CONVOLVULACEA. 399 
4, Evolvulus argenteus, Pursh, Fl. Am. Sept. i. p. 187, non R. Br.; A. Gr. 
Synop. Fl. N. Am. ii. p. 219. 
Nesraska to Texas and Arizona.—NortH Mexico, Chihuahua (Gregq¢). Hb. Kew. 
5. Evolvulus argyreus, Choisy, Conv. Rar. p. 153, et in DC. Prodr. ix. p. 447? 
Mexico (Beechey). Hb. Kew. 
Perhaps a distinct species. The type is from Ecuador. 
6. Evolvulus arizonicus, A. Gr. Synop. Fl. N. Am. ii. p. 218. 
Evolvulus holosericeus, var. obtusatus, Torr. in Bot. U.S. & Mex. Bound. Surv. p. 150, pro parte, 
nec Choisy, et excl. syn. 
New Mexico; Arizona.—NortH Mexico, Monterey (Edwards), Cerralbo ( Gregg), 
Chihuahua (Potts). Hb. Kew. 
7. Evolvulus discolor, Benth. Pl. Hartw. p. 6; A. Gr. Synop. Fl. N. Am. ii. 
p. 219. 
Evolvulus holosericeus, 8. obtusatus, Choisy in DC. Prodr. ix. p. 444. 
SoutH Mexico, Aguas Calientes (Hartweqg). Hb. Kew. 
8. Evolvulus holosericeus, H. B. K. Nov. Gen. et Sp. iii. p. 116; Choisy in DC. 
Prodr. ix. p. 444, excl. 8. obtusatus; Meissn. in FI. Bras. vii. p. 352. 
Mexico (Schiede).—Cotomsia to Boutvia and Brazit. 
9. Evolvulus mucronatus, Swartz; Griseb. Fl. Brit. W. Ind. p. 475; A. Gr. 
Synop. Fl. N. Am. i. p. 218. 
Evolvulus glabriusculus, Choisy in DC. Prodr. ix. p. 448. 
Fioripa.—Mexico, valley of Cordova (Bourgeau, 2286), Acapulco (Sinelair).— 
Southward to Peru and Braziu and in the Wrest Inpies. Hb. Kew. 
10. Evolvulus nummularius, Linn. ; Griseb. Fl. Brit. W. Ind. p. 475; Meissn. 
in Fl. Bras. vii. p. 349. 
Evolvulus veronicefolius, H. B. K. Nov. Gen. et Sp. i. p. 117, t. 215. 
SourH Mexico, Yucatan and Tabasco (Johnson) ; Guaremata (Lriedrichsthal) ; PANAMA 
(S. Hayes, 648; Seemann, 577).—Southward to Peru and Brazin and in the West 
Inpizes. Hb. Kew. 
11. Evolvulus sericeus, Swartz; Griseb. Fl. Brit. W. Ind. p. 475; A. Gr. 
Synop. ii. p. 218. 
Fiorma to Lovristana, Texas and Arizona.n—Norta# Mexico, Chihuahua (Potts), 
Monterey (Eaton & Edwards), region of San Luis Potosi, 6000 to 8000 feet (Parry & 
Palmer, 6284).—Tropical Sourn America and the West Inpizs. Hb. Kew. 
12. Evolvulus villosus, Ruiz et Pav. Fl. Peruv. iii. p. 30, t. 253. fig. d ; |Meissn. 
in FL. Bras. vii. p. 344. 
Soutn Mexico, without locality (Harwinski; Schiede & Deppe); Guatemaua, Llano de 
