crassissimis, elongato-ovatis, 7 mm. longis, 8 mm. latis, 
omnino dense et minute albo-tomentellis. Discus hypo- 
gynus, cupuliformis, glanduloso-lobatus, lobis longe tri- 
angulari-subulatis, 0.8 mm. ad 1 mm. longis, flavis. 
Ovarium ovoideum, in circuitu aliquid trigonum, 1.2- 
1.8 mm. in diametro, glabrum; stylus subsessilis, niger, 
carnosus, tripartitus cum divisionibus bifidis, reflexis, 1.2 
mm. longis, supra glabris, subtus dense albo-tomentellis. 
Flores staminiferi multo minores, 1.8 mm. in diametro, 
semper ad florem pistillatum stricte adpressi et itaque 
valde deformati; calycis laciniae illis florum_pistillato- 
rum similes sed minores. Discus nullus. Stamina sex ad 
novem, valde minuta, usque ad 0.8 ad 1 mm. longa vel 
saepe breviora, valde deflexa, filamentis liberis inaequali- 
bus et antheris aliquid pyramidalibus. Fructus ellipsoid- 
eus, atroviridis, apice rotundatus, leviter trisuleatus, vivo 
33 mm. X28 mm., siccitate 28 mm. X24 mm., epicarpio 
glabro, 2-8 mm. crasso; valvis partientibus non contor- 
tis; pedunculo probabiliter robustiore. Semina adhuc 
ignota sed probabiliter pro genere parva. 
Brazit: Estado do Amazonas, Rio Uaupés, at base of Serra Tukano 
(on right bank below mouth of Rio Tikié). **Small tree, columnar and 
not buttressed, 45 feet tall, 7-10 inches in diameter. Leaves heavily 
leathery, marginate, folded at 120° angle along midrib. Bark grey or 
brownish red above, hard and brittle, thin, checked; internally red. 
Flowers white, odorless. Latex thick, white, sticky, not coagulating 
easily. In caatinga-forest.’’ February 8, 1948, Richard Evans Schultes 
& Francisco Lépez 9725 (Tyre in Herb. Gray ).—Same locality. “‘Small 
tree in caatinga-forest. Columnar, not buttressed, 50 ft. tall, diameter 
8 inches. Bark checked, grey or reddish brown above, hard, thin, 
peeling from cambium freely ; red internally. Leaves coriaceous, mar- 
ginate, folded along midrib forming an angle of 120°. Latex thick, 
white, sticky, not coagulating easily, relatively abundant. Growing 
very abundantly together with Hevea nitida and H. pauciflora. Wood 
white, relatively hard.’’ November 7, 1947, Richard Evans Schultes 
& Joao Murca Pires 8999.—Same locality and date. ‘‘Columnar tree 
65 ft. tall, diameter 10-12 inches, not buttressed. Latex fairly abun- 
dant, white, sticky, not coagulating easily. Bark smooth, reddish 
brown outside, red inside, thin. Leaves coriaceous, marginate, folded 
{ 205 | 
