diameter at the base, the bark rugose, thin, grayish, the 

 crown globose or elongate. Leaves Goriaceous, glabrous, the 

 petioles 4 to 7 m.a. long, canaliculate, dark brown, the bla- 

 des broadly ovate or obovate, subacute at the base, shortly 

 acate-aGuiaii:iate , light green v/ith the venation ian)ressed 

 above, subglaucous, the costa and veins prominent beneath; 

 primary veins 13 to 15, crowded and spreading. Stipules lan- 

 ceolate, about 4 mm. long, caducous. Hale receptacles glo- 

 bose, single or geminate in the axils of the leaves, provided 

 at the base with 4 or 5 ovate, involucrate bracts; peduncles 

 4 to 5 ran. long, glabrous; interfloral bractlets orbicular, 

 peltate, hairy, ciliate en the margin; perianth divisions 4, 

 ovate or obovate, hairy, ciliate on the margin; stamens 4, 

 the anther cells transverse, dehiscing as in the raonothecous 

 Brosima. i'emale flowers and fruits not known. 



Description of the ;7ood 



Sapwood thick, yellowish or nearly white; heartwood dark 

 brown, tinged with red, >/ood hard, heavy, very strong, tough, 

 cross and very fine-grained, difficult to work, taking a 

 good polish. Annual rings of growth not visible, 



Ppres (transverse section) numerous, small (.1 mm. in 

 diameter), round or radially flattened when it rows, open in 

 the sapwood, closed with white or dark brown tyloses in the 

 heartwoodl , and arranged singly or in short radial rows of 

 from 2 to 6 or 8.<i Vessels walls (longitudinal section) 

 with numerous, small, slightly bordered pits on all sides, 

 except where in contact with pith rays, the pits are large, 

 transversaly elongated and simple. Perforations simple. 

 Wood fibers 1.018 mm. long, with very thick walls, small 

 cell cavities and small simj^le pits, i/ood parenchyma 

 fairly strongly developed and arranged in very narrow, irre- 

 gular, interrupted, "Cangential lines; also grouped ground 

 all vessels. Hays very numerous, narrow, i'roa 1 to 4 cells 

 wide and from 10 to 20 cells high. 



Distribution , local names and uses 



This tree has been found so far only in the Chagres 

 Valley and in Darien. It seems, hov/ever, to be rather common 

 in the monsoon-forests of the Pacific and is known araoi:ig the 



