HOUSE, THE GENUS IPO MCE A 
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108. Ipomsea leptotoma Torr. Bot. Mex. Bound. 150. 1859.— A. 
Gray, Syn. FI. N. Am. 2 1 : 214. 1878. 
Ipomoea radiatifolia Kellogg, Proc. Cal. Acad. I. 7: 163. 1877. 
Pharbitis leptotoma Peter, in Engl. & Prantl. Nat. Pflanzenfam. IV. 3a: 32. 1891. 
Type locality: Near Santa Cruz Valley, Sonora, Mexico. 
Distribution: Arid mountain regions of southern New Mexico, Ari¬ 
zona and south to Oaxaca. 
Specimens examined: New Mexico; Wright 1614, 1851 (G, C); Ari¬ 
zona; Dr. Smart 405, 1867 (C); Lemmon 3039, 1883 (G, N, Y); Pringle, 
1884 (Y); Wilcox 417, 1894 (N); Tourney 179, 1892. Lemmon 90, 1880 
(G). Sonora; Thurber 977, 1851 (type — G); Palmer 25, 1869 (G, N); 
Schott, 1855 (C); Lumholtz 195, 1880 (Y); Palmer 1705, 1891 (N, Y); 
C. V. Hartman 195, 1890 (G); C. E. Lloyd 431, 1890 (G); Sinaloa; Gold¬ 
man 250, 1898 (N); Oaxaca; L. C. Smith 242, 1894 (G); Conzatti & Gon¬ 
zalez 792, 1897 (G); Puebla, E. W. Nelson 1995, 1894 (N). 
109. Ipomoea divergens House, Muhlenbergia 3: 40. 1907. 
Closely related to I. leptotoma; leaf-segments broader, sinuately toothed or lobed, 
obtuse; sepals acuminate, glabrous. 
Type locality: Guaymas, Sonora, Mexico. 
Distribution: Western Mexico. 
Specimens examined: Palmer 231, 1887 (type — N, G). 
110. Ipomoea pedatisecta Mart. & Gal. Bull. Acad. Brux. XII. 2: 
265. 1845.— Walp. Rep. 6: 535. 1847. 
Type locality: Near Oaxaca, Mexico. 
Distribution; Canons and barrancas, western and southern Mexico. 
Specimens examined: Colima; Acapulco, Palmer 234, 1894-5 (G, C); 
Jalisco; barranca of Tequila, Pringle 4469, 1893. Morelos; Rose & Painter 
6586, 1903; Rose, Painter & Rose 8550, 8569, 1905. Guerrero; La Lagun- 
illa, E. W. Nelson, 1903 (N); Iguala, Rose, Painter & Rose 9293, 9341, 
1905. Puebla; Tehuacan, Rose, Painter & Rose 9904, 1905. Oaxaca; 
Tecomavara, Seler 1339b, 1895 (G); Domingiullo, E. W. Nelson 1597, 
1894 (N); Oaxaca, Conzatti & Gonzalez 1064, 1900 (G). 
111. Ipomoea valida House, Muhlenbergia 3: 40. pi. 1. /. d. 1907. 
Type locality: Manzanillo, Mexico. 
Distribution: Thickets, Colima, Mexico. 
Specimens examined: Palmer 1031, 1890 (type — N). 
