CONVOLVULACEA. 393 
78. Ipomea purga, Hayne, Arzn. Gew. xii. tt. 33 et 34; DC. Prodr. ix. p. 374; 
Meissn. in Fl. Bras. vii. p. 221. 
Ipomea schiedeana, Zucce. in Flora, 1831, p. 801, non Ham. 
Exogonium purga, Benth. Pl. Hartw. p. 46; Bot. Reg. 1847, t.49; Bentl. & Trim. Med. Bot. t. 186. 
Exogonium dumosum, Benth. loc. cit. 
Convolvulus purga, Wenderoth in Pharm. Centralb. i. p. 457. 
Ipomea jalapa, Schiede et Deppe in Don, Gen. Syst. iv. p. 271, non Pursh. 
SoutH Mexico, Orizaba (Botteri, 561), Cordillera of Vera Cruz (Galeotti, 1355), valley 
of Cordova (Bourgeau, 1730), San Cornelio and Zacualtipan (Hartweg). Hb. Kew. | 
79. Ipomea purpurea, Lam. Ill. n. 2129; Meissn. in FI. Bras. vii. p. 223; 
A. Gr. Synop. Fl. N. Am. ii. p. 210. 
Convolvulus purpureus, Linn.; Bot. Mag. tt. 113, 1005, 1682. 
Pharbitis hispida, Choisy in DC. Prodr. ix. p. 341. 
Texas to CarirorntA.—Mexico, Zacoalco (Bourgeau, 727), Oaxaca (Galeotti, 1377), 
Orizaba (Botteri, 565), Guadalupe (Bourgeau, 794).—CoLomBIA ; VENEZUELA; WEST 
InDIES ; and naturalized in many other countries. Hb. Kew. 
80. Ipomea quamoclit, Linn. Sp. Pl. p. 227; Bot. Mag. t. 244; Meissn. in FL. 
Bras. vil. p. 217; A. Gr. Synop. Fl. N. Am. ii. p. 209. 
Quamoclit vulgaris, Choisy in DC. Prodr. ix. p. 336. 
Generally dispersed in TROPICAL and SUBTROPICAL regions, including Mexico and 
CrentraL AmMeRiIcA. Hb. Kew. 
81. Ipomea quinquefolia, Griseb. Fl. Brit. W. Ind. p. 468; Meissn. in Fl. 
Bras. vii. p. 289. 
Batatas quinquefolia, Choisy in DC. Prodr. ix. p. 339. 
Convolvulus ampelopsifolius, Cham. et Schl. in Linnea, v. p. 118? 
GuaTeMaLA, San Antonio (Hartweg); Nicaragua, Realejo (Sinclair); Panama 
(Seemann).—Southward to Perv and Bo.ivia, and in the West Inpies. Hb. Kew. 
82. Ipomea rubro-cerulea, Hook. Bot. Mag. t. 3297; DC. Prodr. ix. p. 375. 
Ipomea hookeri, Don, Gen. Syst. iv. p. 274. 
SoutH Mexico, Guanajuato (Richardson), Cuernavaca (Bourgeau, 1405). Hb. Kew. 
83. Ipomea schiedeana, Ham., ex Lindl. Bot. Reg. 1838, Misc. p. 19; DC. 
- Prodr, ix. p. 875, non Zucc. 
Mexico, introduced into European gardens (Schiede). 
84. Ipomoea serotina, Reem. et Schult. Syst. iv. p. 215. 
Quamoclit serotina, Don, Gen. Syst. iv. p. 259. 
Convolvulus serotinus, DC. Hort. Monsp. p. 97. 
Pharbitis ? serotina, Choisy in DC. Prodr. ix. p. 341. 
Mexico (Alaman, Berlandier). 
85. Ipomea serpyllifolia, Don, Gen. Syst. iv. p. 267; DC. Prodr. ix. p. 351. 
Convolvulus serpyllifolius, H. B. K. Nov. Gen. et Sp. iii. p. 95. 
South Mexico, near Moran and Regla, at 7500 feet (Humboldt & Bonpland). 
BIOL. CENTR.-AMER., Bot. Vol. II., February 1882. 3@ 
