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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



ventraliter cum loculis coalito dorsaliter calcari 0.1 mm longo truncato. Stylus 

 4 X 0.5 mm glaber ; stigma punctiforme 0.1 mm diam ; ovarium oblongum apice 

 cum lobulis 0.5 mm altis. Capsula ca. 5-5.5 mm longa ca. 3 mm e hypanthio 

 eminens, valvis apice per 1.9 mm bifidis extus glanduloso-setulosis intus glabris. 



Type. Petals white, anthers orange, occasional on Canon Grande slope east 

 of Cumbre Camp, Cerro de la Neblina, Terr. Amazonas, Venezuela, alt. 1600- 

 1800 m, 22 Nov 1957, Bassett Maguire, John J. Wurdack, & Celia K. Maguire 

 42173 (holotype US 2342609). Paratype. Same locality, alt. 1500-1600 m, 

 Maguire, Wurdack, & Maguire 42537 -F. 



The superior ovary and capsular fruit indicate placement either in the 

 Tibouchineae or Merianieae; unfortunately the dehisced capsules of the type 

 collection retained no seeds. In Cogniaux' key to the Tibouchineae, only Svitramia 

 and Chaetolepis would suggest themselves as allies and both genera differ rad- 

 ically in habit and flower-mery. Among the Merianieae, Behuria and Calyptrella 

 are somewhat suggestive of Neblinanthera, both having several species with 

 6-merous flowers. Behuria differs in the larger acute dorsal connective appendage 

 and large calyx lobes, while Calyptrella has a calyptriform calyx limb and 

 pulverulent (when present) pubescence, but a similar protruding capsule. At 

 present I would favor Calyptrella as the probable nearest generic relative. The 

 simple glandular pubescence of the Neblina genus generally precludes considera- 

 tion of other genera of the Merianieae. In vegetative aspect, Neblinanthera is 

 quite like Leandra maguirei or some of the Clidemia species with bullate leaves; 

 overall, the appearance and stamens would also suggest the bullulate-pubescent 

 species-group of Miconia Sect. Amblyarrhena (species 387-398 of Cogniaux' 

 monograph). 



Centronia neblinae Wurdack, sp. nov. 



C. reticulatae Triana affinis sed hypanthio primum granuloso-furfuraceo mox 

 glabrato. 



Arbor 6-12 m; ramuli foliis inflorescentiisque primum dense ferrugineo- 

 furfuracei mox glabrati. Petioli 3.5-8 cm ; lamina 15-40 X 6-16 cm obovato- 

 oblonga vel oblonga apice plerumque breviter (1 cm) abrupteque hebeti-acuminata 

 basim versus attenuata (basi ipsa rotundata) rigida, trinervata nervis primariis 

 lateralibus ca. 2 mm inframarginalibus nervulis supra subprominenter denseque 

 elevato-reticulatis subtus creberrime densissimeque elevato-reticulatis. Panicula 

 10-15 'cm longa ramis lateralibus 0.5-2 cm longis dichasia singula vel cymas 

 contractas ferentibus; flores 5-meri cum pedicellis robustis 5-8 mm longis. 

 Gemmae maturae 2.3-2.7 cm longae ; calyptra rigida 9-14 mm longa apice per 

 3-5 mm graditer vel abrupte attenuato-apiculata ad anthesim dehiscens; hy- 

 panthium (ad torum) 6.5-8 X 8 mm; calycis tubus supra torum 1.5-2 mm altus. 

 Petala 17-20 X 11-12 mm obovata apice obtusa. Stamina isomorphica; filamenta 

 10 mm longa glabra; antherarum thecae 8-8.5 mm longae curvatae subulatae, 

 connectivo 0.1-0.3 mm prolongato, appendice dorsali 1.5 mm longa acuta. Stylus 

 11.5 X 0.7-0.3 mm; stigma .punctiforme ; ovarium 5-loculare . glabrum apice per 

 1 mm in collum protractum, collo apice brevissime denticulato. 



Type. Petals white, frequent along Canon Grande south-southwest of Cumbre 

 Camp, Cerro de la Neblina, Terr. Amazonas, Venezuela, alt. 1050-1100 m, 25 Dec 

 1957, Bassett Maguire, John J. Wurdack, & Celia K. Maguire 42507 (holotype 

 US 2342618). Paratype. Same locality data, Maguire, Wurdack & Maguire 42195. 



