Wilhams 2745, 2805, 2808, 2949 (from La Victoria) and 
3169 (from Leticia) are Colombian. 
Similarly, Heisterta eurycarpa Standl., known only 
from the type collection made at La Victoria, near Leti- 
cia, Colombia, has been cited as Peruvian; although this 
concept undoubtedly occurs on the Peruvian as well as 
on the Colombian side of the Amazon River, it is advis- 
able to include it in an enumeration of Colombian plants. 
Cotoms1A: Comisaria del Amazonas. Trapécio amazénico, Loreto- 
yacu River. Alt. about 100 m. ‘‘Bush. Bracts red.’? October 1945, 
Richard Evans Schultes 6832. 
MENISPERMACEAE 
Sciadotenia toxifera Krukoff & Smith in Bull. 
Torr. Bot. Club 66 (1989) 808. 
Sciadotenia towifera has previously been known from 
Amazonian Ecuador where Richard C. Gill collected it 
as an ingredient of the curare of the Canelos Indians of 
the Napo-Pastaza area. This was the first report of the 
genus as an arrow poison plant (Krukoff & Smith loe. 
cit.). 
The Witoto Indians of Amazonian Colombia no 
longer prepare curare, but knowledge of which plants 
entered into their poisons is still extant. Sczadotenia 
toxvifera was indicated as one of the principal ingredients. 
CotomsiaA: Comisaria del Amazonas, Karaparana, El Encanto. 
**Bush in swamps. Fruit with soft brown hairs but with a blue-green 
sheen through indumentum. Height 8 ft. Witoto name: he-de-kd-pe. 
Formerly used to make arrow poisons, together with other plants.’’ 
May 23, 1942, Richard Evans Schultes 3866. 
STERCULIACEAE 
Herrania Camargoana R. E. Schultes sp. nov. 
Arbuscula parva, tenuis gracilisque, vulgo plusminusve 
octo vel decem (sed saepe usque ad viginti septem) pedes 
alta; erecto cum trunco tereti, circiter 4-5 pollices in 
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