254 CONVOLVULACE Æ. 
the top. Corolla pure white, 3-4 inches long; tube very long, 
and limb large. Lobes of stigma linear-oblong. 
Salver-shaped-flowered Rivea. Fl.? Clt. 1817. Shrub tw. 
3 R. onNaA'rA (Choisy, l. c. p. 409. t. 3.) leaves orbicularly 
cordate, or reniform ; peduncles elongated, spicately panicled or 
umbellate; sepals ovate-lanceolate, bluntish ; corolla tubular, 
very narrow. b. ^. S. Native of the East Indies, as of 
Cawnpore, Nipaul, Coromandel, Mungger, &c. Convolvulus 
candícans, Roth, nov. spec. p. 106. Roem. et Schultes, syst. 4. 
p. 2973, 790.  Lettsómia ornata, Roxb. fl. ind. 2. p. 86.  Argy- 
réia ornàta, Sweet, hort. brit. p. 289. Conv. ornatus, Roxb. 
mss. Wall. cat. no. 1369. Conv. tarita, Wall. cat. no. 2253. 
Stem white; branches silky. Leaves clothed with cinereous 
tomentum beneath, large. Bracteas villous. Corolla 3 inches 
long, purple. Berry cherry-shaped. Lobes of stigma linear- 
oblong. According to Roxb. l. c., the flowers are large, and 
pure white. 
Adorned Rivea.  Fl.? Clt.1824. Shrub tw. 
4 R. sóNa-Nóx (Choisy, l. c.) leaves cordate-roundish, or 
altogether roundish, sometimes villous beneath ; peduncles 
shorter than the petioles, commonly 3-flowered; sepals ovate- 
cordate, obtuse; corolla very wide. kh. ^. S. Native of 
Bengal, in the forests of Midnapore.  Lettsómia Bóna-nóx, 
Roxb. fl. ind. 2. p. 84.  Argyréia bóna-nóx, Sweet, hort. brit. 
p. 289. Clove-scented creeper, Asiat. res. 4. p. 257. Young 
branches hairy. Leaves acuminated or obtuse, sometimes emar- 
ginate ; petioles villous. Peduncles 1-3-flowered. ^ Corolla 
white, fragrant ; lobes of stigma capitate. Berry 1-celled, 1-4- 
seeded. The flowers of this species are large. and pure white, 
expanding at sun-set, and perfuming the air to a considerable 
distance, with a fragrance resembling that of the finest cloves ; 
in fact, it is the prince of convolvulaceous plants. 
Good-night Rivea, or Midnapore Creeper. 
Clt. 1799. Shrub tw. 
5 R.? opre'cra (Choisy, l. c. p. 410.) leaves lanceolate, acu- 
minated, glabrous above, and silky beneath; peduncles many- 
flowered, longer than the petioles, but not so long as the leaves ; 
sepals ovate-obtuse, tomentose outside ; corolla campanulate. h . 
^.S. Native of Tavoy and Amherst. Convólvulus obtéctus, 
Wall. cat. no. 1416. Branches strigosely tomentose, from ad- 
pressed white hairs. Flowers umbellate. Corolla showy, silky 
and hairy outside, 3 inches long. Stigma capitate, 2-lobed. 
Covered Rivea. Shrub tw. 
Cult. The species of Rivea are strong, growing, extensive, 
twining plants, bearing very large and very showy flowers. 
They require a great deal of room to flower them. They may 
be trained up the rafters, or upon trellis-work, in a stove. A 
rich, light soil, or a mixture of loam and peat, is the best for 
them; and cuttings strike root readily in sand or mould, under 
a hand-glass, if placed in heat. 
Fl. July, Oct. 
II. MARTPA (the Caribbean name of the tree.) Aubl. guian. 
l.p. 230. t. 91. Lam. ill. t. 110. Choisy, in mem. soc. phys. 
genev. 6. p. 411.—Ehrétia species, Lam. and Poir. 
Lis. syst. — Pentándria, Monogy'nia. Sepals 5, coriaceous, 
imbricate. Corolla campanulate, 5-lobed at top. Stamens 
5, equal in height to the tube of the corolla. Style 1; stigma 
capitate, simple, furrowed. Ovarium 2-celled ; cells 2-ovulate. 
Fruit baccate, coriaceously woody, 1-celled by abortion, and 1- 
seeded. Albumen wanting.? Cotyledons thick, ovate. ?— 
Trees and shrubs, natives of Guiana. Branches scandent, ten- 
drilled at top. Leaves alternate, smooth. Flowers white, dis- 
posed in loose or thick panicles; bracteas scale-formed at the 
peduncles, which are villous. 
1 M. sca’npEns (Aubl. 1. c.) scandent, cirrhiferous ; leaves 
ovate, petiolate, acuminated, glabrous; panicles loose, brac- 
I. Rivea. 
II. Marra. III. Arcyreta. 
teate; calyx villous ; corolla spreading; style elongated. h. 
