251 



CONVOLVULACE/E. I. RIVEA. II. MARIPA. III. AROYREIA. 



the top. Corolla pure white, 3-4 inches long; tube very long, 

 and limb large. Lobes of stigma linear-oblong. 



Salver-shaped-Qovtered. Rivea. Fl.? Clt. 1817. Shrub tw. 



3 R. ORNA'TA (Choisy, 1. c. p. 409. t. 3.) leaves orbicularly 

 cordate, or reniform ; peduncles elongated, spicately panicled or 

 umbellate ; sepals ovate-lanceolate, bluntish ; corolla tubular, 

 very narrow. Ij . / "\ S. Native of the East Indies, as of 

 Cawnpore, Nipaul, Coromandel, Mungger, &c. Conv61vuliis 

 candicans, Roth, nov. spec. p. 106. Rcem. et Schultes, syst. 4. 

 p. 273, 790. Lettsomia ornata, Roxb. fl. ind. 2. p. 86. Argy- 

 reia orn&ta, 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. 1. c., the flowers are large, and 

 pure white. 



Adorned Rivea. Fl. ? Clt. 1824. Shrub tw. 



4 R. BONA-NOX (Choisy, 1. 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. ^ . ( "\ S. Native of 

 Bengal, in the forests of Midnapore. Lettsomia B6na-nox, 

 Roxb. fl. ind. 2. p. 84. Argyreia bona-nox, 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. Fl. July, Oct. 

 Clt. 1799. Shrub tw. 



5 R. ? OBTE'CTA (Choisy, 1. 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. ^ . 



\ S. Native of Tavoy and Amherst. Convolvulus obtectus, 

 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. 



II. MAR?PA (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. Ehretia species, Lam. and Poir. 



LIN. SYST. Pentandria, 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'NDENS (Aubl. 1. c.) scandent, cirrhiferous ; leaves 

 ovate, petiolate, acuminated, glabrous ; panicles loose, brac- 



teate ; calyx villous ; corolla spreading ; style elongated. Jj . 

 ^. S. Native of Guiana, on the banks of the river Sinemari. 

 Ehretia cirrhosa, Lam. diet. 1. p. 527. Ehretia scandens, 

 Poir. suppl. 3. p. 590. Segments of corolla short, ovate- 

 roundisli, obtuse, crenulated. 

 Climbing Maripa. Shrub tw. 



2 M. ERE'CTA (Meyer, pirn. ess. p. 115.) arboreous, erect; 

 leaves oblong, glabrous ; panicle strict ; limb of corolla erect, 

 exceeding the style, f? . S. Native of Guiana, about the 

 river Essequibo. 



Erect Maripa. Tree. 



3 M. VILLOSA (Spreng. syst. 1. p. 648.) stem suffruticose, 

 erect; leaves sessile, roundish, acutish, villous, ciliated; panicles 

 strict, bracteate. F? S. Native of Brazil. 



Villous Maripa. Shrub erect. 



Cult. For culture and propagation see Rivea, above. 



III. ARGYRE'IA (from apyvpeios, 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. Convolvulus and Ipomae'a, species of 

 authors. 



LIN. SYST. Pentandria, 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. 



SECT. I. PTYXA'NTHUS (from TTTV^,, ptyx, a plait ; and 

 avSos, anthos, a flower ; in reference to the plicate corolla.) 

 Corolla nearly entire, with 5 plaits at top. Stamens inclosed. 



1 A. SPECIO'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. rj . . S. Native of the East Indies, 

 in forests and hedges in Hindostan, Java, and the Isle of France. 

 Convolvulus nervosus, Burm. ind. 48. t. 20. f. 1. Conv. spe- 

 ciosus, Lin. suppl. p. 137, exclusive of the country. Smith, 

 icon. ined. 17. Ipomae'a speciosa, Pers. ench. 1, p. 183. Sims, 

 bot. mag, 2446. Lettsomia nervosa, Roxb. fl. ind. 2. p. 78. 

 Samudra stogam, 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 plicae outside. 



Shomj Argyreia. Fl. July, Aug. Clt. 1818. Shrub tw. 



2 A. BRACTEA'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. Ij . *"*. S. Native 

 of the East Indies. Convolvulus pomaceus ? Roxb. ex Wall, 

 cat. no. 1419. Ipomae'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-fiowered Argyreia. Shrub tw. 



3 A. LESCHENAU'LTII (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. \j . ^. S. Native of Mysore, and the 

 Neelgherry mountains. Convolvulus Choisyanus, Wall. cat. no. 

 2259. 1. no. 2. Stem fistular. Leaves nerved, 2-3 inches long, 



