1963] 



BOTANY OF THE GUAYANA HIGHLANDS PART V 



209 



floris subglobosis 15 mm altis 30 mm latis ; pedunculo 3.5-6 cm longo basi 3-3.5 

 mm lato apice 4-5 mm lato glabro ; involucre- rotundato 5-6 mm longo ; calyce 

 hypanthioque oblongo-urceolatis 10-11 mm longis 6 mm latis; calycis lobis 4 

 suborbicularibus rotundatis 1.5 mm altis 2-2.5 mm latis; corollae tubo carnoso 

 cylindrico-tubuloso viridi-albo 7-10 mm longo basi 4—5 mm lato glabro, lobis 

 4-5 albis oblongo-lanceolatis subobtusis 8-10 mm longis 3.5-4.5 mm latis ; 

 staminibus 4-5 inclusis supra medium tubi corollae insertis ; antheris sub- 

 sessilibus lineari-oblongis 4 mm longis 1 mm latis 6 mm supra basin tubi 

 corollae adnatis; stylo viridi tenui 8.5 mm longo glabro ; stigmatibus 2 lineari- 

 lanceolatis 4.5-5 mm longis. 



VENEZUELA. Aragua : Parque Nacioual "Henri Pittier"; trail above 

 Pittier National Monument on Pico Paraiso to summit; alt. 1250-1600 m; 

 epiphytic woody vine on tree at summit ; leaves coriaceous, dark green above, 

 pale below; 4 Sep 1960, J. A. Stcyermark & G. Agostini 17 (holotype YEN) ; 

 en sitios descubiertos, Rancho Grande; alt. 1380 m; arbol pequerio arraigado 

 sobre otro; flores blancas; 25 Sep 1951, T. Garcia 150 (paratype YEN). 



From the newly described S. yutajensis Steyerm., this species differs in the 

 corolla-tube glabrous within, the sessile anthers, two instead of three stigmas, 

 and often tetramerous instead of pentamerous flowers. 



Schradera hilliaefolia Steyermark, sp. nov. 



Suffrutex volubilis ; stipulis terminalibus aliter caducis obovato-oblongis apice 

 rotundatis 19 mm longis 7 mm latis 8 mm connatis ; foliis petiolatis, petiolis 

 10-13 mm longis glabris ; laminis coriaceis elliptieo-ovatis subiter acutis vel 

 subacuminatis, basi plerumque acutis vel subacutis 6.5-8 cm longis 3.5—4.5 cm 

 Jatis utrinque glabris, subtus costa media paullo prominenti, nervis lateralibus 

 utroque latere 7-8 evanescentibus tenuibusque vel fere obsoletis ab margine 3-4 

 mm anastomosin facientibus; capitulis ca. 7-floris depresso-hemisphaericis 25 mm 

 altis 35 mm latis; pedunculo solitario 4 cm longo 2.5-3 mm lato glabro; involucro 

 12-16 mm alto apice irregulariter lobato, lobis 4-5 late ovato-suborbicularibus 

 apice rotundatis 5-10 longis 8-11 mm latis; calyce hypanthioque 10-15 mm 

 longis apice 9-10 mm latis glabris; calyce irregulariter lobato, lobis 2-4 late 

 ovatis vel ovato-suborbicularibus apice rotundatis 2.5-5.5 cm longis 4-6 mm latis ; 

 corolla alba (teste Wurdack & Adderley) 25-26 mm longa, subcylindrico- 

 infundibuliformi. tubo 16 mm longo, in parte cylindrica 11 mm longo, basi 

 4-5 mm lato supra in parte ampliata 9 mm lato, extus glabro intus supra basin 

 ad 6 mm glabro aliter uniformiter creberrimeque puberulentibus pilis 0.3-0.5 

 mm longis instruct is, lobis 5 late lanceolatis apice subacutis 10 mm longis 3-5 mm 

 latis ab apicem 3-4 mm cum denticulo rotundato 0.5 mm longo instructo ; 

 staminibus 5 inclusis supra medium insertis ; antheris linearibus 5-5.5 mm 

 longis; filamentis 1.5 mm longis glabris; stylo 6.5 mm longo glabro; stigmatibus 



5 mm longis. 



VENEZUELA. Amazonas : forest edge south and east of Maroa, Rio Guainia ; 

 alt. 130 m; vine climbing to 2 m high; corolla white; 4 Jul 1959, J. Wurdack 



6 L. 8. Adderley 43316 (holotype NY). 



This species is characterized by the combination of the large subinfundibuli- 

 form corolla, densely puberulous within the tube, the blunt short protuberance 

 on the inner part of the corolla-lobe, glabrous lobate involucre and calyx, solitary 

 peduncle, and weakly or scarcely nerved leaf -blades. 



