APOCYNEZE. XLII. Ravworria. 
Shining-leaved Rauwolfia. FI. Chee 1759; 
Tree 12 feet. 
4 R. Brazitir'nsis (Spreng. syst. 1. p. 834.) leaves 3 ina 
whorl, elliptic-oblong, acute, opaque, having the veins and 
nerves downy beneath; peduncles 1-flowered, axillary, thick, 
and are, as well the calyxes, silky. h.S. Native of Brazil. 
Brazilian Rauwolfia. Shrub. 
5 R. rARvIFLORA (Bert. ex Spreng. syst. 1. p. 834.) leaves 3 
in a whorl, oblong-lanceolate, rather unequal; peduncles 1- 
flowered, capillary, axillary, shorter than the leaves. h. S. 
Native of Brazil. 
Small-flowered Rauwolfia. Shrub. 
6 R. cane’scens (Lin. syst. 250.) leaves 4 in a whorl, oblong- 
obovate, acuminated, downy; corymbs few-flowered. h. S. 
Native of Jamaica, and other West India Islands. R. subpubés- 
cens, Lin. spec. 303. R. hirsüta, Jacq. amer. p. 47. ed. pict. p. 
259. f. 17.—Plum. gen. 9. icon. 236. f. 2.—Sloane, jam. 173. 
hist. 2. p. 107. t. 188. f. 1.—Pluk. phyt. 266. f. 2. Branches 
rather tomentose. Leaves more tomentose beneath than hairy. 
Calycine segments lanceolate. Segments of corolla nearly 
square, sub-emarginate. Drupes dark red. Flowers small, red.? 
Canescent Rauwolfia. Fl. June. Clt. 1739. Shrub 2 to 8 feet. 
7 R. tomentosa (Lin. spec. 303.) leaves 4 in a whorl, ob- 
long, attenuated at both ends, tomentose ; corymbs few-flowered. 
k. S. Native on rocks and walls, of Carthagena, in South 
America. Jacq. amer. 48. obs. 2. t. 35. Flowers small, white. 
Calycine segments ovate. Fruit at length nearly black. 
Tomentose Rauwolfia. Fl. April, Oct. Clt. 1823. 
3 to 4 feet. 
* * Species natives of the East Indies. 
June, Sept. 
Shrub 
8 R. Sumarra‘na (Jack, mal. misc. 1. no. v. p. 22. ex Roxb. fl. 
ind. 2. p. 543. Blum. bijdr. p. 1034.) leaves 3-4 in a whorl, 
cuneate-oblong, or obovate, glabrous ; umbels or corymbs termi- 
nal, pedunculate, few-flowered ; mouth of corolla shut by 5 
fascicles of villi. 5. S. Native of Java and Sumatra, frequent 
in the neighbourhood of Bencoolen. "This shrub resembles the 
Manggalaut, or Tanghinia Mánghas, in habit and foliage. 
Leaves 6 inches long. Flowers small, white. Segments of 
corolla roundish. Stigma peltate. This species resembles X. 
nitida, but is sufficiently distinguished by its inflorescence. The 
wood, being light, is employed by the Sumatrans, for scabbards 
to their swords, and krises. 
Sumatra Rauwolfia. Tree 12 to 15 feet. 
* * * A species native of Africa. 
9 R. vomiroria (Afz. rem. guin. ex Spreng.) leaves 4 in a 
whorl, oblong-lanceolate, on long petioles; branches tetragonal; 
flowers axillary, umbellate. ^. S. Native of Guinea. 
Vomit Rauwolfia. Shrub. 
Cult. For culture and propagation see Taberncemontàna, p. 92. 
XLIII. DISSOLE' NA (from ic, dis, double; and owAny, 
solen, a tube; the lower part of the tube of the corolla is different 
from that of the upper.) Lour. coch. p. 138. 
Lin. syst. Pentándria, Monogynia. Calyx tubular, 5-cleft ; 
segments subulate, erect. Corolla with a long tube of two 
forms: lower part thick, pentagonal, and staminiferous ; upper 
part cylindrical: limb spreading, 5-cleft. Stamens inserted be- 
neath the mouth of the lower part of the tube. Style shorter 
than the stamens; stigma sub-ovate, thick, scabrous. Drupe 
small, ovate, containing a compressed, scabrous, 1-celled, 1- 
seeded nut.— An upright shrub, with spreading branches. Lower 
leaves opposite ; upper ones 3-4 in a whorl.  Racemes sub- 
divided, terminal. Corollas white. Drupes black, glabrous. 
Nearly allied to Raunólfia or Ochrósia. 
XLIII. DissorENA. 
XLIV. Ocunosr4.. XLV. Opnioxyton. 99 
1 D. venTICILLA TA (Lour. coch. p. 138.) h.G. Native 
of China, in the province of Canton. Cérbera Chinénsis, Spreng. 
syst. 1. p. 643. 
