1961] 



BOTANY OF THE GUAYANA HIGHLANDS PART IV (2) 



45 



axis and rather different flowers with a setulose ovary apex. In vegetative and 

 flower characters, T. hirta seems the closest relative, bnt differs widely in in- 

 florescence nature, having* a loose panicle with a few pedicellate flowers. The 

 thickened inflorescence axis of T. pachystachya is not at all teratologic, being 

 constant throughout the abundant Neblina population; such an axis can be 

 seen developed to some extent in such other species as T. setifera Pilger and 

 T. stellata Gleason, both of which have otherwise nothing suggestive of very 

 close relationship with T. pachystachya. 



Tococa bolivarensis Gleason subsp. occidentalis AVurdack, subsp. nov. 



Rami nodis exceptis glabri; folii lamina ad margines primum ciliata sed 

 eiliis valde caducis alioqui glabra ; hypanthium glabrum ; calycis tubus et lobi 

 sparse glanduloso-setosi. 



VENEZUELA: Arnazonas: Cerro Yutaje, Kio Manapiare, occasional on rocky slopes and 

 cliffs below summit, alt. 2000-2100 m; rounded densely branched shrub 1-3 m high, petals rose- 

 colored, stamens pale yellow; 17-19 Feb 1953, Bassett Maguire 4' Celia E. Maguire 35309 

 (holotype, NY); Cerro Yutaje, alt. 2200 m, Maguire $ Maguire 35319; Cerro Yavi, alt. 2200 

 m, Phelps 4' Hitch cock 43 , 65 (paratypes). 



In typical T. bolivarensis, known only from Estado Bolivar (Carrao-tepui, 

 Steyermark 60856; Serra do Sol, Maguire & Maguire 40410), the branchlet 

 internodes are sparsely glandular-setose and also thinly furfuraceous with 

 clavate sessile glands, the hypanthium as well as the calyx is glandular-setose, 

 and the leaf blades are persistently glandular-ciliate as well as plus-or-minus 

 glandular-setulose marginally above and on the primary veins beneath. The 

 mature calyx of both subspecies is obscurely 5-lobed, rather than strictly 

 truncate as originally described. 



Clidemia neblinae Wurdack, sp. nov. Fig. 33, A, B. 



C. tococoicliac (DC.) Gleas. et C. crenulatac Gleas. in aspectu vegetative 

 affinis sed inflorescentia bene evoluta et floribus 5-meris. 



Rami cum petiolis modice setosi, set is rigidis patentibus 2-3 mm longis et 

 glandula caduca terminatis, et densissime setulosi setulis ca. 0.5 mm longis 

 plusminusve deflexis, ad basim petiolorum vesiculiferi vesiculis reflexis ca. 1 cm 

 longis dense setosis. Petioli (2-) 8-13 cm longi; lamina membranacea (13-) 

 20-35 X (6-) 13-27 cm ovata apice subabrupte per 1-2 cm acuminata basi leviter 

 cordata ad margines crenato-denticulata denticulis ca. 3-4 per cm et 0.5-1 mm 

 profundis, 7- vel debiliter 9-nervata nervis secundariis ca, 5-8 mm inter se dis- 

 tantibus tertiariis laxe reticulatis nervis omnibus supra subplanis subtus graci- 

 liter paulo elevatis, supra in superficie sparse strigulosa (pilis ca. 1/mm 2 ) et in 

 venis primariis modice reflexo-setulosa pilis omnibus caduco-glanduliferis et ca. 

 0.5-1 mm longis, subtus in venis primariis densiuscule setulosa in venulis sparse 

 setulosi pilis non-glandulosis plerumque ca. 0.3-0.7 mm longis. Inflorescentia 

 paniculata densissime reflexo-setulosa (setulis ca. 0.3-0.5 mm longis) ca. 10 cm 

 longa, ramis principalibus lateralibus duobus oppositis ad 7 cm longis subbasila- 

 ribus. Fructus 5-meri sessiles teretes ca. 5 mm diam. densiuscule puberuli setulis 

 ca. 0.2-0.3 mm longis ad apicem breviter 5-lobati dentibus interioribus exterio- 

 ribus aequantibus lobis singulis seto unico 1—1.5 mm longo glandulifero ter- 

 minatis; ovarium 3-loculare apice glabrum; semina numerosa laevia ovoidea ca. 

 0.5 X 0.3 mm. 



VENEZUELA: Arnazonas: Cerro de la Neblina, frequent in high montane forest 6-8 km 



