482 



RUBIACEJE. XV. EXOSTEMMA. 



trans, vol. 74. Cinchona Luciana, Vittm. sinnm. suppl. 1. p. 

 264. Kinkina Piton. Act. nat. cur. 1787. Rozier, journ. de 

 phys. 1781. p. 169-179. and 1789. p. 129-132. t. 1. Murr. 

 append, med. vol. 1. p. 941. Panicle large, corymbose, ter- 

 minal. Leaves like those of Coffea Ardbica, 5-6 inches long. 

 Corolla 2 inches long before expansion, of a whitish purple 

 colour. The Quinquina Piton is of a cinnamon colour, and is 

 used as a succedaneum for Peruvian bark, but is somewhat 

 drastic. 



Bundle-flowered Exostemma. Clt. 1794. Tree 20 to 80 ft. 



11 E. CAPITA'TUM (Spreng. new. entd. 2. p. 143.) leaves ovate, 

 coriaceous, glabrous; flowers capitate ; calyx small, 5-toothed ; 

 corolla with a long tube, and revolute segments. Jj . S. Native 

 of South America. Perhaps only a variety of E. floribundum. 

 Specimens of this tree were received under the name of St. 

 Lucia bark. 



Capitate-flowered Exostemma. Tree. 



SECT. II. BRACHYA'NTHUM (from /Spa^vc, brachys, short, and 

 ovfloe, anthos, a flower ; in reference to the tube of the flower 

 being shorter than the segments). D. C. prod. 4. p. 360. Limb 

 of calyx divided even to the base into teeth. Corolla having 

 the tube shorter than the segments of the limb, or at the longest 

 hardly equal in length to them. Stigma sometimes undivided, 

 and sometimes somewhat 2-lobed. Corolla glabrous, or pu- 

 bescent on the outside. 



12 E. PHILIPPICUM (Rcem. et Schultes, syst. 5. p. 366.) 

 leaves oval, acute, crowded, and are as well as the branches and 

 flowers glabrous ; peduncles terminal, corymbose ; teeth of 

 calyx short, acute ; tube of corolla rather shorter than the 

 segments of the limb ; filaments hairy. Jj . S. Native of the 

 Philippine Islands, at Manilla : and in Santa Cruz de la Laguna. 

 Cinchona Philippica, Cav. icon. 4. t. 329. Peduncles axillary, 

 tricliotomous, corymbose, bearing 2 leaves at the origin of the 

 branches, about the length of the leaves. Corolla 9 lines long 

 before expansion. Stigma clavate, marked by a furrow on 

 each side, probably from the cohesion of the lobes. Capsule 

 turbinate, 5 lines long, crowned by the calycine limb. Bark 

 bitter and astringent. 



Philippine Exostemma. Tree 10 to 15 feet. 



13 E. CORYMBIFERUM (Roem. et Schultes, syst. 5. p. 20.) 

 leaves oblong, acute, and are as well as the branches and flowers 

 glabrous ; peduncles axillary, corymbose, bearing 2 leaves just 

 below the ramifications ; teeth of calyx short, acute ; segments 

 of corolla hardly shorter than the tube. Tj . S. Native of the 

 islands of Tongatabu and Eaove, in the Pacific Ocean, where it 

 is cultivated for the elegance and odour of its flowers. Cin- 

 chona corymbifera, Forst. act. nov. ups. 3. p. 176. Lin. fil. 

 suppl. p. 144. Lamb, cinch, p. 25. t. 5. Leaves deep green, size 

 of those of Coffea Ardbica : having the nerve purplish beneath. 

 Corymbs trichotomous. The bark is very bitter and sub- 

 astringent, and very like Jesuits' bark. Flowers white, but red- 

 dish on the outside. 



Corymb-bearing Exostemma. Tree 10 to 15 feet. 



14 E. PERUVIA'NUM (Humb. et Bonpl. pi. equin. 1. p. 133. 

 t. 38.) leaves ovate or oblong, acute, rounded at the base : the 

 superior ones sessile and cordate ; corymbs terminal, sessile ; 

 peduncles and calyxes pubescent ; corolla silky outside, f? . S. 

 Native of Peru, on the declivities of the Andes, in cold places 

 by the sides of streams, at the altitude of 3000 feet. H. B. et 

 Kunth, nov. gen. amer. 3. p. 404. Cinchona Peruviana, Poir. 

 suppl. 4. p. 640. Flowers rose-coloured. Leaves smooth, 

 deep green above. Segments of corolla hardly shorter than the 

 tube. Filaments glabrous, adnate to the throat of the corolla. 

 btigma obsoletely 2-lobed. Teeth of calyx acute. 



