Caatinga.’’ Ricardo de Lemos Frées 21396, Nov. 16, 1945. (U.S. Nat. 
Arb. Herb, 182206.) 
Enough collections of Cunaria crassipes are now avail- 
able to assure us that this species concept is compara- 
tively constant. Apparently the species is a very localized 
endemic of the upper Rio Negro area and the adjacent 
lower Uaupés. This region is known to have high en- 
demism, a fact which is emphasized occasionally, as when 
Allen rediscovered Cunuria crassipes, one of the endem- 
ics which Spruce collected there almost a century ago. 
No other known species of Cunuria has the venation 
of C. crassipes. Its coriaceous, strongly marginate leaves 
are supplied with a relatively strong central nerve, rather 
prominently elevated on the under surface but only 
slightly so above; eight or nine secondaries which are 
extremely slender and hardly elevated; and tertiaries 
which anastomose but which are, in general, parallel to 
the secondaries. In all other species, the tertiaries are set 
at right angles to the secondaries and are not parallel. All 
specimens of Cunuria crassipes which have been available 
for study have the upper and lower surface of the leaf very 
unequally discolored when dry, the upper usually con- 
serving a very characteristic bluish-grey glaucescence. 
The flowers of Cunuria crassipes are still unknown. 
The specimen of F’rées 21396 in the U.S. National Ar- 
boretum Herbarium has the remnant of one flower in a 
poor state of preservation. It is possible to ascertain 
from it, however, that the flower is much larger than in 
Cunuria Spruceana. 
According to the collector’s notes, Baldwin 3673, 3675 
and 3681 have a capsule with a cherry-red epicarp when 
ripe. Cunuria Spruceana, as stated on the label of Bald- 
win 3673, has a green epicarp. 
Baldwin 3698, which is here included under Cunuria 
crassipes, is larger than the typical material. The collec- 
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