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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



disco carnoso 4-lobato; stylo 5 mm longo sulcato glabro stigmate subcapitato; 

 capsulis non visis. 



BRITISH GUIANA. On shoulder of Karow-tipu, Upper Mazaruni River 

 basin. Kako River; frequent; mixed-evergreen forest ; alt. 950 m ; tree to 20 m, 

 5 dm base diam, bark smooth, red; leaves dark green above, slightly brittle; 

 corolla red with white tip; slight fragrance: 30 Sep 1960, Stephen S. & Carolyn 

 L. Tillett ir>r>67 (holotype NY, isotype YEN). 



This species differs from all the others of the genus, except C. acreanum, in 

 the puberulent lower leaf surface, the densely pilosulovis anthers and connective, 

 and in the possession of bracts present in the inflorescence, 2-6 mm long and 

 externally tomentulose as well as ciliolate. 



From C. spectabile Steyerm., also of British Guiana, to which it is related, 

 it differs in the corolla puberulent or tomentulose on the outer surface, the 

 puberulent lower leaf surface, the more pubescent bracts of the inflorescence, 

 and the smaller, narrower, more numerous foliar appendages of the calyx. 



Calycophyllum spectabile Steyermark, sp. nov. 



Arbor 10 m lata, ramulis novellis puberulentibus ; stipulis in anthesi non visis; 

 foliis petiolatis, petiolis 1.5-3.5 cm longis plerumque glabris supremis puberu- 

 lentibus ; laminis coriaceis late obovatis vel ovato-ellipticis apice obtusis basi 

 obtusis 15-35 cm longis 11-24 cm latis utrinque glabris, nervis lateralibus utroque 

 latere 14-15 prominentibus ante marginem arcuato-curvatis venulis supra 

 creberrimis fere sublineolato-reticulatis ; inflorescentiis terminalibus speciosis, 

 rhachi ramulisque tomentosis angulatis 15-22 cm longis 20-26 cm latis, bracteis 

 simplieibus triangulari-laneeelatis vel oblaneeolatis acuminatis vel trificlis vel 

 tripartitis 5-12 mm longis 1-2 mm latis glabris marginibus ciliatis exceptis; 

 floribus sessilibus vel breviter pedicellatis ; calycis tubo hypanthioque obconico 

 extus sericeo-stramineo-tomentello, calycis lobis 4, suborbicularibus apice ro- 

 tundatis 1-1.25 mm longis 1.5-2 mm latis extus breviter tomentellis; calycis 

 lacinia foliaeea pallido-luteis (teste Maguire & Fanshawe) in laminam obovatam 

 vel suborbiculari-obovatam supra medium rotundatam basin versus cuneatam 

 3.5-6 cm longam 1.8-4.5 em latam utrinque strigillosam dilatata ; corolla alba 

 vel rosea (teste Maguire & Fanshawe) tubo late campanulato 5 mm longo extus 

 glabrato vel parce puberulenti, lobis 1.75-2 mm longis 1.5-2 mm latis; staminibiis 

 4, filamentis villosis, antheris glabris tantum connectivi parte apieali dorsalique 

 pubescenti ; capsula non visa. 



BRITISH GUIANA. Between Imbaimadai airstrip and Mt. Yamanaik, Upper 

 Mazaruni River ; locally frequent ; alt. 1200 m ; tree 10 m, 20 cm diam ; bract pale 

 yellow; flowers white or pink; 23 Oct 1951, Bassett Maguire & D. B. Fanshawe 

 32219 (holotype NY, isotype YEN) ; Kopinang Savanna, Kopinang Falls, south- 

 ern Pakaraima Mountains; alt. 850 m; 30 Aug 1961, Bassett & Celia Magfuin 

 d- (r. Wilson-Browne 46018 A (paratype NY) ; same locality, 1 Sep 1961, Maguin . 

 Maguire, d- G. Wilson-Browne 46041 A (paratype NY). 



This species is related to C. intonsum Steyerm., from which it may be distin- 

 guished by the externally glabrous instead of tomentulose corolla, glabrous lower 

 surface of leaves, larger, broader, and relatively fewer foliar appendages of the 

 calyx, and the externally more glabrate and longer bracts of the inflorescence. 



