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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



llentos; 21-30 Apr 1944, J. Cuatrecasas 17187 (holotype F) ; Rio Cajambre, 

 Silva; alt. 5-80 m : arbusto bejucoso epifita ; hoja craso-coriacea, verde brillante 

 haz, verde amarillente enves; 5-15 May 1944, Cuatrecasas 17537 (paratype P) ; 

 Rio Yurumangui, Veneral; bosques; alt. 5-50 m ; gran bejuco ; hoja craso- 

 coriacea; corola blanca (o azulada en capullo otra dia) ; 28 Jan-10 Feb 1944, 

 Cuatrecasas 15755 (paratype, 3 sheets, F). 



Schradera rotundata is distinguished by the broadly obovate leaves broadly 

 rounded to subtruneate at the summit, prominently developed involucre, and 

 short peduncles. 



Schradera suaveolens (Karst.) Steyermark, comb. nov. 



Uncariopsis suaveolens Karst. Linnaea 30: 153. 1857. 



An examination of a fragment of the type collection of* Uncariopsis suaveolens 

 Karst. from the herbarium at Vienna, preserved in F, indicates that it is a well- 

 marked species which has been neglected up to the present time by later authors. 

 Standley in his Rubiaceae of Venezuela (Field Mus. Bot. 7: 383. 1931) combined 

 the Venezuelan species with Schradera exotica (J. F. Gmel.) Standi. [= S. vahlii 

 Steyermark] of the West Indies, and stated that he had "seen no material of 

 Karsten's species, but from the illustration and description it does not appear 

 to differ from the West Indian plant'' (loc. cit.). Actually, both the plate and 

 description in Karsten's PI. Columb. 181. pi: 90. 1858-61, indicate floral details 

 quite at variance from those found in the West Indian plant. 



The short subrotate corolla with relatively short glabrous tube and villous- 

 barbate throat immediately places this taxon apart from 8. polycephala DC, 

 which it most closely resembles, as well as the various species of the West Indies, 

 which have longer salver-form corollas, longer involucres, naked corolla throat, 

 and differently shaped leaves. An outstanding difference of 8. suaveolens, which 

 separates it from these and most other species of the genus, is the occurrence 

 immediately below the apex of the corolla-lobe of the inner reflexed cucullate 

 appendage. In the other species this appendage is situated several or more 

 millimeters away from the apex of the corolla-lobe. Only in the Colombian 

 S. cuatrecasasii is this appendage at the immediate summit of the corolla-lobe. 

 Schradera suaveolens often has tetramerous flowers, a character which further 

 differentiates it from the 5-8-merous flowers of the other species with which it 

 has been confused. 



The Jocality from which Uncariopsis suaveolens Karst. originated is in the 

 state of Carabobo in the Coastal Range of northern Venezuela. A good match for 

 the Karsten plant is Steyermark 89990 from the adjacent state of Miranda, and 

 also in the Coastal Cordillera. The collection of Tamayo 2212 is almost a topo- 

 type, coming from the same general portion of the Coastal range as that orig- 

 inally collected by Karsten. 



The following known collections of the species indicate it to have a restricted 

 range within a limited section of the Coastal Cordillera of Venezuela: 



Estado Carabobo : in silvis. f rondosis prope Puerto Cabello, in monte, Cumbre 

 de Valencia; alt. 1600 m; Karsten (fragment of holotype, F) ; en selvas pluviales 

 de Borburata; arbol pequeno de 5-8 m; Feb 1942, F. T. Tamayo 2212 (US). 

 Distrito Federal : selvas nubladas de la Fila de Agua Negra ; arbusto ; Feb 1938, 

 Tamayo 460 (VEN). Estado Miranda: selvas pluviales del Guatopo; alt. 400- 

 600 m ; bejuco de hojas coriaceas carnosas ; 15 Nov 1956, A. L. Bernardi 5725 



