147 



base, the trunk straight with a darkish gray, more or less 

 shaggy hark, the crown flat and high, the branchlets stout, 

 sub quadrangular at the ends, somewhat fistulous, marked with 

 numerous annular rings formed by the scars of fallen leaves, 

 glabrous. Leaves ovate, obovate or elliptic-lanceolate, 

 long Guneate at the base, abruptly contracted in a short acu- 

 men, glabrous, deciduous. Inflorescences axillary or termi- 

 nal, dichotomous, glabrous, many-flowered; floral pedicels 

 %bout 8 mm. long; calyx 5-lobate, glabrous, the lobes divided 

 almost to the base, ovate, obtuse, about 2 mm. long, each 

 bearing on the inside 3 to 6 basal, elongated glands; corolla 

 white, the tube dilated at the base, 8 to 9 mm. long, the 

 lobes ovate-oblong, 15 ram. long, 8 mm, broad, rounded at the 

 apex, i'ollicles smooth, about 8 cm. long and 0.5 cm. in dia- 

 meter, geminate, ovoid-elongate.] 



Description of the wood 



Sapwood usxially narrow, nearly white; heartwood somewhat 

 darker or sometimes reddish brown. y7ood very hard and tough, 

 heavy, strong, very close and straight-grained, taking a 

 very good polish. 



Pores (transverse section) very numerous, small (about 

 .078 mm. diam.), round or often polygonal in outline, open 

 in sapwood, often closed in heartwood and arranged usually 

 in radial rows of a few to 6 or 8 . Vessel-walls ( lo^ngitu- 

 dinal section) with numerous, small, round, bordered pits. 

 Perforations simple. Wood fibers about 1.5 mm. long with 

 relatively thick walla and small cell cavities. Pits excee- 

 dingly small, oblique and slit-like. IVood parenchyma spa- 

 ringly developed, oc curing only in the neighborhood of 

 vessels and pith rays. Hays very numerous, from 1 to 5 cells 

 wide and from 10 to EO times as high.) 



Distribution, common names and uses 



IIo common names are given for this species, which was 

 found only in the Canal 2one and in Darien. The wood, which 

 is heavy and hard, is of little use. 



