274 



CONVOLVULACE^E. XIV. IPOMCEA. 



Ff'ofaceojw-flowered Ipomoea. Fl. Aug. Sept. Clt. 1792. 

 PI. tvv. 



100 I. CORYMBOSA (Roth. nov. spec, p. 220.) leaves cordate; 

 peduncles umbellate; stem creeping. If.. r *. S. Native of 

 tropical America, Lin. ; St. Domingo, and the East Indies, 

 Heyne. Conv. corymbosus, Lin. spec. p. 225. Desr. in Lam. 

 diet. 2. p. 555. Plum. ed. Burm. t. 89. f. 2. mss. vol. 2. t. 50. 

 Leaves like those of Calystegia septum, 2-3 inches long, thin. 

 Corolla white, spreading ; star of limb of 5 white rays. 

 Capsule turbinate, 1-celled, 2-8-seeded. Seeds roundish, 

 brown. 



Var. fi ; petioles stipulate at the base. !(.. r> . S. Native of 

 Cayenne, Bonpl. 



Corymbose-fiowered Ipomcea. Fl. Aug. Sept. Clt. 1 823. 

 PI. creeping. 



101 I.AMCE'NA (Blum, bijdr. p. 718.) leaves roundish-cordate, 

 acuminated, quite entire, very soft on both surfaces ; peduncles 

 elongated, cymosely many-flowered ; sepals lanceolate, acumi- 

 nated, spreading : outer ones the largest. If.?'"'. S. Native 

 of the Moluccas. Corolla purple. 



Pleasant Ipomcea. Fl. Nov. PI. tw. 



102 I. MULTIFLO'RA (Roem. et Schultes, syst. 4. p. 234.) leaves 

 cordate, glabrous ; peduncles many-flowered ; seeds rusty, vil- 

 lous. . l/.^.S. Native of Jamaica. Conv. multiflorus, Mill. 

 diet. no. 15. Plukn. phyt. t. 167. f. 1. Stems slender. 

 Flowers racemose, on long peduncles. Corolla purple. Cap- 

 sule trigonal, S-celled ; cells 1 -seeded. Perhaps a species of 

 Batatas. 



Many-flowered Ipomoea. Fl. June, July. Clt. ? PI. tw. 



103 I. TRI'COLOR (Cav. icon. 3. p. 5. t. 208) glabrous ; leaves 

 cordate, acuminated ; flowers axillary, subumbellate ; peduncles 

 thicker than the stem ; calyx fleshy, pentagonal ; sepals keeled. 

 O. r> . S. Native country unknown. Conv. venustus, Spreng. 

 syst. 1. p. 600. Calyx of a dark violet colour. Corolla with 

 a 5-lobed, crenulated blue limb and a whitish tube, having the 

 inside angles spotted with red. 



Three-coloured-fiowered Ipomcea. PI. tw. 



104 I. OSYRE'NSIS (Roth. nov. spec. p. 220. Rcem. et 

 Schultes, syst. 4. p. 2y9.) shrubby ; leaves cordate-ovate, ob- 

 tuse, undivided, glabrous above, but clothed with dense, silky 

 tomentum beneath ; flowers subcapitate, almost sessile, mixed 

 with oblong-lanceolate bracteas ; corolla oblong-campanulate, 

 strigose outside ; stem tomentose. If. . ? / "\ ? S. Native of 

 the East Indies, in Osyre, where it is called Mala-Erikaliga. 

 Conv. Osyrensis, Heyne. Stigma capitate, didymous, tuber- 

 cled. 



Osyre Ipomoea. Shrub twining. 



105 I. RACEMOSA (Poir. suppl. 4. p. 634.) stem terete, grey, 

 downy ; leaves ovate-cordate, obtuse, coriaceous, downy be- 

 neath ; flowers racemosely panicled ; peduncles hispid ; brac^ 

 teas downy, concave, lanceolate, involving the calyx and ex- 

 ceeding it ; sepals lanceolate, acuminated, glabrous. ^ . / "\ S. 

 Native of St. Domingo. Conv. racemosus, Spreng. syst. 1. p. 

 600. Leaves 2 inches long, clothed with white silky down be- 

 neath. Peduncles beset with numerous short hairs. Corolla 

 white, with a thick cylindrical tube, twice as long as the brac- 

 teas ; limb short of 5 acute lobes. 



/Racemose-flowered Ipomcea. Shrub tw. 



106 I. FERRUGINEA (Rcem. et Schultes, syst. 4. p. 240.) plant 

 clothed with rusty tomentum ; stem terete ; leaves ovate-cor- 

 date, acute ; peduncles axillary, 4-flowered ; sepals unequal : 

 the 3 outer cordate, acuminated, and the 2 inner shorter and 

 lanceolate. T; . *"\ S. Native of South America. Conv. ferru- 

 gineus, Vahl, eclog. 1. p. 17. Willd. spec. 1. p. 858. Petioles 

 length of leaves. Leaves linear above. Peduncles length of 

 petioles. Corolla unquicular, blue. Stigma thickened, ex Vahl. 



