58 



MEMOIRS OF THE NEW STORK BOTANICAL GARDEN 



[vcL to 



9. Clusia parvifolia Maguire, sp. nov. Figure 8. 



Arbor flexuosa parva, ad 10 m alta ; latice albido claro ; ramis tenuibus. 

 1.5-2.0 mm diam., internodiis 5-8 mm longis; foliis ellipticis, 2-4 (4.5) cm 

 longis, 14-18 mm latis, apice et basi acutis, costa prominenti, venis prominulis; 

 petiolo brevissimo vel defecto; infiorescentia uniflora terminali; floribus foemi- 

 neis solis visis; sepalis 6, deeussatis, superioribus, ovato-rotundatis, 6-8 mm 

 longis, non crassis, late scariosomarginatis ; petalis 8, albis, oblongis, 10-12 mm 

 longis, erosis; staminodiis clavato-linearibus, ca. 2 mm longis, pro parte fertilibus ; 

 ovario 8-10-loculari ; fructu 15-18 mm longo, subcarnoso, oblongo; stylis 8-10, 

 liberis, ea. 1.5 mm longis; stigmatibus distalibus, ea. 0.3-0.4 mm longis. 



Type: flexuous tree 10 m high with scanty clear latex; petals white, narrowly 

 obovate. ca. 15 mm long; styles ea. 10, elongate, stigmas cuneate, frequent, low 

 CI usia-Oedematopus woodland, slopes of ridge east of Mesa Grande at 1650 in 

 alt., Ilu-tepui, Edo. Bolivar, Venezuela, March 9, 1952, Maguire 33326 9 (holo- 

 type NY). 



Paratopes: Ilu-tepiri, Edo. Bolivar, Venezuela. Small tree, frequent, woodland slopt-> of 

 Mesa Ridge at 1600 m alt., March 11, 1952, Maguire 33.186 9 ; small straggly tree 10 in high, 

 latex scanty, clearish ; styles elongate, 8, arils orange-red, frequent, vicini f y Camp No. 2, at 

 2000 m alt., March 20, 1952, Maguire 33480 9 . 



Clusia parvifolia, like C. cuneata, is somewhat aberrant in sect. Clusiastrum 

 in that it produces clear, scanty, merely whitish Latex, and the flowers only (i 

 sepals in 3 decussate pairs. Otherwise the species is satisfactorily compatible 

 with its relatives in Clusiastrum. Only pistillate trees were observed. The 

 staminodia are pollen-bearing, at least some of them, and are probably functional. 



10. Clusia cuneata Benth. Lond. Jour. Bot. 2: 368. 1843. 

 C. riparia Sagot mms. and in litt. 



Distinctive because of the linear-oblong fruit with a discoid rotate stylar 

 apparatus, this species is set apart from the other members of the section. C. 

 cuneata is the only representative of the group thus far known beyond the 

 periphery of the sandstone areas of the Guayana Highland. It is coextensive 

 with C. crassifolia PL & Tr. and with C. pusilla Steyerm. in the Pakaraima 

 Mountain area of the Highland in western British Guiana and possibly adjacent 

 Venezuela. Further, it is found in sandy mostly riverine sites in lowland British 

 Guiana, French Guiana, and would seem likely to occur in intervening Suriname. 



Specimens examined: BRITISH GUIANA: Upper Mazaruni River, de la Cruz 20416 

 (NY), 2199$ (NY), 2217$ (NY), 2304$ (NY); near Bartica, Jenman 5021$ (NY); 

 Kaieteur Plateau and vicinity, Maguire $ Fanshawe 23012$ (NY), 23325 A $ (NY), 23462$ 

 (NY); riverside, Coomaka, Persaud 196$ (NY); Rockstone, Gleason 849 9 (NY); Kaieteu; 

 Plateau, Maguire $ Fanshawe 23295 9 (NY), 23325 9 (NY), 23463 9 (NY) ; Makreba Falls, 

 Maguire 4- Fanshawe 32385 9 (NY); Makreba Falls, Pinlcus 265 9 (NY); Moraballi Creek, 

 Sandwith 519 (K, NY). FRENCH GUIANA: "Acarouary" (< < Karo-uany ") Sagot 70 (2 

 sheets, K) ; Godebert, Dec 20, 1820, Wachenheim s.n. (K) ; Sehombural- 495 (type K, photo 

 NY). 



Species excluded from sect." Clusiastrum: Clusia fragrans Gardner; Clusia 

 sessilis (Klotzsch) Engler; Clusia plunkettii Urban; Clusia globosa Maguire; 

 Clusia bracteosa Cuatrecasas. 



Clusia L. sect. Cochlanthera (Choisv) Engl, in E. & P. Nat. Pflanzenf. ed 2. 21: 

 202. 1925; emend. Maguire. 



( 1 ochlanthera was proposed as a genus by Choisy {Cochlanthera lanceolata) 

 in 1851, based upon the single collection Fundi & Schlim 714. from Carabobo in 



