107 



fimbrieate on tlie riargin; ovary 4-celled. Pyx^ subgloboae, 

 woody, grayish "brown and rough v/ithoiit, 15 to 16 era. high, 

 the v/alls E to 2.5 era. thick; basal rart obccnical, 5.5 ca. 

 high; calycary zone more or less ccntinuous and even; inter- 

 zonal band 7 to 7,5 cia. high, 15 cm. in diameter; operculum 

 3 cm. thick and 11.5 cm. in diameter; seeds 6,5 to 7 cm. 

 long, 2.5 cm. broad, about 10 in each pyiiiA'.l 



Descri^jtion of the wood 



Sapwood thick and yellov/ish white, heartv/ood varying 

 from light yellowish to reddish brown, ,/ood moderately hard, 

 heavy, strong-, tough, cross and more or less coarse-grained 

 taking a fairly good polish. It si^lits and outs with diffi- . 

 culty. Annual rings of growth are not clearly defined even I 

 under the compound microscope. ' 



/Pores It-ransverse selex^tion)" not very numerous, rather 

 large (about ,15 mm. in diameter), round or more often ellip- 

 tical in outline, open and sirrai:iged singly or in pairs. 

 Vessel vvalls -floagitudiiial seatic-n) with numerous very small 

 round bordered pits. The ends of the vessel segments are 

 partly absorbed. ,7ood fibers about 2 mm. long v;ith father 

 thick cell walls and small cell cavities. Pits oblique and 

 slit like. V/ood-parenchyma very highly developed, cccuring 

 in regular tangential lines or bands with alternate bands of 

 wood fibers of e.^ual width. All pores imbedded within the 

 bands of soft tissue. Pith rays numerous and rather large, 

 easily visible on radially cut boards. The rays are from 4 

 to 5 cells wide and from 6 to 10 times as high.) 



Distributio n , common names and uses 



IZnown from Southern Darien (Panama) only, thi.- stately 

 tree will probably be found in the neighooring Colombian Chocd 

 It is common in the alluvial plains along the Tuyra -viver, 

 especially in the vecinity of Pinogana and Yavisa. The wood, 

 which is hard, and of a fine reddish brovai color is not used 

 extensively. The pot-like fruit, from which the names olla 

 de mono , and olleto (the latter designating the tree) have 

 been derived, contains about 10 large nuts, equalling, if 

 not superior to, the best varieties of irazil nuts, ,/hen 

 fresh, they act as a strong laxative, for which reason they 



