CONVOLVULACEZ. 
8 Leproca’tus. Ovarium 4-celled ; cells 1-seeded. 
2-lobed, capitate. 
Stigma 
Corolla with a slender tube, and a spreading 
limb. 
9 Bara‘ras. Ovarium 4-celled; cells 1-seeded. Corolla 
campanulate. Genitals inclosed. 
10 Puarsiris. Ovarium 3-celled; cells 3-seeded, 
11 Catony'ction. Ovarium 2-celled, or somewhat 4-celled, 
4-seeded. Corolla funnel-shaped. Genitals exserted. 
12 ExocówivM. Ovarium 2-celled; cells 2-seeded. Corolla 
tubular. Genitals exserted, 
13 Lepiste‘mon. Ovarium 2-celled; cells 2-seeded. Stamens 
inclosed, with a scale at the base of each. 
14 Iromæ'a. Ovarium 2-celled; cells 2-seeded. 
inclosed. Stigma 2-lobed ; lobes capitately globose. : 
15 JacauEMÓNTIA. Ovarium 2-celled ; cells 2-seeded. Sta- 
mens inclosed. Stigma 2-lobed; lobes complanately ovate. 
Stamens 
16 CowvórvuLus. Ovarium 2-celled; cells 2-seeded. Sta- 
mens inclosed. Stigma 2-lobed; lobes teretely filiform. 
17 Antisera. Ovarium 2-celled; cells 2-seeded. Lobes of 
stigma capitate. Sepals not verticillately inserted. 
18 Potyme‘r1a. Ovarium 2-celled; cells 1-seeded ; stigmas 
4-6, teretely filiform. 
19 CALYSTE`GIA. 
celled, 4-ovulate. 
lucrate. 
Ovarium 1-celled, as also somewhat 2- 
Lobes of stigma filiform. Bracteas 2, invo- 
20 SHUTERE IA. Ovarium 1-celled, 4-ovulate. Stigma 2- 
lobed ; lobes complanately ovate. 
21 Sxinne‘nia. | Ovarium 1-celled, 4-ovulate. Stigma 2- 
lobed ; lobes capitately globose. 
22 Pona'NA. Ovarium 1-celled, 2-4-ovulate. Sepals in- 
creasing unequally after flowering. Stigmas globose. 
23 Duverre‘ya. Capsule 1-celled, 1-seeded. 
thick. Calyx propped by 2 small bracteas. 
Stigma large, 
§ 2. Style bifid, or styles tno. 
24 Nevrore'ttis. Ovarium 1-celled. 
Capsule 1-seeded. 
Styles 2; stigmas 
fleshy. Bracteas large, surrounding the 
capsule. 
25 Prevésrea. Ovarium 2-celled. Style 1, bifid. Outer 
sepals involving the flower. 
26 Brewe'r1a. Ovarium 2-celled. Style 1, bifid. Sepals 
nearly equal. Genitals inclosed. 
27 Bona‘mia. Ovarium 2-celled. 
nearly equal. Genitals exserted. 
28 Cnz'ssa. Ovarium 2-celled. Styles 2; stigmas globose. 
Stamens exserted. 
29 Evórvurus. Ovarium 2-celled. Styles 2, bifid. 
30 CrapósrYres. Capsule 1-celled, 1-seeded. Styles 2, bifid. 
31 Wirsóxria. Ovarium small, 2-seeded. Style 1, bifid. 
Calyx tubular. 
Style 1, bifid. Sepals 
TRIBE ITI. 
Dicuénprex. Embryo without cotyledons. Carpella dis- 
tinct. 
I. Rivea. 253 
32 DicnóNpRa. Ovaria two. 
33 FA'Lxi4. Ovaria 4. 
True IV. 
Cuscu' TEx. 
84 Cuscuv' TA. 
Embryo acotyledonous. 
Plants parasitical. 
T A genus doubtful whether it belongs to the present order. 
