BULLETIN 
The New York Botanical Garden 
Vol. 6. No. 22. 
New Species from Bolivia, Collected by R. S. Williams—I 
By Henry H. Russy, M.D. 
Introductory Note 
Some years ago the Bolivian Company, of which Sir Martin 
Conway was manager, sent an exploring party to eastern Bolivia 
to examine certain mineral and rubber-bearing lands in the prov- 
ince of Caupolican. In the party, which was in charge of Dr. 
John W. Evans, geologist, were Dr. Evans, Mr. John Turle, 
mining engineer, Mr. G. N. Whatney, civil engineer, all from Eng- 
land, and Mr. R. S. Williams, botanist, from the New York 
Botanical Garden. La Paz was reached Aug. 14,1901, by railway 
from Mollendo to Lake Titicaca, thence by steamer across the 
lake to Chililaya, from which town a stage carried the party 45 
miles to the city. After remaining in La Paz for some days, pre- 
paring for the trip, the Andes were crossed via the Sorata-Mapiri 
trail, over passes up to some 15,500 feet altitude, and down the 
eastern slope to Puerto Mapiri on the Mapiri river, with an altitude 
of some 1600 feet. Here everything was transferred from mules 
to rafts of corkwood, and the party floated down the Mapiri and 
Beni rivers to San Buena Ventura, the lowest point reached on 
the trip, at an altitude of some 600 feet only. Leaving the river 
at this place travel was resumed afoot and by mules, northwest- 
ward, mostly through forests, to the town of Tumupasa, at an 
altitude of about 1400 ft., where considerable collecting was done, 
and to Ixiamas, the most northern point of the trip. Thence the 
journey was southwestward to San José and Apolo, the latter 
town at an altitude of about 5000 it., in which region the most 
extensive botanical collections were made. From Apolo one 
excursion was made to San Raphael on the Rio Lanza, that occupied 
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