1958] 



THE BOTANY OF THE GUAYANA HIGHLAND PART III 



57 



Paratypes: VENEZUELA: Territorio Amazonas, Alto Orinoco, Cerro Duida : Maguire 

 $ Maguire £9575 9; Cerro Sipapo: Maguire 4' Politi £7468 2, 27469 2; Cerro Paru, Rio 

 Ventuari, Coican $ WurdacTc 311822, 31282 2, 31389 2 ; Cerro Yutaje: Maguire $ Maguire 

 35072 2 , 35098 2 . 



6. Clusia amabilis Mag-uire, sp. now Figure 9. 



Arbor parva 3-6 dm alta; ramis teretibus tenuibus, latice albido; foliis sub- 

 sessilibus, petiolis amplectantibus aliquantum alatis, 3-5 mm. longis; laminis 

 oblanceolatis coriaceis, 8-10 cm longis, 3-4 cm latis, apice obtuso-rotundato, basi 

 acuta, costa prominentia nervis lateralibus improminulis, canalibus laticiferis 

 adscendenti-parallelis ; inflorescentia foeminea terminali 3-flora ; pedunculis 1.0- 

 1.5 cm longis; bracteis inflorescentiae 1-jugatis; bracteis floris 1-jugatis, deltoi- 

 deis, ca. 1 cm longis, 1 cm latis; sepalis 7, jugis duobus inferioribus appositis, 

 late ovatis, ca. 15 mm longis, 10 mm latis, anguste marginatis, subacutis, cuculla- 

 tis, superioribus subdecussatis vel imbricatis, subcarinatis, valde cucullatis, angu- 

 stioribus ; petalis 8 ; staminodiis numerosis, 2-seriatis, linearibus, 4-5 mm longis, 

 sterilibus ; ovario 5-loculari, valde sulcato ; stylis in columna 2-3 mm longa ad- 

 pressis, partibus liberis rotatis, ca. 2 mm longis, stigmatibus distalibus, ventralibus, 

 ovatis, ca. 2 mm longis; inflorescentia masculina terminali, 3-flora, sepalis 7, a 

 jugis bracteorum densis subtenta ; sepalis inferioribus decussatis, late ovatis 

 obtusis, superioribus subdecussatis vel imbricatis et subacutis, subcarinatis, valde 

 cucullatis, ca. 1 cm longis; petalis 8, albidis, obovatis, 17-20 mm longis, 12-15 mm 

 latis, crenatis erosique ; staminibus numerosis, in disco humili introrsis dispositis, 

 lineari-subclavatis, exterioribus 1.5-2.5 mm longis, interioribus ca. 3.5 mm longis; 

 antheris 4-thecatis, sub apicem lateraliter dehiscentibus ; fructibus non visis. 



Type : shrubby tree 3 m high, latex white, flowers white, infrequent along 

 water-course, west of Serra do Sol (Uei-tepu'i) at 1200 m alt., Brazilian side of 

 frontier, Terr. Rio Branco, Dec 29, 1954, Maguire &- Maguire 40381 $ . 



Specimens examined: Maguire 4' Maguire 40381$ (holotype NY); bushy tree 5 m high, 

 latex white, infrequent along border of woodland at 2200 m alt., Serra do Sol (Uei-tepui), 

 Edo. Bolivar, Venezuela, Dee 29, 1954, Maguire 4' Maguire 404062 (paratype NY). 



Clusia amabilis is most closely allied to C. pusilla, in which the sepals are 

 concave and orbicular, and the styles free to the base. 



7. Clusia schomburgkii Vesque in DC. Monogr. 8: 69. 1893. 

 Clusia roraimana Steyerm. Fieldiana Bot. 28: 391. 1952. 



Type: "Roraima" Schomburgk 717. 



Specimens examined: BRITISH GUIANA. Kaieteur Plateau: Jenman 1259 (K, photo 

 NY); Maguire 4' Fansliauie 23460 2 (K, NY, US), 23460 A 2 (NY), 23461 2 (K, NY); Mt. 

 Ebini, Maguire 32125 2 (NY). VENEZUELA: Edo. Bolivar: "Roraima" Schomburglc 717 

 (holotype P, isotypes G, K, V, NY); Abacapa-tepui at 1300 m alt., SteyermarTc 75199 (F, 

 NY) ; Mt. Roraima, 1030-1115 m alt., SteyermarTc 58606 (holotype of C. roraimana F, photo 

 NY. isotype NY). 



None of the type specimens of C. schomburgkii are well collected or preserved 

 specimens. Primarily on the basis of foliar similarity, however, with some hesita- 

 tion, C. roraimana Steyermark is brought under synonomy with C. schombHrgkii. 

 Likewise, similarity of vegetative character requires the assignment of the Kaie- 

 teur specimens cited above to that species. 



8. Clusia stylosa Maguire, Bull. Torrey Club 75: 419. 1948. 



Type : common, Clusia bush, between Savanna VIII and southwest escarp- 

 ment, Tafelberg, Suriname, Maguire 24625 2 (holotype NY). 



Known only from Tafelberg, where it is commonly distributed in dense low 

 bush and about openings. 



