green (the bark).’’ December 27, 1947, Richard Evans Schultes & Fran- 
cisco Lopez 9524.—Same locality, date and collectors, 9531. 
COMBRETACEAE 
Ramatuella argentea Humboldt, Bonpland & 
Kunth Nov. Gen. & Sp. 7 (1825) 258, t. 656. 
The type of Ramatuella argentea was collected by 
Humboldt on the upper Orinoco. Spruce re-collected it 
at the mouth of the Rio Guainia (Spruce 3498) in 1854. 
Schultes & Lopez 9392 is an exact topotype. This tree is 
not common in the Rio Negro basin. 
CotomsiA: Comisaria del Vaupés, Rio Negro, Cafio Ducuruapo 
(Igarapé Rana) at confluence of Guainia and Casiquiare. “*Medium- 
sized tree along river’s edge. Leaves silvery.’’ December 17, 1947, 
Richard Evans Schultes & Francisco Lopez 9392. 
Ramatuella virens Spruce ex HEichler in Martius 
Fl. Bras. 14, pt. 2 (1867) 100. 
Ramatuella virens was described by Spruce on the 
basis of his collection 3758 from the junction of the Rio 
Guainia and the Casiquiare. Schultes & Lopez 9396 is an 
exact topotype of this species and would appear to rep- 
resent the second collection. The leaves of Schultes & 
Lopez 9395 are somewhat narrower than in the type 
specimen. 
Cotompra : Comisaria del Vaupés, Rio Negro, Cafio Ducuruapo (Iga- 
rapé Rana) at confluence of Guainia and Casiquiare. **Medium-sized 
tree.’’ December 17, 1947, Richard Evans Schultes & Francisco Lopez 
9395, 
ARALIACEAE 
Didymopanax Morototoni (4uwbl.) Decaisne & 
Planchon Rev. Hort. LV, 8 (1854) 109. 
A widespread (but in Colombia often very localized) 
species, Didymopanax Morototoni is a characteristic com- 
ponent of the low forest associated with the savannahs 
or caatingas which, in Amazonian Colombia, occur dis- 
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