216 schomburgk's guiana plants. 



454. Calycophyllum coccinewn, DC. Prod. iv. 367. — San 

 Gabriel on the Rio Negro, Schomburgk, n. 1011. — The speci- 

 mens are perfectly similar to those I have from Trinidad. 



455. Buena triflora; foliis ovali-ellipticis obtusis, floribus 

 ternis pedicellatis, corollse limbi laciniis oblongis obtusis. — 

 Arbor 20 — 30-pedalis. Ramuli crassi, subcarnosi. Folia 

 3 — 5-pollicaria, petiolata, crassa, nitida. Stipulae ovatee ob- 

 tusse V. emarginatae, membranacese, deciduse, vel florales sub 

 pedicello persistentes. Pedicelli fere pollicares. Calycis 

 tubus turbinatus, limbus deciduus, breviter 5-fidus. CorolliE 

 tubus 3 — 3^ poll, longus, crassiusculus, glaber ; limbi laciniae 

 ultrapoUicares, intus minute subpuberula^, aestivatione con- 

 torto-imbricativa. Antherae superiori tubo insert*, lineares, 

 obtusffi, basi sagittatae, e fauce dilatata breviter exsertse. 

 Stylus breviter exsertus, stigmate crasso bilamellato. Ova- 

 rium biloculare, placentse in qaoque loculo magnae bialatse, 

 ovulis numerosis adscendentibus imbricatis, appendice mem- 

 branacea apice lacera terminalis. — Falls of the Rio Quitaro, 

 Schomburgk. n. 553. 



The above species is truly congener to the Peruvian B, 

 acuminata, and B. obtusifolia, and form a very natural genus 

 very nearly allied, it is true, to Hillia, but perfectly distinct 

 from Ciyichona by the form of the flower, and more especially 

 by the aestivation of the corolla. The Buena hexandra of 

 Pohl, and Cosmibuena ochracea of Endlicher, on the contrary, 

 are as unlike tliem in habit as in character ; they have the 

 valvate aestivation, and as far as I can see, all the essentials of 

 true Cinchon(B, with nearly the habit of C. macrocarpa, C. 

 Roraimce^ ^c. 



Gardner's n. 450, from the Organ Mountains is Coutarea 

 speciosa, Aubl., his 2195 from Piauhy is a new species of 

 Coutarea, so also n. 2196 from the same province, notwith- 

 standing its pentamerous flowers. No. 455 and 456, from 

 the Organ Mountains, and 1699 from Ceara, belong to 

 Manettia, Blanchet's n. 2838, from Serra Acurua, is Cou- 

 tarea mollis, Cham. 



