ber 8, 1951, Richard Evans Schultes & Isidoro Cabrera 13960.—Com- 
isaria del Amazonas, Rio Caquetd, La Pedrera and vicinity, Quebrada 
Tonina. ‘‘Large tree. Yukuna=koo-peé; Kuripako = koo-d-see; Kabu- 
yari=mai-pa; Puinave=boo-kwan; Tanimuka = ree-kd-wa-ree-ka.’’ 
October 5, 1952, Schultes & Cabrera 17728. 
Moronobea riparia (Spruce) Planchon & Triana 
var. fimbrillata R. E. Schultes var. nov. 
Arbor usque ad sexaginta pedes alta, riparia, a Moro- 
nobea riparia pedicellis multo crassioribus et longioribus, 
petalis apicem versus conspicue fimbrillatis (non integris), 
albido-viridibus (non albis) atque latice laete flavo (non 
viridi) principaliter differt. 
The type of Moronobea riparia was collected by Spruce 
along the Rio Casiquiare and its affluents in Venezuela, 
not far from the locality of the three Colombian collec- 
tions cited below. 
An examination of a duplicate type of Moronobea rip- 
aria (Spruce 3350) in the Gray Herbarium shows that 
the petals do not have the fimbrillate margin near the 
apex, which is very conspicuous in the Colombian col- 
lections upon which I am basing this new variety. This 
fimbrillate margin, together with the general tendency 
for the petals to be somewhat greenish and the bright 
yellow latex, would seem to indicate that we have at 
hand a geographic variant which is best treated as a 
variety. 
The otherwise excellent drawing of Moronobea riparia 
in Martius’ Flora Brasiliensis 12, pt. 1 (1886) t. 106 errs 
in depicting for this species acute petals. The petals in 
the Gray Herbarium specimen of Spruce 3350 are broad- 
ly rounded, albeit, in aestivation, the imbricate condition 
of the bud gives the superficial impression of acute petals. 
Like that of other species of the genus, the latex of 
Moronobea riparia var. fimbrillata is employed for various 
household uses by the Indians along the Rio Guainia. 
[ 15 ] 
