HOUSE, THE GENUS IPOMCEA 235 



^ 108. Ipomaea leptotoma Torr. Bot. Mex. Bound. 150. 1859.— A. 

 Gray, Syn. Fl. N. Am. 2^: 214. 1878. 



Ipomaea 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; Tkurher 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. Ipomcea divergens House, Muhlenbergia 3: 40. 1907. 



Closely related to /. leptotoma; leaf-segments broader, sinuately toothed or lobed, 

 obtuse; sepals acuminate, glabrous. 



Type locality : Guaymas, Sonora, IMexico. 



Distribution: Western Mexico. 



Specimens examined: Palmer 231, 1887 (type — N, G). 



110. Ipomcea 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, PrmgrZe 4-^55, 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 lS39b, 1895 (G); Domingiullo, E. W. Nelson 1597, 

 1894 (N); Oaxaca, Conzatti & Gonzalez 1064, 1900 (G). 



111. Ipomcea valida House, Muhlenbergia 3: 40. jtl. 1. f. d. 1907. 



Type locality: Manzanillo, Mexico. 

 Distribution: Thickets, Colima, Mexico. 

 Specimens examined: Palmer 1031, 1890 (type — N). 



