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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



ellipticis vel ovato-ellipticis apice abrupte acuminatis acumirie 4-9 mm longo basi 

 acutis 4.5-6.5 cm longis 2-3 cm latis costa media subtus paullo subprominula, 

 nervis lateralibus utroque latere 3-4 supra obscuris vel obsoletis subtus nullis, 

 nervulis nullis ; floribus terminalibus solitariis pedicellatis, pedicellis 4-5 mm 

 longis ; hypanthio turbinato-oblongo 7 mm longo 3.5 mm lato ; calyce in 6 lacinias 

 erectas lineari-lanceolatas acutas vel acuminatas 18 mm longas 3-3.5 mm latas 

 diviso ; corolla luteo-viridi late infundibuliformi, tubo supra basin 2 cm grad- 

 uatim ampliato 6 cm longo basi 5 mm lato fauce 35 mm lata intus glauca, lobis 

 6 depresso-suborbicularibus rotundatis 10 mm longis 15 mm latis; staminibus 6, 

 antheris inclusis prope apicem tubi corollae infra basin loborum corollae 15 mm 

 insertis, lineari-oblongis utrinque rotundatis 7.5 mm longis 2 mm latis subsessili- 

 bus; filamentis 1.5 mm longis; stylo glabro 4.2 cm longo; stigmatibus 2 obovatis 

 acutiusculis 2 mm longis ; disco 1 mm alto ; capsula non visa. 



VENEZUELA. Edo. Bolivar : vicinity of camp 125 at km 125 between Luepa 

 and Cerro Venamo, vicinity of Cerro Uei ; forest ; alt. 1100 m; epiphytic liana; 

 leaves coriaceous ; calyx-tube dark green, lobes paler green with lavender ; corolla- 

 tube and lobes yellow-green, glaucous within ; anther lavender-brown ; 20 Apr 

 1960, J. A. Steyermark & S. Nilsson 392 (holotype VEN, isotype NY). 



This is the first of the Hillia group of species with infundibuliform green 

 corollas to be found in Venezuela. It is thus far known from the sandstone 

 escarpment lying just west of Cerro Venamo near the Venezuela-British Guiana 

 frontier. 



It is related to H. goudotii Standi, of Colombia, H. ulei Krause of Peru, and 

 H. viridiflora Kuhlmann & Silveira and H. saldanhaei Schumann of Brazil. From 

 H. goudotii it differs in the solitary instead of ternate flowers, longer corolla-tube 

 much broader above the middle, longer corolla-lobes, shorter calyx-lobes, and 

 obsolescent lateral nerves of the smaller leaf-blades. 



From H. viridiflora it is distinguished by the shorter pedicel of the flower, 

 the broader calyx-lobes, longer corolla which is much broader at the throat, larger 

 corolla-lobes, longer anthers, longer style, non-flabelliform nerved leaves, and 

 acute to acuminate calyx-lobes. From H. saldanhaei it may be distinguished by 

 the solitary flowers, 6 instead of 5 corolla-lobes, bilobed instead of capitate stigma, 

 and acuminate instead of rounded apex of the leaf -blades. From H. ulei it differs 

 in the larger corolla and calyx-lobes and obsolescent-, instead of palmately-nerved 

 leaf-blades. 



Kotchubaea Fisch. ex DC. Prod. 4: 373. 1830. 



The genus has been previously known from Amazonian Brazil and Peru, and 

 from French and possibly British Guiana. During a study of the genus, two new 

 species collected in the Venezuelan Guayana, one from the base of the slopes of 

 Cerro de la Neblina, the other from the base of Chimanta Massif, form the basis 

 for the first records of the genus in Venezuela, while two additional species, here 

 described as new, one from Peru, the other from Brazil, have been encountered 

 in the material examined in F, NY and US. I am grateful to the curators of these 

 institutions for the courtesy of studying this material. 



Kotchubaea has a distribution following the Amazon, Rio Solimoes, and Rio 

 Negro in Brazil, Amazonian Peru along the Rio Amazonas in the Dept. Loreto, 

 thence ascending between 1200-1600 m in Peru in the drainage of the Rio Muyo 

 (tributary of the Rio Huallago) of the Dept. San Martin, extending northward 

 in Venezuela following a tributary of the Rio Negro, to Cerro de la Neblina and 



