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



I 



ginibus puberulis, lateraliter glabrum, 2-ovulatum, gynophoro 3 mm. longo, mi- 

 nute puberulo. 



Type Collection: D. B. Fanshawe 752 (F.D. 3488), "Mahdia Ck., Potato R., 

 108 m. Bartica-Potato Road," British Guiana, June 1942 (HOLOTYPE BGF). 

 Known only by the type collection. 



25b. Macrolobium unijugum var. mucronatum Cowan, var. nov. Figure 8. 



Arbor parva, ramulis minutissime puberulis. Petiolus 18-25 mm. longus, levi- 

 ter sulcatus, minutissime puberulus. Petioluli (0-)3 mm. longi. Foliola 20-30 cm. 

 longa, 5.5*9 cm. lata, plus minusve aequilateralia, elliptica, ad basim inaequi- 

 lateralia, acuta, ad apicem acuminata, extremitate obtusa vel acuta, superficie 

 epunctata, supra glabra, infra in costa minutissime puberula; costa impressa su- 

 pra, infra salienti, venulis prominulis supra, infra prominentibus. Inflorescentiae 

 4.5-7 cm. longae, axe minutissime puberulo; bracteis 1.5 mm. longis et latis, tri- 

 angulari-oblongis, ciliolatis, intus glabris, extus minute puberulis; pedicelli 2-3 

 mm. longi; bracteolis 7.5 mm. longis, 4 mm. latis, oblongo-obovatis, valde mucro- 

 natis, intus glabris, extus minute puberulis. Hypanthium 2.5 mm. longum, stipite 



1 mm. longo, glabrum. Sepala quattuor, 6-6.5 mm. longa, 2-3 mm. lata, oblonga, 

 obtusa, glabra vel sparse ciliolata. Petali lamina 6 mm. longa, 5 mm. lata, ova- 

 lis, glabra, unguicilo 5.5 mm. longo, exauriculato. Filamenta 20.5 mm. longa, ba- 

 sim versus sparse villosula, antheris 2.5 mm. longis, 1.5 mm. latis, oblongis. 

 Stigma capitellatum. Stylus 18.5 mm. longus, ad basim sparse puberulus. Ovarium 



2 mm. longum, 1 mm. latum, oblongo-ovale, puberulum, 2-ovulatum, gynophoro 2.5 

 mm. longo, puberulo. 



Type Collection: A. Ducke 35188, "Igarape Yurupary affl. Rio Uaupes," Ama- 

 zonas, Brazil, Sept. 1935 (HOLOTYPE US, isotypes G, P, U). Known only by the 

 type collection. 



25c. Macrolobium unijugum var. unijugum. Figure 8. 



Inga unijuga Poepp. & Endl. Nov. Gen. & Sp. Pi. 3: 79. 1845. 

 Macrolobium limbatum Spruce ex Benth. Trans. Linn. Soc. 25: 307. 1865* 

 Vouapa limbata (Spruce ex Benth.) Taub. Bot. Centralbl. 47: 393. 1891. 

 Vuapa unijuga (Poepp. & Endl.) Kuntze, Rev. Gen. 1: 213. 1891. 



Tree 3-23 m. tall, branchlets very minutely puberulous. Petioles (8-)15-20 

 (-25) mm. long, subsulcate, very minutely puberulous. Leaflets 10.5-30 cm. long, 

 3-11 cm. wide, sessile, punctate on the lower surface, the base acute, the apex 

 bluntly acute or subacuminate; costa and primary veins strongly impressed on the 

 upper surface, the intramarginal vein prominently produced. Inflorescences 1.5- 

 4.5 cm. long, several fasciculate in loose clusters; bracteoles obovate or oblong- 

 obovate, rotund apicaliy or sometimes apiculate. Hypanthium 2-3.5 mm. long. Se~ 

 pals four, 4-7 mm. long, 2-5 mm. wide, oblong or oval, obtuse. Anthers 1.5 mm. 

 long, 1 mm. wide. 



Type Collection: E. Poeppig 2801, ''Brasilia. In sylvis ad Ega," Nov. 1831. 

 (HOLOTYPE W, isotypes P, ^V). 



Additional Specimens: BRAZIL: Amazonas: Manaos, Aug. 1935, Ducke 22 (A, F, IAN, 

 MO, NY, US); Sao Paulo de Olivenca, Nov. 1927, Ducke 20316 (G, U, US); circa Cachoeira 

 do Mindu, Manaos, Sept. 1929, Ducke (HJ.B.R. No.) 23295 (G, RB, U, US); Manaos, Feb. 

 1945, Froes 20497 (IAN); Porto Cucuruhy, Rio Negro, Oct. 1945, Froes 21114 (F, IAN, 

 NY), 21114a (IAN, NY, U); Manaos, Oct. 1929, Killip & Smith 30157 (A, F, NY, US); near 

 Tres Casas, Municip. Humayta, Sept.-Oct. 1934, Krukoff 6243 (A, F, MO, NY, U, US); Rio 

 Uaupes, afl. do Rio Negro, April 1947, Pires 326 (IAN, NY); Tefe, Oct. 1948, Pires 1308 

 (IAN); Rio Vaupes between Ipanore and confluence of Rio Negro, Taracua, Nov. 1947, 

 Schultes & Pires 9032 (US); in caatingas secus fluv. Uaupes, Nov. 1852, Spruce 2668 (type 

 collection of Macrolobium limbatum; HOLOTYPE K, isotypes G, GH, NY, P, W). 



PERU: Loreto: Mishuyacu near Iquitos, Oct.-Nov. 1929, Klug 418 (F, NY, US) and 

 Dec. 1929, Klug 663 (F, NY, US); Balsapuerto, Jan. 1933, Klug 2867 ,(A, F, G, GH, MO, 