Whorled-leaved Dissolena. Fl.? Clt. 1812. Shrub 8 feet. 
Cult. For culture and propagation see T'aberncemontàna, p. 92. 
XLIV. OCHRO'SIA (from wypoc, ochros, pale yellow ; 
colour of flowers.) Juss. gen. 144.  Labill. sert. cal. 25. 
Cérbera species of authors. 
Lin. syst. Pentándria, Monogynia. Calyx small, 5-toothed, 
or 5-parted. Corolla funnel-shaped ; segments of the limb 2- 
lobed, spreading, oblique. Stamens 5, inserted in the throat. An- 
thers inclosed. Stigma thick, 2-lobed. Fruit twin, or solitary by 
abortion, drupaceous, each containing a 2-4-celled nut; each cell 
1-2-3-seeded. Seeds oblong, unequal, flat, with membranous 
edges, albuminous ?—Glabrous shrubs, with verticillate leaves, 
4 in a whorl; and dichotomous corymbs of flowers. 
1 O. Borsonica (Juss. gen. p. 145.) leaves 4 in a whorl ; 
ovate-lanceolate, shining; corymbs terminal, and in the forks of 
the branches. h. S. Native of Bourbon, Isle of France. 
Ophióxylon Ochrósia, Pers. ench. 1. p. 266. Rauwólfia striata, 
Poir. dict. 4. p. 85. no. 5. suppl. 4. p. 120. and p. 656. Dide- 
rota amphicárpa, Comm. mss. Cérbera Borbonica, Spreng. 
syst. 1. p. 642. Habit of Ophidxylon serpentinum. Stem yel- 
lowish. Leaves 2-5 inches long, greenish yellow beneath. 
Corymbs dense. Corolla cream-coloured. Drupes 2-celled. 
Bourbon Ochrosia. Fl.? Clt. 1823. Shrub. 
2 O. macuxa'ra (Jacq. coll. 4. p. 218. icon. rar. 2. t. 321, ex- 
lusive of the syn. of Forst. Dryander, in Lin. trans. 2. p. 227.) 
leaves 3-4 in a whorl, oblong-lanceolate, acuminated at both 
ends, undulated, veiny, spotted; corymbs terminal, and in the 
forks of the branches, or axillary. h.S. Native of the Island 
of Bourbon. Cérbera maculàta, Willd. spec. 1. p. 1223. Cerbéra 
undulata, Andr. rep. t. 130. The leaves only spotted in the 
dried state, shining, 4 inches long. Corolla white, with a red 
throat. Fruit yellow, acuminated, containing a 2-celled nut. 
Spotted-leaved Ochrosia. Shrub 4 to 6 feet. 
3 O. xrrírrICA (Labill. sert. cal. p. 25. t. 30.) leaves elliptic, 
3 in a whorl; drupe 4-celled. h. S. Native of New Cale- 
donia. An erect shrub. Leaves emarginate, coriaceous; pe- 
tioles furnished with papilleform or lamellose resin inside. 
Flowers sub-corymbose, interpetiolar and terminal.  Follicles 
sub-triquetrous. 
Elliptic-leaved Ochrosia. Shrub erect. 
4 O. PARVIFLÒRA; leaves 4 in a whorl, oblong, bluntish, pa- 
rallelly-veined, flat; cymes pedunculate, sub-axillary, branched, 
divaricate. h. S. Native of the Sandwich Islands. Cérbera 
parviflora, Forst. prod. no. 121. Hook. and Arn. in Beech. voy. 
pt. bot. p. 90. Very nearly allied to O. maculata. 
Small-flowered Ochrosia. Shrub 3 to 4 feet. 
Cult. For culture and propagation see Taberncemontána, p. 92. 
XLV. OPHIO'XYLON (from oótc, ophis, a serpent; and 
&vXov, zylon, wood; twisted root and stems.) Lin. gen. no. 142. 
Juss, gen. 221. Gaertn. fruct. 2. p. 129. t. 109. Roxb. fl. ind. 
2. p. 530. Blum. bijdr. p. 1037. 
Lix. syst.  Pentándria, Monogynia. Calyx 5-cleft, or 5- 
toothed, permanent. Corolla funnel-shaped, with a long tube, 
which is thickened in the middle, and a 5-cleft, oblique limb. 
Anthers almost sessile, inserted in the middle of the tube. 
Ovarium didymous; lobes l-ovulate. Style filiform, inclosed ; 
stigma capitate. Drupe baccate, black, size of a pea, twin, or 
solitary by abortion, each containing a l-seeded, wrinkled nut. 
Embryo inverted, straight, nearly as long as the albumen, with 
round, cordate cotyledons, and a sub-cylindrical radicle. Albu- 
men conforming to the seed, greenish white.—4A glabrous, twining 
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