Rio Negro southwestward across the easternmost por- 
tion of the Colombian Amazonia to a locality near Iqui- 
tos in eastern Loreto, Peru, and to the upper SolimGes in 
Brazil. The Peruvian specimens which are here referred 
to Cunuria Spruceana are slightly atypical in a number 
of minor characters of the flowers and in having stipules 
which are not readily caducous. In some respects, it 
would seem that the Peruvian specimens are somewhat 
intermediate between typical Cunuria Spruceana and 
C. Spruceana var. bracteosa. Until more collections are 
available from this westernmost station for the genus, 
we feel that it is unwise to interpret these variations as 
representing a distinct taxonomic concept. 
5. Cunuria Spruceana Baillon var. bracteosa 
(Ducke) R. EH. Schultes comb. nov. 
Cunuria bracteosa Ducke in Notizbl. Bot. Gart. Ber- 
lin 11 (1982) 586, in synon.; in Arch. Jard. Bot. Rio 
Janeiro 6 (1988) 57. 
Brazi_: Estado do Amazonas—Rio Solimoes, Sao Paulo de Olivenca. 
“‘Frecuens. Silva non inundabili, saepius locis humidis vel ad rivulos. 
Arbor maxima, flor, albido-viridibus.’’ A. Ducke Herb. Jard. Bot. Rio 
23519, August 20, 1929 “‘florif., fructus maturi tempore pluvioso.”’ 
(Typus). (U.S. Nat. Herb. 1516538, 1517678; Herb. Jard. Bot. 
Rio; Herb. Kew).— Rio Negro super ostium flum. Curicuriary. “‘ Silva 
non inundabili. Arbor magna radicibus tabularibus magnis, flor viridi- 
bus.’’ Nom vulg. Cunury. A. Ducke Herb. Jard. Bot. Rio 24873, De- 
cember 24, 1931. (U.S. Nat. Herb. 1617664; Herb. Jard. Bot. Rio 
24873; Herb. Kew).—Manaos, estrada do Aleixo. ““Silva non inun- 
dabili, prope rivulum. Arbor magna; flores masculi albi, odore ut in 
Hevea.’’ A. Ducke Herb. Jard. Bot. Rio 24874, December 18, 1941. 
(U.S. Nat. Herb. 1617665; Herb. Jard. Bot. Rio 24874; Herb. Kew). 
—Manaos. ‘‘ Matta da t. f. silicoso-humosa, loga humido perta d’um 
riachinho. Arv. gr. com sapupemas altas, latex branca, fl, masc. braca- 
centa com cheiro que lembra Hevea.’’ Nom. vulg. cunuri. A. Ducke 77, 
June 1932. (Yale School Forestry Mus. Ser. 21336; Herb. Field Mus. 
657675).— Rio Negro, Sao Gabriel. ‘Silva non inundabili. Arbor 
magna flor. viridibus.’’ Nom. vulg. cunuri. A. Ducke 146, February 
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