Peruvian Exostemma. Tree 10 to 12 feet. 



15 E. CORYMBO'SUM (Spreng. syst. 1. p. 706.) leaves oblong- 

 lanceolate, acute, and are as well as the branches and flowers 

 glabrous ; corymbs terminal, brachiate ; teeth of calyx almost 

 linear, acute, spreading ; segments of corolla about equal in 

 length to the tube, fy . S. Native of Peru, in hot places 

 between Chaclla and Muna. Portlandia corymbosa, Ruiz et 

 Pav. fl. per. 2. p. 49. t. 190. f. a. Leaves shining above, 2-3 

 inches long. Corolla white : having the limb reflexed. Capsule 

 fuscous, turbinate. Seeds girded by a membranous wing, hence 

 it is not a species of Portlandia. 



Corymbose-dowered Exostemma. Tree 15 to 18 feet. 



16 E. DISSIMILIFLO'RUM (Roem. et Schultes, syst. 5. p. 17.) 

 leaves cordate-oblong, quite glabrous ; limb of corolla longer 

 than the tube ; capsules almost linear, very narrow. F? . S. 

 Native of South America, at the altitude of 6000 or 7000 feet. 

 Cinchona dissimiliflorum, Mutis, in Humb. berl. mag. nat. 1. 

 p. 120. 



Dissimilar -flowered Exostemma. Tree. 



SECT. III. PSEUDOSTE'MMA. Limb of calyx campanulate, 

 sub-tubular, truncate, or somewhat 5-toothed. Corolla usually 

 villous on the outside : having the tube shorter than the seg- 

 ments of the limb. Stigma usually 2-lobed. Fruit unknown. 

 Flowers disposed in panicles. Species natives of Brazil. Per- 

 haps a proper genus. 



17 E. CUSPIDA'TUM (St. Hil. pi. usuel. bras. 1. t. 3. f. A.) 

 leaves ovate-lanceolate, cuspidate, nerved, villous beneath ; pa- 

 nicle terminal ; limb of calyx campanulately tubular, obscurely 

 5-toothed, longer than the ovarium ; corolla villous on the out- 

 side : with the segments longer than the tube ; filaments villous 

 in the middle ; stigma bifid. Pj . S. Native of Brazil, in woods. 

 Leaves 9-15 lines long. Corolla white, 2-4 lines long. Fruit 

 unknown. It is called QuiiM do mato, and the bark is used as a 

 substitute for Peruvian bark. 



Cuspidate-leaved Exostemma. Tree 8 to 10 feet. 



18 E. AUSTRA'LE (St. Hil. pi. usuel. bras. 1. t. 3. f. B.) leaves 

 ovate, nerved, rather villous beneath ; panicle terminal, sessile, 

 tripartite ; limb of calyx campanulate, shorter than the ovarium, 

 bluntly 5-toothed ; corolla rather pubescent on the outside : 

 with the segments longer than the tube ; filaments glabrous ; 

 stigma undivided, fj . S. Native of Brazil, in woods. Leaves 

 12-15 inches long, and 7-8 broad. Style villous. The bark of 

 this and the preceding species is employed by the Brazilians in 

 the cure of intermittent fevers, from the want of more efficacious 

 remedies. It is bitter and a little astringent. 



Southern Exostemma. Tree 8 to 10 feet. 



19 E. FORMO'SUM (Cham, et Schlecht. in Linnaea. 4. p. 179.) 

 leaves obovate-elliptic, acute at both ends, rather granular when 

 examined under a lens ; panicle trichotomous, loosely pyramidal ; 

 limb of calyx quite entire ; corolla glabrous on the outside, but 

 the throat is villous, and the segments are rather pilose on the 

 inside, and a little longer than the tube ; stigma 2-lobed. T? S. 

 Native of Brazil, within the tropics. 



Far. a, leprosum (D. C. prod. 4. p. 361.) leaves large; tube 

 of corolla shorter than the segments of the limb. 



Var. ft, Itzve (D. C. 1. c.) leaves lanceolate ; tube of corolla 

 longer than the segments of the limb. 



Showy Exostemma. Tree. 



20 E. SOUZA'NUM (Mart. reis. ex Linnaea. 5. p. 45.) leaves 

 obovate or ovate, acute, glabrous ; corymbs few-flowered, ter- 

 minal ; capsules hardly an inch long, obovate, compressed ; 

 valves usually 4-nerved ; seeds transversely oblong, with a broad 

 margin. Tj . S. Native of Brazil. 



Sauza's Exostemma. Tree. 



21 E. MACROCNE'MIA ; branches naked ; leaves oblong-spatu- 

 late, acuminated, tapering into the short petioles, smooth on both 



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