35 Mouroucòa. Calyx 5-parted: the 2 outer segments 
covering the rest. Corolla funnel-shaped ; limb large, spreading, 
5-lobed. Stamens inserted in the upper part of the tube, and 
opposite the lobes. Stigma bilamellate. Capsule girded by the 
calyx, 3-celled ; cells 1-seeded. 
Tribe I. 
ARGYREIEXE (this tribe contains plants agreeing with the 
genus Argyréia, in having a baccate pericarp.) Choisy, in mem. 
soc. phys. genev. 6. p. 407. Embryo cotyledonous. Carpels 
combined into a single ovarium. — Pericarp baccate, indehiscent. 
I. RI'VEA (this genus is dedicated by Choisy, to his friend 
Auguste de la Rive, a physician of Geneva.) Choisy, in mem. 
soc. phys. gen. 6. p. 407.— Convólvulus, Ipomæ'`a, and Lettsdmia, 
species of authors. 
Lin. syst. — Pentándria, Monogynia. 
tubular or funnel-shaped, showy, Style 1; stigma capitate or 
lamelliform, 2-lobed. Ovarium 4-celled, 4-ovulate. Capsule 
baccate.—-T'wining, suffruticose, very showy plants, the flowers 
of which exceed in size all other convolvulaceous plants. 
1 R. rizpEFOLIA (Choisy, l. c. p. 407.) leaves cordate-round- 
ish; peduncles usually 1-flowered, rarely 2-4-flowered ; sepals 
ovate-roundish, very blunt, equal; corolla inflato-cylindrical. 
5.^.S. Native of the East Indies, as of Penang, Travancore, 
Philippine Islands, banks of the Ganges, &e; also of the Isle of 
France, Cape of Good Hope. The same plant is said also to be 
found in America, as in St. Domingo, St. Vincent, and Peru. 
Convólvulus tilizfolius, Desr. in Lam. dict. 3. p. 544. Ipome'a 
tilizefolia, Roem. et Schultes, syst. 4. p. 229. Ipome'a Gangética, 
Sweet, hort. brit. ed. 2d. p. 288.  Ipomze'a Benghalénsis ?, 
Roth. ex Roem. et Schultes, syst. 4. p. 229. Convólvulus Gan- 
géticus, Roxb. fl. ind. 2. p. 46. Convdlvulus spectábilis, Brit, 
Sepals 5. Corolla 
mus. Conv. grandiflorus, Brit. mus. LettsOmia microcàlyx, 
Wight. Convélvulus leucántha, and Ipome'a salicifdlia, Herb. 
madr. Conv. marginatus, Hamilt. herb. Ipoma'a baccifera, 
Russell, herb. Stem downy or smoothish. Young branches 
villous. Leaves obtuse or acuminated, downy beneath, while 
young rather tomentose. Corolla tubular, 2-3 inches long, 
white. Seeds silky on the angles. Sepals reniform, emargi- 
nate, increasing in size with the fruit, and covering it at all times, 
ex Roxb. Lobes of stigma round. 
Tilia-leaved Rivea. Fl. May, Aug. Clt. 1812. Shrub tw. 
2 R. HYPOCRATERIFÓRMIS (Choisy, l. c. p. 408.) leaves cordate- 
roundish ; peduncles 1-flowered, sometimes axillary and solitary, 
sometimes disposed in a spicate manner at the tops of the 
branches; sepals ovate, obtuse, unequal; limb of corolla salver- 
Shaped: tube very narrow. b. ^. S. Native of the East 
Indies, in forests, over the southern parts of the Carnatic and 
Tanjore country, Trincomala, and Travancore. Convólvulus 
hypocraterifórmis, Desr. in Lam. dict. 3. p. 561. Conv. can- 
dicans, Roem. et Schultes, syst. 4. p. 302. but not of Roth. 
Lettsómia uniflora, Roxb. fl. ind. 2. p. 85.  Ipomse'a candícans, 
Roxb. herb. Argyréia uniflóra, Sweet, hort. brit. p. 289. Stem 
downy or villous. Leaves obtuse, rarely white and villous be- 
neath. Peduncles villous, furnished with 2 bracteas at or near 
