1963] 



BOTANY OF THE GUAYANA HIGHLANDS PART V 



177 



Arbor 4-12 m ; rami obtuse suleato-quadrangulati demum teretes inflores- 

 centiaque primum sparsissime laxo-setulosi mox glabrati ad nodos caduce 

 pinoideo-furfuracei. Folia in dimensionibus vix disparilia ; petioli 6-17 cm longi 

 supra modice brevi-setosi pilis laxis ; lamina 15-35 X 9-20 cm oblongo-elliptica 

 vel ovato-elliptiea basi late obtusa vel rotundata crasse membranacea, subtus in 

 vcn is venulisque modice vel dense et in superficie sparse longo-setulosa vel brevi- 

 setosa pilis tenuibus sublaxis p. p. glanduliferis glandula oblonga nigra, breviter 

 5-7-plinervata nervis duobus interioribus 3-15 mm supra basim insertis, ad 

 margines inconspicue crenulato-serrulata et modice ciliolata. Panicula 10-15 cm 

 longa anguste oblonga ramis inferioribus ca. 1.5 cm longis paucifloris ad nodos 

 braeteatis bracteis bracteolisque 1.5-2 mm longis setiformibus vel lanceolatis 

 glanduloso-setiferis subpersistentibus ; pedicelli crassi 0-5 mm longi, bracteolis 

 ad hypanthii basim insertis ; flores 5-meri. Hypanthium 7 mm longum glabrum ; 

 calycis tubus 1 mm altus extus sparsissime glanduloso-setulosus, lobis interioribus 

 0.5 mm altis obverse ellipticis glabris extus planis vel ad basim minutissime 

 unituberculatis. Petala 7.5-9 X 6.5-7 mm asymmetrice obovata apice emarginata 

 densiuscule granuloso-pruinosa. Stamina isomorphica glabra; filamenta 7-7.5 mm 

 longa ; antherae 6.5-7 mm longae apice ventraliter incurvatae poro ventraliter 

 inclinato. Stylus 10 X 1 mm apicem versus ad 1.5 mm clavatus glaber ; stigma 

 1.5 mm diam. ; ovarium 3-loculare 1/4-inferum apice truncatum glabrum. 



Tococa tepuiensis Wurdack subsj). tepuiensis. 



Lamina apice graditer acuminata supra sparse breviterque setosa pilis laxis 

 p. p. caduce glanduliferis. 



Tj^pe. Tree 10 m with slender trunk, leaves membranous, dull green above, 

 paler green beneath with raised nerves, calyx pale green, petals in bud white with 

 pink tinge, anthers on one side, curved, dull white, the connective brownish, 

 filaments dull mauve, forested middle slopes near Rio Tirica, Agparaman-tepui, 

 Chimanta Massif, Edo. Bolivar, Venezuela, alt. 1365 m, 5 Mar 1955, J. A. Steyer- 

 mark d' J. J. Wurdack 1261 (holotype US 2342419). Paratypes. VENEZUELA, 

 Edo. Bolivar. Chimanta Massif: escarpment base, Torono-tepui, Steyermark 

 75515-A; forested slopes of Abaeapa-tepm, Steyermark 75184. Terr. Amazonas. 

 Cerro Yutaje: Cano Yutaje, alt. 1500 m, Maguire & Maguire 35350. Cerro de la 

 Neblina: slope forest, alt. 700 m, Maguire, Wurdack, & Maguire 42026. Sierra 

 Parima : headwaters of Rio Siapa and Rio Padauiri, Brazilian boundary, alt. 

 1340 m, F. Cardona 1509. 



Tococa tepuiensis Wurdack subsp. glabrata Wurdack, subsp. nov. 

 Lamina apice hebeti-acuta supra glabra. 



Type. Tree 4-5 m, buds pink, occasional on upper escarpment slopes east of 

 Camp 3, Cerro de la Neblina, Terr. Amazonas, Venezuela, alt. 1700 m, 27 Dec. 

 1953, Bassett Maguire, John J. Wurdack, & George S. Bunting 36918 (holotype 

 US 2342540). 



T. erioneura has completely eglandular lower leaf surface hairs and a blade 

 length/width ratio of 3-4 rather than 2-2.5 ; the flowers of both species show 

 no differentiating characters. Other close relatives of T. tepuiensis include T. 

 desiliens Gleas. (with glandular-setose stems, inflorescence, and hypanthium) 

 and T. cinnamomea Tr. (with non-glandular hairs, basally nerved leaf blades, and 

 dorsally tilted anther pores). Both T. subciliata (DC.) Tr. and T. planifolia 



