Venezuela) in the close geological and floristic relation- 
ship or even the identity of the now discontinuous sand- 
stone remnant hills and savannas which, crossing the 
Colombian Amazon drainage-area in an are from south- 
ern Venezuela westward and southwestward, appear to 
be an ancient outlier of the formidable Venezuelan- 
Guianan land-mass. 
Cotomb1A: Comisaria del Vaupés, Rio Negro, San Felipe (opposite 
San Carlos, Venezuela). Caatinga. “‘Low shrub 8 ft. tall. Leaves 
very coriaceous.’” December 12, 1947, Richard Evans Schultes & Fran- 
cisco Lépezs 9842. 
FLACOURTIACEAE 
Mayna longifolia Poeppig & Hndlicher Nov. Gen. 
ac Sp. 8 (1845) 64, t. 271. 
Although Mayna longifolia is not uncommon in Am- 
azonian Peru and Brazil, it does not seem to have been 
reported from eastern Colombia. A variety (var. phas- 
matocarpa) has been described from the upper reaches of 
the Vaupés River (Schultes in Bot. Mus. Leafl. Harvard 
Univ. 12 (1946) 125). 
Cotombra : Comisaria del Amazonas, Trapecio amazénico, Loretoyacu 
River, alt. about 100 m. ‘‘Small tree. Fruit white.”’ September— 
November 1944, Richard Evans Schultes 6381. 
BEGONIACEAE 
Begonia lutea Smith & Schubert in Caldasia 4 (1946) 
Eee 
Begonia lutea is a widespread, though rare, species in 
eastern Colombia, as indicated by the four collections 
which have been made of this species. Schultes & Lépex 
10062 represents the easternmost limit of its known 
range. The type or westernmost collection (Pennell 
1537) was made near Villavicencio in the foothills of the 
Andes. Cuatrecasas 7547, from the Rio Guayabero in 
the Vaupés, and Schultes 5658, from the upper A paporis 
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