1960] 



BOTANY OF THE GUAYANA HIGHLAND PART IV 



27 



ad basem appendicibus flabellatis 1.3 mm long-is ornatis; staminodia usque 20 mm 

 longa, ciliolata. Discus 0.9 mm profundus, usque 1.5 mm diametro, margine crenu- 

 lata ; stylus 10-15.5 mm iongus, glaber. ovarium sparse strigulosum. Fruetorum 

 cocci immaturum venosum, sparse strigulosum, mucronulatum. 



VENEZUELA: Amazonas: Cerro de la Neblina, Kio Yatua ; locally abundant along 

 Canon Grande east of Cumbre Camp, alt. 1100 m; shrub 1-2 m; fls red; 24 Nov 1957, Bassett 

 Maguire, John J. Wurdack $ Celia K. Maguire 42217 (holotype, US no. 2267440). 



As the specific epithet emphasizes, this species is easily separable from most 

 of the other species of the genus by the digitately trifoliolate leaves. The calyx 

 is also very distinctive in shape and the glabrous corolla contrasts with the 

 pubescent corolla of most of the other species in the genus. The simple hairs on 

 many of the parts of E. trifoliolata separates it easily from its nearest relative, 

 B. stelligera, which also has trifoliolate leaves but differs in having stellate 

 pubescence, a cincinnoid-racemose inflorescence, and a different calyx. 



In the type collection are included a number of detached inflorescences which 

 appear to be fasciated ; instead of a simple raceme, which is characteristic of 

 the species, the peduncle bears at its apex up to six racemose branches. 



2. Raveniopsis steligera (Cowan) Cowan, comb, no v. Fig. 20. 



Galipea .stelligrra Cowan, Mem. X. Y. Rot. Gard. 8:121. Apr 1953. 



Shrub or small tree 2-5 m tall, the branchlets densely pubescent with cin- 

 namon>colored, dendroid-stellate hairs. Leaves digitately trifoliolate, dendroid- 

 stellate (except the intervein areas on the upper surfaces), the petioles 1.5-2 cm. 

 long, the petiolules of the lateral leaflets 1-2.5 mm long, that of the terminal one 

 5-9 mm long ; leaflet blades chartaceous, elliptic to somewhat obovate or ob- 

 lanceolate, the lateral leaflets smaller with the base inequilateral, the upper side 

 attenuate-acute, the lower side rounded, 2-7 cm long-, 1-2.5 cm wide, the apex 

 acute or rounded and apiculate, the terminal leaflet larger, its base attenuate- 

 acute, the apex acute, 4-7 cm long, 1-2.5 cm wide, the lower surfaces of the 

 leaflets densely dendroid-stellate-pubescent, much paler than the dark green 

 upper surface, the latter sparingly to sparsely stellate-pubescent on the larger 

 veins, the costa and primary veins impressed above, salient beneath. Inflorescence 

 dendroid-stellate-pubescent, axillary or psuedoterminal, dichasial, the 2-5-cm- 

 long peduncle bearing at its apex one flower and two racemose branches, the 

 bractlets about 1-3 mm long-, subulate, caducous, the pedicels 0.5-1.5 mm long. 

 Flowers pubescent with stellate and dendroid-stellate hairs, coral red to brick 

 red, the sepals more or less unequal, oblong-oval to broadly ovate, obtuse or 

 acute ; corolla with a narrowly f unnelform tube and erect limb, the tube slightly 

 curved, 18-20.5 mm long, 6-7 mm in diameter, the adaxial corolla lobe triangu- 

 lar-lanceolate to broadly ovate, the other lobes triangular to ovate-triangular, 

 acute. Fertile anthers 2.5-3 mm long, oblong, apiculate, the appendages 1.5 mm 

 long, ca. 1 mm wide, flabellate, the staminodia 18.5-20 mm long", ca. 1 mm wide, 



Fig. 12. R. sericea (Wurdack 34297). a, habit, X 0.5; b, flower, X 1-5; c, fertile anther, X 10. 

 Fig. 13. R. fraterna (Steyermark $ Wurdack 811). a, flower, X 1-5. Fig. 14. R. linearis (Tate 

 531). a, habit, X 0.5; b, transverse section of leaf, X 5; c, flower, X 3. Fig. 15. R. paruana 

 (Cowan $ Wurdack 31225). a, habit, X 0.5. Fig. 16. R. peduncularis (Maguire 32754). 

 a, habit, X 0.5; b, flower, X 2. Fig. 17. R. nubicola (Maguire, Wurdack $ Maguire 42297). 

 a, habit, X 0.5; b, calyx spread apart, X2. 



