

RUBIACE^E. XV. EXOSTEMMA. XVI. DANAIS. XVII. MANETTIA. 



483 



surfaces, shining; stipulas connate at the base, and running 

 sound the petioles, and forming a callous semicircular margin to 

 them ; thyrse axillary, panicled, loose ; flowers minute, tetra- 

 merous ; fruit cylindrical ; seeds furnished with a quite entire 

 rounded membrane at both ends. Tj . S. Native of South 

 America, on the banks of the Amazon. Cinchona macrocnemia, 

 Mart, in bot.zeit.no. 7. p. 119. 1831. 



Long-stamened Exostemma. Tree. 



Cult. See Cinchona, p 479., for culture and propagation. The 

 species are of freer growth than those of Cinchona ; and the 

 cuttings should not be too ripe when taken off. 



XVI. DAN A' IS (Safari, danae, the laurel of Alexandria; 

 similarity). Comm. herb. Vent. tabl. 2. p. 584. Pers. ench. 

 1. p. 198. Juss. mem. mus. 6. p. 385. D. C. prod. 4. p. 361. 

 Paederia species, Juss. gen. p. 204. Lam. ill. t. 166. f. 2. 

 Danais, spec. Poir. Cinchona species, Pet. Th. 



LIN. SYST. Pentdndria, Monogynia. Flowers dioecious from 

 abortion. Calyx with a short obovate tube, and a small limb, 

 which is 5-toothed to the base. Corolla funnel-shaped, with a 

 slender tube, a villous throat, and a 5-parted limb. Stamens 

 exserted in the male flowers, but abortive and inclosed in the 

 female flowers. Style exserted in the female flowers, and bifid 

 at the apex, but abortive in the male flowers. Capsule globose, 

 coriaceously chartaceous, marked by an areola at the apex 

 from the fallen calyx, 2-celled, dehiscing at the cells, 2-valved. 

 Seeds small, fixed to central placentas, imbricated downwards, 

 girded by a membranous wing ; albumen fleshy. Smooth, 

 climbing, or straggling shrubs, natives of the Mauritius. Roots 

 exuding a yellow juice when bruised. Leaves oblong or round- 

 ish. Stipulas solitary on each side, broad, very short. Pedun- 

 cles axillary, many-flowered, corymbose, with opposite branch- 

 lets. Flowers fragrant, orange-coloured, sometimes hexamerous. 



1 D. FRA'ORANS (Comm. ex Lam. ill. t. 166. f. 2.) leaves 

 oblong ; corymbs crowded ; capsule not furrowed, crowned by 

 the permanent, spreading, calycine teeth. Jj . ^,. S. Native 

 of the Mauritius. Gaertn. fit. carp. 3. p. 83. 1. 195. D. fragrans 

 /3, coronata, Pers. ench. 1. p. 198. Psederia fragrans, Lam. 

 diet. 2. p. 260. Cinchona A'fro-I'nda, Willem. herb. maur. p. 

 16. Petioles 3-4 lines long. Corymbs crowded, many-flow- 

 ered, twice longer than the petioles. Segments of corolla 

 narrow, spreading. Flowers small, red, swelling like those of 

 Narcissus. 



Fragrant Danais. Shrub cl. 



2 D. LAXIFLO'RA (D. C. prod. 4. p. 361.) leaves obovate, 

 obtuse, and cuspidate ; corymbs loose, sub-panicled ; cap- 

 sule not furrowed, crowned by the erect permanent calycine 

 teeth, fj . w . S. Native of Madagascar and Bourbon. Pe- 

 tioles 4 lines long. Panicle of female flowers 2-3 inches long, 

 but that of the males is unknown. 



Loose-fionered Danais. Shrub cl. 



3 D. ROTUNDIFO'LIA (Poir. suppl. 2. p. 450.) leaves ovate- 

 roundish, acutish at the apex ; corymbs crowded ; capsule not 

 furrowed, crowned by the toothless truncate limb of the calyx. 

 fj . ^. S. Native of the Mauritius, where it is called Liane 

 de bois jaune. Cinchbna chlorrhiza, Bory, in litt. Malanea 

 verticillata, Sieb. fl. maur. exsic. 2. p. 264. exclusive of the 

 synonymes. Petioles 7-8 lines long 



much shorter than the leaves. 

 inches long. 



Round-leaved Danais. Shrub cl. 



4 D. SULCA'TA (Pers. ench. l.p. 198.) leaves ovate ; capsule 

 furrowed, crowned by the calycine segments, which are folia- 

 ceous. Tj . w . S. Native of the Mauritius, where it climbs 

 over the highest trees. 



