BRAZIL: Estado do Amazonas, Rio Negro, Tapurucuara. ** Flowers white. 
Small tree. Bark very alkaloid-positive; petiole and leaf negative.” 
July 5- August 12, 1967. R.E. Schultes 24550 (Alpha-Helix Amazon 
Expedition 1967). 
The bark of this tree was indicated as an ingredient of curare 
made in former times by the Tukano Indians. 
Heterostemon mimosoides Desfontaines in Mem. Mus. Paris 
4(1818)248. 
CoLomBIA: Comisaria del Vaupés, Rio Vaupés, Mitu and vicinity. ‘Small 
tree or bush. Flowers purple. Alkaloid-negative.’’ September 27 
- October 20, 1966. R.E. Schultes, R.F. Raffauf et D. Soejarto 
24171. 
The flowers are said formerly to have been pulverized and 
used for flavouring chicha. 
Ox ALIDACEAE 
Oxalis lotoides Humboldt, Bonpland et Kunth, Nov. Gen. et 
Sp. 5(1821)187. 
CoLtomsiaA: Comisaria del Putumayo, Valle de Sibundoy, Sibundoy. Alt. 
2225-2399 m. May 29, 1946. R.E. Schultes et M. Villarreal 7607. 
The Kamsa Indians prepare a tea of this plant which is taken 
as a gargle to relieve chest and throat pains. 
It is perhaps significant that the leaves of another species of 
this genus, the Amazonian Oxalis Martiana Zucc., are pre- 
pared in the form of a gargle to relieve pains of angina (Le- 
Cointe: A Amazonia Brasileira 3(1943)108). 
Leucoanthocyanines have been reported from some species 
of Oxalis (Bate-Smith, E.C.: Journ. Linn. Soc. London 
(Botany) 58(1962)95-173). 
VOCHYSIACEAE 
Qualea acuminata Spruce ex Warming in Martius, FI. Bras. 13, 
pt. 2(1882)40. 
CoLomBia: Comisaria del Vaupés, Rio Vaupés, Mitu and vicinity. **Small 
tree. Flowers white and pink.’’ September 27 - October 20, 1966. 
R.E. Schultes, R.F. Raffauf et D. Soejarto 24177. 
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