leaves which are larger, by having three (instead of five) 
anthers in each staminal bundle, by its much shorter 
pedicels and by its lemon-yellow and basally pink (in- 
stead of greenish white and apically pink) petals. 
The bright yellow latex of Moronobea rupicola is uti- 
lized by the Kabuyari and Taiwano Indians of the Rio 
Kananari for making slow-burning torches, which are the 
source of light at festivals and dances in large communal 
houses. 
CoLomsia: Comisaria del Vaupés, Rio Kananari, Cerro Isibukuri. 
Alt. 250-700 m. ““Tree 35-40 feet tall. Diameter 8 inches. Latex 
yellow. Flowers yellow, base of outer part of petals slightly pink- 
tinged. Half way up the mountain.’’ August 4, 1951, Richard Evans 
Schultes § Isidoro Cabrera 13384 (Tyre in Herb. Gray).—Same local- 
ity. ‘Flowers yellow.’’? October 29, 1951, Schultes & Cabrera 14525. 
Platonia insignis Martius var. formosa R. EF. 
Schultes var. nov. 
Arbor enormis, usque ad 90 ped. alta, trunco usque 
ad 1 m. in diametro, a Platonia insignis petalorum parte 
exposita margine auri usu valdissime revoluta, styli 
brachiis multo longioribus atque sepalis vulgo minoribus 
principaliter differt. 
It might seem that the differences upon which Pla- 
tonia insignis var. formosa are based are trivial. The pe- 
culiar folding back of the exposed parts of the imbricated 
petals, however, is so conspicuous that it lends the flow- 
ers avery distinctive appearance. There is occasionally 
some slight folding back of the petals in Platonia insig- 
nis, but an examination of ample material from Brazil, 
the Guianas and Venezuela and a study of the descrip- 
tion and drawing in Martius’ Flora Brasiliensis convince 
me that usually the petals are not at all revolute and 
that, in those few cases where they are, this condition is 
slight and wholly confined to the very margin. In the 
variety here described, the folding back is, as I have 
[ 18 ] 
