320 



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



venulis subprominulis. Inflorescentiae ad 5 cm. longae; pedicello 2.5""4 mm. longo; 

 bracteolis 5.5 mm. longis, 3 mm. latis, oblongis, intus glabris, extus minuto-pu- 

 berulis, obtusis et parce apiculatis. Sepala quinque, duobus adaxilibus partim 

 conjunctis, 3.5*4 mm. longa, 1-1.5 mm. lata, lanceolata vel lineari-lanceolata, ad 

 apicem sparse ciliolata. Petali lamina circa 7mm. diametro, orbicularis, unguicilo 

 4-5 mm. longo, auriculato. Stylus 14-15 mm. longus, basim versus puberulus. 

 Ovarium 2 mm. longum, 1 mm. latum, ubique minuto-puberulum, gynophoro 3.5 mm. 

 longo, minuto-puberulo. 



Type Collection: B. Maguire & D. B. Fansbawe 32210, "margin of Imbaimadai 

 Savanna, Upper Mazaruni River, Pakarima Mts., 550 m. alt., British Guiana, " Oct. 

 1951 (HOLOTYPE NY, isotypes F, G, GH, K, MO, U, US, VEN). 



Additional Specimens: Bartica-Potaro Road, 107 m., Nov. 1943» Fansbawe 1470 (For- 

 estry Dept. 4206) (BGF). 



33b. Macrolobium suaveolens var. rondonianum (Hoehne) Cowan, comb. nov. Fig- 

 ure 11. 



Macrolobium Rondonianum Hoehne, Comm. Linh. Teleg. Ann. 5, Bot. pt. 8: 32. 1919. 



Tree with glabrous branchlets and leaves. Petioles 4-5 mm. long. Lea/lets 

 9.5-13 cm. long, 3.5-5 cm. wide, arcuate, acute to long-acuminate, the extremity 

 usually obtuse, punctate on the lower surface, the venules prominulous above, 

 prominulous to prominent beneath. Inflorescences 2-4.5 cm. long; bracts triangu- 

 lar, acute, glabrous except for the ciliolate margins or very minutely puberulous 

 externally; pedicels 1-2.5 mm. long, glabrous or sparsely and minutely puberu- 

 lous; bracteoles 5.5-6 mm. long, 2.5-3.5 mm. wide, oblong, glabrous within, 

 sparsely and minutely puberulous outside, at least near the apex. Sepals 1.5-3 

 mm. long, 0.5-1.5 mm. wide, more or less ciliolate. Petal blade 3-4.5 mm. long, 

 3.5-4.5 mm. wide, transversely oval, the claw 4-4.5 mm. long, exauriculate. Fila- 

 ments 17-17.5 mm. long, sparsely villose basally. Stigma capitellate to capitate. 

 Style 14.5 mm. long, basally minutely puberulous. Ovary 2 mm. long, 1-1.5 mm. 

 wide, minutely puberulous on all surfaces, the gynophore 2.5 mm. long, minutely 

 puberulous. 



Specimens Examined: BRAZIL: Amazonas: Estrada do Aleixo, Manaos, May 1937, 

 Ducke 489 (A, F, MO, NY, US); same data, Ducke 35195 (U, US); Rio Uaupes, Taraqua, 

 Nov. 1947, Pires 984 (IAN); Rio Uaupes, Panure, Nov. 1947, Pires 1077 (IAN). 



Although no authentic material of Hoehne *s species has been examined, it ap- 

 pears probable from his published plate and description that his species is identi- 

 cal with this variety. Accordingly the epithet is retained in a new combination. 

 The type material is probably at the Museo Goeldi but material of this genus has 

 not been received from that institution. 



33c.*Macrolobium suaveolens var. petiolatum Cowan, var. nov. Figure 11. 



Arbor mediocris 10 m. alta, ramulis foliisque glabris. Petiola 7-13 mm. longa, 

 canaliculata. Foliola 8-14 cm. longa, 2.5-5.5 cm. lata, arcuata ad falcata, ad 

 apicem acuminata vel acuta et extremitate acuta vel obtusa, punctata vel epunc- 

 tata, costa valdissime salienti supra, infra plana ad subsalienti, venulis promi- 

 nulis ad prominentibus. Inflorescentiae 3.5-8 cm. longae, pedunculo 1.5-3 mm. 

 longo; bracteis 1-1.5 mm. longis et latis, triangularibus, glabris, marginibus cili- 

 olatis exceptis; pedicelli 2-4.5 mm. longi, minute puberuli; bracteolis 5-6.5 mm. 

 longis, 3-4 mm. latis, oblongis vel ovalibus, plus minusve pilosis intus, extus 

 puberulis. Sepala adaxilia 1.5*2 mm. longa, 1 mm. lata, triangularia, cetera 2.5- 

 3.5 mm. longa, 1-2 mm. lata, lanceolata ad oblonga, acuta vel acuminata, plus 

 minusve ciliolata vel glabra. Petali lamina 3.5*5.5 mm. longa, 4-5.5 mni. lata, 

 orbicularis vel transverse ovalis, unguicilo 4-6 mm. longo. Filamenta 15.5-18 mm. 

 longa, villosa basim versus. Stigma capitellatum ad peltatum. Stylus 10-16 mm. 



