their color pattern and assume the uniform brownish- 
red hue of Cunuria seed. That the natives recognize in 
the seed of HI. pauciflora resemblance to those of cunury 
may be of significance. ’”’ 
Another very interesting collection is Allen 3049 from 
the Rio Papuri, an affluent of the Vaupés, which forms 
part of the Colombo- Brazilian boundary. The leaflets are 
somewhat like those of typical Hevea rigidifolia, but the 
seed and capsule valve suggest those of H. pauciflora 
var. coriacea. The seeds, smaller than usual for the 
Hevea pauciflora complex, are very strongly angular, 
and the valves, long in relation to their breadth, are not 
twisted. The leaflets, less coriaceous than in typical 
Hevea rigidifolia, are unusually obovate and very shortly 
cuspidate; they are extremely large. Of this collection 
Baldwin (in Am. Journ. Bot. 84 (1947) 268) writes: ‘%... 
is a puzzling specimen. R. J. Seibert has annotated it as 
a possible hybrid of HZ. pauciflora (or H. confusa) and 
A. rigidifolia... carpels of old fruit, which seem refer- 
able to H. confusa Hemsl. and which could have been 
wrongly associated with the collection.... My inclination 
is to consider the material. ... as HQ. confusa with in- 
fluence from Hi. rigidifolia.”’ 
A third collection of significance in this problem is 
Froes 21249. 'This likewise represents a variant of the 
Hevea paucifiora complex, but not the same variant as 
Baldwin 3669, 38670 and Allen 3049. This extensive col- 
lection has leaflets which suggest, in several minor char- 
acters, those of Hevea rigidifolia, but its flowers indicate 
its true affinities. Upon superficial examination of the 
leaves, L annotated this collection in July 1946 as Hevea 
rigidifolia, but later, detailed examination of the flowers 
disclosed my error. Baldwin (loc. cit. 268) has considered 
this collection to represent Hevea rigidifolia, stating: 
“Froes 21249 shows influence of H. confusa. This col- 
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