fpomcea. CONVOLVULACE.E. 211 



-I Creeping (or at least prostrate and not twining) perennials, glabrous or nearly so: flowers rather 

 large, opening at morning. 



I. Pes-caprae, Sweet. Herbage succulent : leaves orbicular, mostly emarginate at 

 both ends, 2-glandular at base, fleshy, pinnately many-veined, 2 or 3 inches long, about 

 equalled by the petiole: sepals oval, obtuse : corolla (nearly 2 inches long) broadly short- 

 funnelform, purple : mature capsule 2-celled : seeds rusty-pubescent. " Hort. Lond. 

 ed. 2, 289 ; " Roth, Nov. PI. 109 ; Desc. Ant. ii. t. 130. /. mar it I ma, R. Br. ; Bot. Reg. t. 319. 

 /. orbicitlaris, Ell. Sk. i. 257. Convolvulus Pes-caprce & Brusiliensis, L. Drifting sands of 

 the coast, Georgia to Texas. (Most tropical coasts.) 



I. acetosaefolia, Roem. & Sch. Stem slender, extensively creeping and freely rooting: 

 leaves slightly succulent, slender-petioled, exceedingly various ; the earlier oblong or sub- 

 cordate, or emarginate at both ends, either entire or panduriform or 3-lobed ; the others 

 sometimes linear, sometimes deeply 3-5-lobed or parted, and the lobes narrowed at base ; 

 lobes obtuse : peduncles 1-flowered : sepals oblong, mucronate or acuminate : corolla 

 oblong-f unnelform, white with yellowish throat, 1 to '2 inches long : capsule globose, thin- 

 walled, half inch broad, 4-eelled : seeds densely villous-vvoolly, globular. Syst. iv. 246; 

 Desc. Ant. ii. 1. 145 ; Meissn. in Fl. Bras. vii. 255, t. 94. /. caniosa, R. Br. Prodr., ex Benth. 

 Fl. Austr.' iv. 420. Convolvulus Uttoralis, L. C. acetosajolius, Valil, Eel. i. 18. C. stoloniferus, 

 Desr. in Lam. Diet. iii. 550 ; Cyr. PI. Rar. i. 14, t. 5. C. obtusilobus, Michx. Fl. i. 139 ; Ell. 

 1. c. Batatas acetosivfulia & Uttoralis, Choisy in DC. Prodr. ix. 008, excl. syn. 7. lon/jifolia, 

 Benth. Sandy sea-coast, S. Carolina to Texas. (Most tropical shores.) 



I. longifolia, Benth. Prostrate stems stout, 6 to 10 feet long: leaves thickish, short- 

 petioled, pinnately-veined, from linear- to oblong-lanceolate, entire, merely obtuse at base, 

 mucronate at tip, 2 to 5 inches long : peduncle 1-flowered : sepals broadly oblong or oval, 

 very obtuse : corolla very broadly open-funnelform, white with purple throat, 4 inches 

 long, or when widely expanded 3 or 4 inches in diameter: capsule ovate, 2-celled, with 

 firm-coriaceous valves, an inch long: seeds oblong, rather minutely hairy at the angles. 

 PI. Hartw. 16 ; Lindl. Bot. Reg. xxvi. t. 21 ; Torr. Bot, Mex. Bound. 149. /. Shumardi, 

 Torr. in Marcy Rep. 191. S. E. Arizona, Tkurber, C. Wright. (Adjacent Mex.) 



I. BATATAS, Lam., the SWEET POTATO of cultivation, belongs here, although it has the 

 fleshy roots of the following, and the stems trail rather than creep : the leaves vary from 

 cordate-hastate to deltoid, and from nearly entire to laciniate-lobed or parted. Origin un- 

 known, unless from I.fastigiata of Trop. Amer. 



f 1 Twining, or at first trailing, but not creeping: leaves cordate or sagittate, or with divisions 



broader than linear. 



H- Perennials, with immense fleshy-farinaceous roots: leaves cordate, entire, or some of them 3-5- 

 lobed : peduncles one several-flowered : sepals oblong or ovate, obtuse or merely mucronate, over 

 half iiiL-h long: corolla over,2 inches long. 



I. Jalapa, Pursh. Freely twining from a napiform or thick fusiform root (white, some- 

 times weighing 40 or 50 pounds), torhentulose-pubescent, at least the lower face of the 

 shallow-cordate plicate-veiny repand or sometimes lobed leaves (these 3 to 5 inches long) : 

 corolla "opening at night," 3 or 4 inches long, white or light pink-purple ; the narrow tube 

 and throat 3 or 4 times longer than the calyx and deep purple : ovary imperfectly 4-celled : 

 seeds densely clothed with long villous wool. Fl. i. 146 ; Bot. Reg. t. 342, 621 ; Griseb. 1. c. 

 Convolvulus Jalapa, L. Mant. 43 ; Desf. in Ann. Mus. Par. ii. 126, t. 40, 41 ; Sims, Bot. Mag. 

 t. 1572. fpomcea macrorhiza, Michx. Fl. i. 141. Conrolndus macrorhisus, Ell. Sk. i. 352. 

 Ipomcea Mechoacan, Nutt. in Am. Jour. Sci. v. 289. 7. Mlchauxii, Sweet, 1. c. ; Chapm. Fl. 

 343. 7. Purshii, Don, Syst. 1. c. Batatas Jalapa, Choisy, Convolv. & DC. 1. c. 333. Light 

 sandy soil along the coast, S. Carolina to Florida. (Mex., TV. Ind., &c.) Apparently same 

 as the Mexican false or Mechoacan Jalap, but root of the U. S. plant hardly purgative. 



I. pandlirata, Meyer. Glabrous or nearly so : stems trailing or twining : root very 

 long and large (at length weighing 10 to 20 pounds) : leaves (2 to 4 inches long) usually 

 cordate and entire, or some of the later angulate or panduriform-cordate, occasionally 

 hastate-3-lobed : corolla rather broadly f unnelform, 2 or 3 inches long, white with a dark- 

 purple throat : ovary only 2-celled: seeds woolly on the angles. Esseq. 100, as to name 

 only ; Ker, Bot. Reg. t. 588 ; Choisy, 1. c. 331. Convolvulus megakrhizos, etc., Dill. Elth. 100, 

 t. 85, fig. 99. C. pandumtus, L. ; Sims, Bot. Mag. t. 1939 ; Ell. 1. c. ; Barton, Med. t. 23. 

 C. candicans, Solander in Bot. Mag. t. 1603, with some minute pubescence of leaves. Var. 