Furrowed-fiuhed Danais. Shrub climbing. 



Corymbs hardly an inch, 

 lowers small. Leaves 2-3 



Cult. A mixture of loam, peat, and sand will be a good soil 

 for the species of Danais ; and cuttings will be easily rooted 

 under a hand-glass, in heat. They are well fitted for training 

 up the rafters in a stove. 



XVII. MANETTIA (named after Xavier Manetti, prefect 

 of the botanic Garden at Florence, and secretary of the botanic 

 society there. Author of Viridarium Florentinum 1751 : and 

 Regnum Vegetabile, 1756). Mutis, in Lin. Mant. (1771.) p. 

 556. gen. ed. vii. no. 171. Schreb. gen. 181. H. B. et 

 Kunth, nov. gen. amer. 3. p. 387. D. C. prod. 4. p. 361. but 

 not of Adans. Nacibea, Aubl. (1775.) guian. 1. p. 96. t. 37. 

 Juss. mem. mus. 6. p. 384. exclusive of Forsk. syn. and the 

 syn. in fl. per. 



LIN. SYST. Tetra-Pentandria, Monogynia. Calyx with a 

 turbinate tube, and the limb parted into as many lobes as there 

 are corolline segments, or double that number (f. 88. a.), and 

 often furnished with lobules in the recesses between the seg- 

 ments. Corolla funnel-shaped, with a terete tube, a hairy 

 throat (f. 88. c.) and a 4 (f. 88. 6.), rarely 5-parted limb. An- 

 ther sessile in the throat. Capsule ovate, compressed, crowned 

 by the calycine lobes (f. 88. d.), dehiscing from the apex to the 

 base at the dissepiment (f. 88. d.) : the divisions boat-shaped. 

 Placentas somewhat exserted from the dissepiment. Seeds 

 imbricate, almost sessile, peltate, surrounded by a winged mem- 

 branous border, which is usually toothed. Embryo erect, in 

 fleshy albumen ; cotyledons foliaceous, lanceolate. Perennial, 

 herbaceous, or suffruticose plants : having the stems and branches 

 twining and slender. Leaves ovate-oblong, or subcordate. 

 Stipulas broad, short, acute, usually adhering to the petioles 

 at the base. Peduncles axillary, 1 or many-flowered. 



SECT. I. LYOISTUM (from Xuyoc, lygos, a twig ; in reference 

 to the twiggy stems). D. C. prod. 4. p. 362. Lygistum, P. 

 Browne. Manettia, Mutis, Lin. and Schreb. Lobes of calyx 

 twice the number of those of the segments of the corolla, usually 

 8 (f. 88. a.), rarely 10 ; besides the accessory lobules. 



1 M. RECLINA'TA (Lin. mant. p. 553.) stem herbaceous, re- 

 clinate, weak, branched ; leaves ovate, acute, pubescent beneath ; 

 peduncles axillary, many-flowered, shorter than the leaves ; 

 pedicels opposite, hairy. . w . G. Native of Mexico. Corolla 

 white. Calyx 8-lobed ; lobes linear, concave, hairy. Nacibea 

 reclinata, Poir. in Lam. diet. 4. p. 416. 



Reclinate-brancheA Manettia. PI. tw. 



2 M. RACEMO'SA (Ruiz et Pav. fl. per. 1. p. 58. t. 89.) stems 

 twining ; branches tetragonal ; leaves ovate or oblong, acumin- 

 ated ; stipulas semi-circular, acuminated, ciliated ; racemes ax- 

 illary, few-flowered, longer than the leaves ; corollas hairy. I? . 

 ^. S. Native of Peru, in groves at Cuchero and Chinchao. 

 M. mutabilis, Pers. ench. 1. p. 



134. Nacibea mutabilis, Poir. 

 suppl. 4. p. 55. Lobes of calyx 

 8, but in the ultimate flowers 10, 

 according to the figure ; and 

 sometimes 4-5, according to the 

 description. Corolla purplish. 



7?ocemose-flowered Manettia. 

 Shrub tw. 



3 M. COCCINEA (Willd. spec. 

 1. p. 625.) stems twining; 

 branches tetragonal ; leaves 

 ovate, acuminated, glabrous, 

 shining ; stipulas oblong, acute ; 

 peduncles axillary, racemose, 

 few-flowered, shorter than the 

 leaves. T? . ^. S. Native of 

 French Guiana. Ker. bot. reg. 693 



3 a 2 



FIG. 88. 



Nacibea coccinea, Aubl. 



