1958] 



THE BOTANY OF THE GUAYANA HIGHLAND PART III 



147 



in bud, elongate enormously during* anthesis and maturation of the flower. The 

 type material of A. macrophylla shows mostly very large leaflets, but these 

 recent collections indicate remarkable variability in leaflet size and shape. The 

 following previously unreported collections represent this species. 



VENEZUELA: Amazonas: along Yapacana cano from laguna to junction with Rio 

 Orinoco, elev. 150 m, Maguire 4' Wurdaek 34586 ; spreading tree, occasional on Laja Catipan 

 near Rio Yatua, 100-140 m elev., Maguire, Wurdaek, 4" Bunting 37553 ; tree at edge of savanna 

 on left bank of Cano Hechimoni 8 km above mouth, Rio Siapa, Casiquiare, elev. 100-130 m, 

 Maguire, Wurdaek, 4" Bunting 37618 ; bushy tree at edge of savanna on left bank of Cano 

 Hechimoni 8 km above mouth, Maguire, Wurdaek, Bunting 37620. 



Bauhinia cupulata Spreng. 



VENEZUELA : Bolivar : frequent shrub 4-6 m, rocky outcrops on Isla Sta. Elena, Rio 

 Orinoco opposite mouth of Rio Pargueni, elev. 100 m, Wurdaek 4~ Monachino 39861. 



This is a rare species, described originally from southeastern Brazil and 

 hitherto unknown so far north ; it is the first report of the plant in Venezuela. 

 It matches the type photograph well and it is surely conspecific with the Gardner 

 collection cited by Bentham, two sheets of which are in the herbarium of The 

 New York Botanical Garden. 



Campsiandra macrocarpa Cowan, sp. nov. 



Arbor 15 m alta, patula, truncis multis, ramulis puberulis; folia puberula, 

 imparipinnata, petiolo 7-9.5 cm longo, leviter marginato, rachibus 15-24 cm 

 longis, canaliculato-marginatis ; foliola 5-6-jugata, petiolulo ca. 4 mm longo, 

 laminis 8-19.5 cm longis, 3.5-6.5 cm latis, oblongo-ellipticis vel ellipticis, apice 

 acuminatis, extremitate obtusiusculo, basi obtusis, leviter inaequilateralibus, 

 utrinque puberulis, pilis erectis, supra costa subimpressa, infra salienti, venis 

 primariis venulisque planis et obscuris supra, infra prominentibus et salientibus ; 

 fructus immaturus 36.5-59 cm longus, 6.5-7.5 cm latus, glaber, nitidus, arcuato- 

 oblongus. 



Type Collection: B. Maguire, J. J. Wurdaok, and G. S. Bunting 36472 (holo- 

 type NY), "spreading multi-trunked tree to 15 m. Fruit green. Frequent at 

 mouth of no Yatua. 100-140 m elevation. Nov 30, 1953." 



While it is not generally good taxonomic practice to describe new taxa on 

 less than rather complete material, it is sometimes justified in a small group 

 where the characteristic differences are well marked. There can be no question 

 of the distinctness of this species from the other two in the genus. Besides the 

 very large fruits of the new species, it may also be recognized by the coriaceous, 

 puberulent, strongly venose leaflets which are distinctly different in shape from 

 those of the other species. 



Eperua venosa Cowan, sp. nov. Figure 17. 



Arbor (•?), ramulis foliisque glabris; stipulae deciduae, glabrae, triangulares, 

 acutae, rigidae, ca. 5 mm longae ; petiolus cylindricus, 33 mm longus, rachibus 

 40 mm longis, cylindricis ; foliola bijugata, petiolulis 8-10 mm longis, transverse 

 corrugulatis, laminis 20-22 cm longis, 8.5-9 cm latis, base obtusis (paribus apica- 

 libus base obliquis), apice acuminatis, valde venosis, costa venis venulisque plus 

 minusve salientibus, margine leviter recurvatis et nervo marginali pergracile 

 praeditis ; inflorescentia 14.5 dm longa, pedunculo 10 dm longo, leviter puberulo, 

 ramulis distantibus, 3-4 cm longis, puberulis, pedicellis ca. 15 mm longis, puber- 

 ulis ; hypanthium cupulare, crassum, 7 mm longum, dense strigulosum, sepalis 



