Vene- 

 zuelan Consul-General in New York, now Minister to Belgium, and to Dr. James 

 H. Kempton, Agricultural Attache to the American Embassy in Caracas. 



Mr. H. R. Kunhardt, chairman of the New York Botanical Garden Exploration 

 Committee, retired president of the Venezuelan Petroleum Company, organized 

 and sponsored the Kunhardt Expeditions to Cerros Sipapo, Duida, and Marahuaca. 

 A major part of the following report derives from the collections of the Kunhardt 

 Expeditions. 



Dr. William H. Phelps, who sponsored the Phelps Auyan-tepui" Expedition and 

 Mr. William H. Phelps, Jr., both eminent ornithologists of Venezuela, continue 

 to assist in the further program of exploration. Mrs. Phelps, Collaborator in Vene- 

 zuelan Botany at the New York Botanical Garden, together with Mr. Charles B. 

 Hitchcock, Secretary of the American Geographical Society, contributed in numer- 

 ous ways to the botanical survey of Guayana. All have shared their rich experi- 

 ences in exploration technique, supplied trained assistants, conducted inde- 

 pendent and important plant field work, and have been ever generous hosts in 

 Caracas and on their own effectively operated expeditions. 



In Ciudad Bolivar, Puerto Ayacucho, and San Fernando, numerous officials 

 and friends have eased and simplified final organization at these interior river 

 staging ports. Particularly in San Fernando Mr. William Northrup and Mr. Robert 

 Shaylor have assisted in generous hospitality and use of boats and outboard 

 motors. I shall ever be grateful to Mrs. Northrup who expertly nursed my son back 

 to health after a severe attack of malaria and dysentery. 



Through officials of the Sinclair Oil and Refining Company, chiefly Mr. H. R. 

 Kunhardt, Mr. E.T. Lincoln, Miss Julia Baumann, Mr. L. J. Maurovich, Mr. Adolph 

 Michaelson, and Mr. George McKnight, ship passage to Venezuela has been pro- 



FIG. 1. Map showing the approximate location and distribution of sandstone mountains 

 or plateaus that have been the subject of past exploration, or are the object of future ex- 

 plorations anticipated by The New York Botanical Garden. 



Surinam 



1. Tafelberg 

 British Guiana 



2. Kaieteur Plateau 

 Venezuela, Estado 



Bolivar 



3. Mt. Roraima 



*Ilu-tepui 



4. Auyan-tepui 



5. Uaipan-tepui 



6. Ptari-tepui 



7. Chimanta-tepui ( Acopan- 



tepm) 



8. Cerro Guaiquinima 



tCerro Jaua 

 Venezuela, Territorio 

 Amazonas 

 9. Cerro Yavi 



10. Cerro Yutaje 



11. Cerro Guanay 



12. Cerro Camani 



13. Cerro Sipapo (Paraque) 



14. Cerro Moriche 



15. Cerro Paru 



16. Cerro Yapacana 



17. Cerro Huachamacari 



18. Cerro Duida 



19. Cerro Marahuaca 

 Colombia, Comisaria Vaupes 



20. Cerro Campana 



21. Cerro Chiribiquete 

 Colombia, Intendencia Meta 



22. Serrania de la Macarena 



*Ilu-tepui. Not designated on map, but lying 40 kilometers northwest of Mt. Roraima. 

 Visited by the Phelps-New York Botanical Garden Expedition of 1952. 



tCerro Jaua. Not designated on map, but lying approximately 150 kilometers southwest 

 of Cerro Guaiquinima. 



