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



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29. Macrolobium angustifolium (Benth.) Cowan, comb. nov. Figure 10. 

 Vouapa angustifolia Benth. Jour. Bot. & Kew Misc. 2: 239. 1850. 



Vouapa chrysostachya Miq. Hollandsche Maatsch. der Wetensch., Haarlem, Natuur. 



Verhand. (Stirp. Surinam. Select.), ser. 2. 7: 11. 1851. 

 Macrolobium chrysostachyum (Miq.) Benth. in Mart. Fl. Bras. 15(2): 220. 1870. 

 Macrolobium chrysostachyum (Miq.) Benth. var. parviflora Benth. in Mart. Fl. Bras. 



15(2): 220. 1870. 



Macrolobium hymenae folium Pittier, Bol. Soc. Venez. Ci. Nat. 7: 141. 1941. 



Tree 4-30 m. tall, 3-10 dm. in diameter, the branchlets densely pilosulose or 

 less frequently glabrous. Stipules 7-11 mm. long, 0.5-1 mm. wide, very rarely per- 

 sisting through one season, linear or linear-lanceolate. Petioles (4-)8-10(-15) 

 mm. long, canaliculate, glabrous or sparsely pilosulose. Leaflets (6— )1 1(— 18) cm. 

 long, (2-)3.5(~5.5) cm. wide, falcate or subfalcate, usually lanceolate or elliptic- 



FIG. 10. Geographic distribution of M. angustifolium. 



to oblong-lanceolate, the base inequilateral, acute, the apex acuminate or caudate- 

 acuminate with a blunt or acute extremity, infrequently bluntly acute, usually con- 

 spicuously punctate on the lower surface, glabrous or pilose on the apical-lateral 

 surface of the costa at the junction with the upper side of the leaflet base; costa 

 strongly salient on the upper surface, plane to subsalient beneath, the venules ob- 

 scure to prominulous. Inflorescences to 17.5 cm. long, averaging about 5"8 cm., 

 the axis puberulous to f lexuose-pilosulose, the peduncles to 7 mm. long; bracts 

 (3")5(-10) mm. long, (1.5-)3(-6) mm. wide, semipersistent or caducous, oval, or- 

 bicular, ovate, lanceolate or elliptic, acute to acuminate, strigulose within, pi- 

 losulose or puberulous externally; pedicels (l-)3(-4.5) mm. long, puberulous to 

 pilosulose; bracteoles (5-)6(r9) mm. long, (2.5-)3(-5) mm. wide, sparsely to strongly 

 strigulose within, puberulous to pilosulose externally, elliptic, oblong, oval, to 

 ovate, oblanceolate or obovate, apiculate to long-acuminate. Hypanthium 1-2 mm. 

 long, sessile or with a stipe to 0.5 mm. long, glabrous to puberulous. Sepals usu- 

 ally five, free or the adaxial pair more or less united, sometimes totally united 



