330 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 4 



The glabrous ovary of the typical variety and var. bicuspidum serve to differ- 

 entiate them from the other taxa of the same rank. Quite a number of characters 

 separate them from each other. The more important of these are the size and na- 

 ture of the stipules, number of leaflet pairs, petiole length and presence or ab- 

 sence of pubescence on the inflorescence. 



41. Macrolobium trinitense Urban, Symb. Ant. 1: 314. 1899. 



Tree to 25 m. tall, 4 dm. in diameter, the branchlets very minutely puberulous 

 but giabrescent. Leaves 2-4-jugate, the petioles 5*18 mm. long, canaliculate, the 

 rachis (1.5-)3-8 cm. long, the petiole and rachis uncinate -puberulous on the upper 

 surface, glabrous beneath. Leaflets 43-85 mm. long, 15-45 mm. wide, elliptic, the 

 base inequilateral, the upper side subcordate, the lower acute, the apex subacu- 

 minate to acuminate, the extremity truncate, entire or slightly retuse; costa plane 

 to subsalient on the upper surface, salient beneath, the venules prominulous. In- 

 florescences 4-11 cm. long, cauliflorous, fasciculate, the axis glabrous, the pe- 

 duncle 5-12 mm. long; pedicels 6-15 mm. long, filiform, glabrous; bracteoles 8-9 

 mm. long, 3.5 mm. wide, oblong-oblanceolate, glabrous. Hypanthium 5.5-6 mm. 

 long, on a stipe about 1.5 mm. long, glabrous. Sepals 5-7.5 mm. long, 2.5*3.5 mm. 

 wide, oblong, elliptic, or obovate, obtuse. Petal subsessile, the blade 10-15 mm. 

 Long, 7.5-9.5 mm. wide, oval to ovate, the claw 0.5-1.5 mm. long, glabrous on the 

 outer surface, villosulose within on the lower portion of the costa. Filaments 12.5- 

 18 mm. long, villosulose in the lower portion, the anthers 3 mm. long, 1.5-2 mm. 

 wide. Stigma capitellate. Style about 10 mm. long, glabrous. Ovary 2.5 mm. long, 

 1.5 mm. wide, oblong, glabrous, 3-4-ovulate, the free portion of the gynophore 1-3 

 mm. long, glabrous. Fruit unknown. 



Type Collection: W. E. Broadway (Trinidad Bot. Gard. Herb. No.) 5216, Tu- 

 cuche, Trinidad, Jan. 1893 (HOLOTYPE presumably at Trinidad Herbarium, iso- 

 type NY). 



FIG. 12. Geographic distribution of most of the species of section Stenosolen. 



