bodies among the hairs. These have been observed pre- 
viously in petals of Vachigalia, although occurring on 
the inner surface of sepals of several species. 
Apparently individual flowers or small clusters of 
flowers are subjected to insect attack. Gall-like forma- 
tions, somewhat rounded and measuring up to 1.5 cm. 
length, result. The pedicel of a gall-bearing flower is ob- 
vious; the receptacle-cup, while tumescent and abnor- 
mally large, maintains much of its symmetry, and the 
sepals and petals are larger, more crassate, and appar- 
ently more pubescent. The stamens and pistil form an 
amorphous mass within. Dissection of the mass reveals 
that it is somewhat coriaceous in texture; pollen grains 
and ovules were not found. These gall-like structures are 
soon deciduous. 
Cotomp1a: Comisarias del Amazonas y Vaupés, Rio Apaporis, Cachi- 
vera de Jirijirimo and vicinity. Altitude about 250 m. “‘Large tree. 
Flowers yellow.’’ September 16, 1951. Richard Evans Schultes & Isi- 
doro Cabrera 14045 (Type in Herb. Mo. Bot. Gard.). 
BURSERACEAE 
Paraprotium amazonicum Cuwatrecasas sp. nov. 
Arbor magna, ramis extremis minute tomentulosis 
brunneis angulosis. Folia alterna composita, in specimine 
paripinnata 8-juga, 90-100 cm. longa, foliolis petiolula- 
tis oppositis. Petioles 80 cm. longus robustus rigidus 
striatus basi incrassato-dilatatus, minute puberulus vel 
glabratus in rhachidem productus. Rhachis 40 em. longa 
internodiis 5—6 cm. longis striata minute puberula. Peti- 
oluli circa 12 mm. longi robusti erecti vel striati minute 
puberuli. Lamina foliolorum oblonga, basi rotundata 
subsymmetrica vel leviter asymmetrica (in foliolis duobus 
terminalibus basi cuneata asymmetrica excepto), apicem 
versus paulo attenuata apice subite cuspidato-caudata, 
margine integerrima, 14-26 cm. longa, 5.5—7 cm. lata, 
[ 156 | 
