1957] 



BOTANY OF THE PHELPS' VENEZUELAN GUAYANA EXPEDITIONS— -II 



483 



GUTTIFERAE 



Clusia cardonae Maguire sp. nov. sect. Criuva Benth. & Kook., subsect. Eucriuva 

 Engl. (Fig. 122.) 



Arbor parva; ramulis in sicco quadrangulatis ca. 4-5 mm crassis, internodiis 

 1-3 cm longis; foliis coriaceis obovato -elliptic is vel rhomboideo-ellipticis, 

 5-8 cm longis 3.5-4.5 cm latis, apice acuto, base acutiuscula, marginibus valde 

 revolutis, costa prominenta apice extenta, nervis 2-3 mm distantibus prominulis, 

 petiolo 18-20 mm longo; inflorescentia terminali botryoidea subcompacte multi- 

 flora, 8 cm longa, ramulis carnosis in sicco acute angulosis; bracteis primariis 

 foliaribus, 2-3 cm longis, bracteolis carnosis carinatis deltoideis acutis, 2-3 

 mm longis; floribus masculinis: sepalis 4 decussatis carnosis, ca. 2 mm longis, 

 exterior ibus late ovato-orbicularibus obtusiusculis, interioribus obovato-orbicu- 

 laribus cucullatis; petalis (4) 5 obovato-orbicularibus, ca. 6 mm longis ca. 6 

 mm latis, concavis; staminibus 40-50, filamentis 1-2 mm longis 0.5 mm crassis, 

 liberis, antheris 0.8-1.0 mm longis, loculis lateraliter dehiscentibus connectivo 

 lato excedentibus; floribus femineis ignotis; fructibus ignotis. 



TYPE: tree to 5 m high, leaves thick, flowers with waxy-white petals; most 

 abundant and prominent tree on the 1700 m cumbre, always growing with other 

 vegetation of similar height; all trees flowering at the same time, Uaipan-tepui, 

 Bolivar, Venezuela, February 1-15, 1948, 412 (NY). Paratype: Cerro Uaipan, 700 

 m, Rio Carom', Guayana, arbol 6 m alto, Noviembre 26, 1946, F. Cardona 2064. 



Because of its 4 decussate sepals, 5 small petals, and numerous free stamens, 

 this conspicuous tree of Uaipan-tepui* summits must be assigned to the Eucriuva 

 of sect. Criuva. It apparently has no known immediate relatives in the Gran 

 Sabana region. 



COMPOSITAE 



Verbesina pilosa Maguire & Wurdack, sp. nov. sect. Saubinetia. (Fig. 124.) 



Frutex 2 m altus; caulibus piloso-tomentosis exalatis; foliis alternis, laminis 

 lanceolatis, 12-14 cm longis 2.8-3.5 cm latis, serrulatis denticulis 5-11 mm 

 distantibus chartaceis penninerviis, supra modice pilosis pilis base tuberculatis, 

 subtus dense canescenti-pilosis, base attenuata, apice acuto, petiolis canescenti- 

 pilosis, 1.0-1.5 cm longis; inflorescentia corymbosa, pedunculis dense pilosis; 

 capitulis 10 mm altis 15 mm diam.; involucro 2-3-seriato, bracteis oblanceolatis 

 pilosis, 7-11 mm longis; floribus ligulatis 5-6, 9-0-12.0 mm longis, laminis 

 ovatis 9-11 mm longis, apice 3-denticulato, floribus tubulatis ca. 75-80, tubulo 

 ca. 5.5 mm longo, apice sparse piloso, base per 1.5 mm contracto modice pube- 

 rulo, lobis ca. 0.8 mm longis; achaeniis maturis anguste alatis sparse hispidulis, 

 aristis 2 hispidulissimis 5.0-5.3 mm longis. 



TYPE: cumbre of 1200 m, Uaipan-tepui, Bolivar, Venezuela, February 1-15, 

 1948, 424 (NY). 



Related to V. sordescens DC. from 3razil and Paraguay, but distinguished, 

 by the distinctly petiolate leaves, somewhat larger involucral bracts, denser 

 indumentum, and smaller number of ray flowers*. The leaves closely resemble 

 Sydou 752 from Ecuador (V. inuloides Hier.) but the achene awns in that specimen 

 are much shorter and the leaves are more noticeably tuberculate on the upper 

 surface. Another close relative is V. schomburgkii Schultz-Bip. subsp. eligulata 

 Maguire & Wurdack. 



Calea lucidivenia var. lucidivenia. C. lucidivenia Gleason & Blake, Brittonia 

 3: 193, as to type. 1939- 

 The var. lucidivenia is entirely glabrous. The leaves and outer involucral 

 bracts are devoid of punctate glands. Besides Tate 1324 (type, NY) and Tate 



