secundaris I mm. longis, minute albo-strigulosis, rhachi- 
bus secondarts 4.5-9 cm, longis, minute albo-strigulosis : 
foliola sessilia, 56-70-jugata, approximata, anguste ob- 
longa, haud falcata, apice obtusa ad subacuta, basaliter 
excentrico-rotundata, glabra, margine minute parceque 
cillolato, obscure 2-8-nervia infra, supra laevia, pinnarum 
toliolis mediis, 7-12 mm. longis, 1-1.5 mm. latis: in- 
florescentiae axillares in axillis foliorum superiorum et 
terminales, capitatae, pedunculo 18-22 mm. longo, mi- 
nute albo-striguloso, floribus sessilibus, rubris, perianthio 
externe albo-sericeo (corolla densissime sericea), intus 
glabro; calyx cupularis, tubo ca. 3.5 mm. longo, lobis 
0.6-1 mm. longis, ovatis, acutis; corolla infundibulitor- 
mis, tubo ca. 5 mm. longo, lobis ovatis, 8 mm. longis, 
2 mm. latis, acutis: filamenta 5 em. longa, glabra; ova- 
rium densissime sericeum, stylo glabro; fructus 90 mim. 
longus, 12 mim. latus, oblongus, ad basim angustior, 
velutinus. 
The specific epithet, derived from the name of the geo- 
graphic region from which these four collections were 
taken, seems appropriate in light of the apparent re- 
stricted distribution of many species of Calliandra. 
The new species does not seem to have any very close 
relatives; it may be recognized by the large number of 
small, subglabrous leaflets, the few pairs of pinnae, and 
the rather large, sericeous flowers. 
Cotomspra: Comisaria del Vaupés, Rio Kuduyari, Cerro Yapoboda. 
Sabanas sobre piedras areniscas. Altitude about 450 m. October 3-4, 
1951. Richard Evans Schultes & Isidoro Cabrera 14203 (Tyrer in U.S. 
Nat. Herb. 2171380).—Comisaria del Vaupés, Rio Parana Pichuna. 
Altitude about 700 ft. June 1953. Schultes & Cabrera 19915.—Com- 
isaria del Vaupés, Rio Karurti, Mesa de Yambi, Savannah de Goo- 
ran-hoo-da, Altitude 950-1000 ft. April 1953. Schultes & Cabrera 
19152,—Comisaria del Vaupés, Rio Kuduyari, Yapoboda. Quartzite 
savannah near headwaters. Altitude 900-1000 ft. April 1953. Schultes 
& Cabrera 19985. 
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