^. S. Native of Guiana, on the banks of the river Sinemari. 
Ehrétia cirrhdsa, Lam. dict. 1. p. 527.  Ehrétia scandens, 
Poir. suppl. 3. p. 590. Segments of corolla short, ovate- 
roundish, obtuse, crenulated. 
Climbing Maripa. Shrub tw. 
2 M. xnx'crA (Meyer. pim. ess. p. 115.) arboreous, erect ; 
leaves oblong, glabrous; panicle strict ; limb of corolla erect, 
exceeding the style. hk. S. Native of Guiana, about the 
river Essequibo. 
Erect Maripa. Tree. à 
3 M. viniósa (Spreng. syst. 1. p. 648.) stem suffruticose, 
erect; leaves sessile, roundish, acutish, villous, ciliated ; panicles ' 
strict, bracteate. 5. S. Native of Brazil. 
Villous Maripa. Shrub erect. 
Cult. - For culture and propagation see Rivea, above. 
II. ARGYREIA (from apyvpstoc, argyreios, silvery; in 
reference to the silvery undersides of the leaves.) Lour. coch. 
p: 134. Choisy, in mem. soc. phys. gen. 5. p. 411.—Lettsomia, 
species, Roxb. and Wall.—Convélvulus and Ipomæ'a, species of 
authors. 
Lin. syst.  Pentándria, Monogynia. Sepals 5. Corolla 
campanulate. Style 1; stigma capitate, 2-lobed. Ovarium 2- 
celled ; cells bi-ovulate. Capsule baccate.—Extensive, twining 
shrubs, with a showy aspect, for the most part silvery, but 
sometimes silky and tomentose. 
Secr. I.  Pryxa'wTHus (from mrok, piyz, a plait; and 
avSoc, anthos, a flower; in reference to tbe plicate corolla.) 
Corolla nearly entire, with 5 plaits at top. Stamens inclosed. 
1 A.sPrcro'sA (Sweet, hort. brit. p. 289. Choisy, in mem. 
soc. phys. 6. p. 411.) tomentose ; leaves large, cordate, acute, 
glabrous above, or rarely villous, thickly nerved beneath, and 
clothed with silky, silvery down; peduncles about equal in length 
to the petioles, umbellately capitate; bracteas acute, unequal; 
sepals ovate, very blunt. 5^.^'. S. Native of the East Indies, 
in forests and hedges in Hindostan, Java, and the Isle of France. 
Convólvulus nervósus, Burm. ind. 48. t. 20. f. 1. Conv. spe- 
ciósus, Lin. suppl. p. 137, exclusive of the country. Smith, 
icon. ined. 17. Ipomæ'a speciòsa, Pers. ench, 1, p. 183. Sims, 
bot. mag, 2446.  Lettsómia nervosa, Roxb. fl. ind. 2. p. 78. 
Samüdra stógam, Rheed, mal. 11. p. 125. t. 61. Leaves 3-12 
inches long, and 2-4 broad, dark green above. Corolla nearly 2 
inches long, of a deep rose-colour, hairy in the plice outside. 
Showy Argyreia. Fl. July, Aug.- Clt. 1818. Shrub tw. 
2 A. snACTEA'TA (Choisy, in mem. soc. phys. gen. 6. p. 412.) 
clothed with silky hairs; leaves oblong-roundish, acute at 
apex, glabrous above, and clothed with silky, rufescent 
down beneath ; peduncles exceeding the petioles a little, cymose, 
many-flowered ; bracteas lanceolate, compassing the cyme ; 
sepals ovate-lanceolate or elliptic, acutish. p. ^. S. Native 
of the East Indies. Convólvulus pomaceus? Roxb. ex Wall. 
cat. no. 1419. Ipomee'a bracteata, Heyne, herb. Leaves 2-3 
inches long, and 1-2 broad, clothed with silky, rufescent down 
beneath, with ciliated edges; petioles, bracteas, and outside of 
sepals, villous. 
Bracteate-flowered Argyreia. Shrub tw. 
3 A. Lescuenav’tri (Choisy, mem. soc. phys. gen. 6. p. 413 ) 
clothed with cinereous, silky down; leaves ovate-elliptic, acutish, 
beset with strigose hairs above, and silky tomentum beneath ; 
peduncles shorter than the leaves, cymose, many-flowered ; brac- 
teas ovate or linear, intermixed with the flowers ; sepals ovate, 
bluntish, glabrous. h. ©, S. Native of Mysore, and the 
Neelgherry mountains. Convélvulus Choisyànus, Wall. cat. no- 
3259. l. no. 2. Stem fistular. Leaves nerved, 2-3 inches long, 
