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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[vol. 10 



4. Kotchubaea neblinensis Steyermark, sp. nov. Fig. 73, E-F. 



Arbor dioica 20-metralis, ramulis glabris ; stipulis persistentibus suborbiculari- 

 bus apice rotundatis 4 mm longis glabris marginibus eiliolatis exceptis ; foliis 

 adultis glabris petiolatis, petiolis 7-15 mm longis glabris; laminis subcoriaceis 

 vel coriaceis oblongo-ellipticis apice obtusis vel rotundatis vel obtuse acutis basi 

 acutis 7-14.5 cm longis 3-7 em latis glabris, nervis lateral ibus utroque latere 

 4-7 supra tenuissime impressis subtus leviter prominulis ; floribus masculis in 

 cymis corymbosis irregulariter 4-6-floris dispositis pedicellis 0.8-4 cm longis 

 glabris; calyce musculo tubuloso obconico-turbinato 6-10 mm longo 7 mm lato 

 apice eiliolato aliter extus glabro intus toto dense flavido-canosericeo apice 

 truneato vel subtruncato ; corolla mascula alba vel flavido-alba hypocrateriformi, 

 tubo 35-45 mm longo basi 2.5^ mm diam, superne ampliato fauce 10-11 mm 

 diam, 7-10 mm longa. tubo extus todo eano-puberulenti basi ipsa glabra 1-2 mm 

 excepta. intus fauce dense flavido-villosa 9-10 mm longa pilis adpressis ad 2 mm 

 longis aliter glabra ; lobis descendentibus 8 lineari-lanceolatis apice acutis 

 angustatis 29-31 mm longis 2.5-4 mm latis utrinque cano-pulverulentibus ; 

 staminibus 8 sessilibus antheris lineari-oblongis 7-7.5 mm longis 0.9-1 mm latis 

 apice acumine lanceolato acuminato 1 mm longo ; stylo 3.8 cm longo inferne 2.7 

 cm longo glabro superne 1.2 cm longo piloso ; stigmatibus oblongo-lanceolatis 

 4.5 mm longis glabris ; floribus f emineis non visis ; bacca non visa. 



VENEZUELA. Amazonas: Cerro de la Neblina ; occasional in forest just 

 north of Camp 3; alt. 650-700 m; tree 20 m X 18 cm; flowers white, faintly 

 green flushed, fading to cream; 17 Nov 1957, B. Maguire, J. Wurdack, W. M. 

 Keith, & C. K. Maguire 42084 (holotype NY). 



This species finds it closest relationship with K. palustris Ducke of the upper 

 Eio Negro. It differs from K. palustris in the glabrous outer surface of the 

 staminate calyx-tube, glabrous stipules except for their ciliolate apex, leaf -blades 

 glabrous throughout, longer petioles and pedicels, fewer pairs of lateral nerves, 

 and predominantly obtuse or rounded apex of the leaf-blades. 



5. Kotchubaea duckei Steyermark, sp. nov. 



Arbor dioica sat magna, ramulis glabris vel subglabris apicibus glutinosis ; 

 stipulis persistentibus late ovatis vel suborbiculari-ovatis apice rotundatis vel 

 obtusis basi connatis 5-7 mm longis apice eiliolatis ceterum glabris; foliis 

 petiolati^, petiolis 12-25 mm longis supra concavis longitudine sulcatis glabris 

 vel infra granulari-puberulentibus ; laminis subcoriaceis subtus pallidioribus late 

 ellipticis vel obovato-ellipticis apice obtuse acutis vel subobtusis basin versus 

 cuneatim angustatis 12-22 cm longis 3.5-10.5 cm latis supra nitidis glabris subtus 

 glabris vel glabratis, nervis lateralibus utroque latere 7-13 utrinque leviter 

 impressis, nervulis subtus subobsoletis ; floribus masculis in cymis corymbosis 

 irregulariter 6-8-floris dispositis, pedicellis 18-30 mm longis erectis glabris; 

 calyce masculo tubuloso 13-18 mm longo 6.5-7.5 mm lato extus glabro intus dense 

 sericeo apice eiliolato truneato vel irregulariter repando-denticulato dentibus late 

 deltoideis 0.2-0.8 mm longis*; corolla mascula hypocrateriformi alba demum 

 lutescenti, tubo 35 mm longo 3-4.5 mm lato superne abrupte ampliato fauce 

 7-10 mm longo 10 mm lata, tubo extus breviter cano-sericeo in parte basilari 

 glabra 5-8.5 mm excepta intus glabro, fauce extus dense cano-sericea intus dense 

 sericea, lobis 8 lineari-lanceolatis apice obtuse attenuatis 28-34 mm longis 3.5-5 

 mm latis utrinque cano-tomentellis ; staminibus 8, antheris lineari-oblongis 8.5-9 