Rusty Ipomcea. Shrub tw. 



107 I. HETEROPHY'LLA ; twining, rather downy ; leaves has- 

 tately S-lobed : lobes acute, entire ; peduncles many-flowered ; 

 sepals equal, oblong, acute. If.. ^. S. Native of Guinea. 

 Conv. diversifolius, Schum. pi. guin. p. 94. but not of Choisy. 

 Stems filiform, hairy. Leaves glaucous, as well as downy be- 

 neath. Peduncles naked, usually 7-flowered. Corolla campa- 

 nulately funnel-shaped, size of C. septum, white, with a viola- 

 ceous throat ; limb obsoletely 5-lobed. Seeds tomentose. 



Various-leaved Ipomcea. PI. tw. 



108 I. VENTRICOSA (Bert, in Coll. hort. rip. p. 37. under Con- 

 volvulus) glabrous ; leaves broad-cordate, acuminated, quite 

 entire, glabrous ; peduncles generally 4-flowered, bracteate ; 

 calyxes acute, coriaceous, ventricose. 0. r *. S. Native of 

 Guadeloupe, in gardens ; but originally introduced from the 

 Island of St. Bartholomew. Corolla large, white, funnel-shaped, 

 glabrous. 



Pen/rzcose-calyxed Ipomcea. PI. twining. 



109 I. HOOKE'RI; glabrous; leaves on long petioles, deeply 

 cordate, acuminated ; peduncles 3-4-flowered, thickened, and 

 somewhat racemose ; sepals small, erect, adpressed, linear-subu- 

 late, margined with white ; corolla large, funnel-shaped, with a 

 very short tube, and a 5-angled limb ; having the angles mucro- 

 nate. *; . . S. Native of Mexico, in the province of Gua- 

 naxuato. Ipomce'a rubro-ccerulea, Hook. bot. mag. t. 3297. 

 Corolla white in the bud, with the limb of a rich lake-red, which 

 when the flower is fully expanded, becomes of a fine purplish 

 blue. Filaments hairy. Stigma capitate, 2-lobed. This is pro- 

 bably a species of Rlvea. 



Hooker's Ipomcea. Fl. July, Aug. Clt. 1830. Shrub tw. 



* * * Peduncles generally 3-flonered. 



110 I. OBSCU'RA (Ker. bot. reg. t. 239. Rcem. et Schultes, 

 syst. 4. p. 236.) stem herbaceous, interruptedly glabrous, and vil- 

 lous from hairs ; leaves cordate, acuminated, glabrous ; pedun- 

 cles exceeding the petioles, 1-3-flowered ; pedicels thickened, 

 bracteate ; sepals oblong-ovate, sometimes obtuse, sometimes 

 acuminated. 0. / "\ S. Native of the East Indies, every- 

 where. Ip. solanifolia, Burm. ind. p. 49. Ip. insuavis, Blum, 

 bijdr. p. 716. Conv. obscurus, Lin. spec. p. 220. Burm. ind. 

 44. Wall. fl. ind. 2. p. 52. Conv. gemellus, Vahl, symb. 3. 

 p. 27. Dill. elth. 98. t. 83. f. 95. Conv. trigonus, Ham. herb. 

 Ip. gemella, Roth. nov. spec. 240, Bracteas lanceolate, acute, 

 glabrous ; calyx glabrous. Corolla campanulate, glabrous, 3-4 

 times longer than the calyx, yellow, with a purple throat ; 

 lobes emarginate. Seeds downy. 



Far. ft, glabra (Choisy, 1. c. p. 464.) stem glabrous ; pedi- 

 cels equal ; seeds sometimes clothed with grey down, and 

 sometimes glabrous. . / "\ S. 



Obscure Ipomcea. Fl. June, Aug. Clt. 1732. PI. tw. 



111 I. TRIA'NTHA (Rcem. et Schultes, syst. 4. p. 243.) gla- 

 brous ; leaves cordate-lanceolate, attenuated, glabrous, obtuse ; 

 peduncles 3-rlowered, shorter than the leaves ; sepals obtuse. 

 .?^. S. Native of the East Indies. Conv. triflorus, Vahl, 

 symb. 3. p. 30. Leaves 2 inches long, rounded and mucronate at 

 apex ; hind lobes obtuse, very rarely angular. Pedicels bract- 

 less, angular. Corolla 3 times longer than the calyx ; lobes 

 pilose at apex. 



Three-flowered Ipomcea. PI. tw. 



112 I. TRIFLORA (Forsk. egypt. p. 44.) glabrous; leaves cor- 

 date, acuminated, glabrous ; peduncles axillary, 3-flowered. . 

 ^. S. Native of Arabia, in Hadje. Gmel. syst. p. 343. Vittm. 

 summ. 1. p. 440. Corolla pale yellow ; limb undivided, an inch 

 in diameter. 



Three-florvered Ipomcea. PI. tw. 



113 I. WEINMA'NNI (Rcem. et Schultes, syst. 4. p. 245.) 



1 



