STANDLEY TREES AND SHRUBS OF MEXICO. 1207 



Large woody vine ; leaves ovate or elliptic, 5 to 10 cm. long, glabrate above, 

 sericeous beneath, acute or acuminate, obtuse or rounded at base; racemes 

 many-flowered; sepals 4 to 6 mm. long, obtuse; corolla 4.5 cm. long, purplish, 

 sericeous. 



16. Ipomoea crinita T. S. Brandeg. Zoe 5: 216. 1905. 

 Type from CuliacSn, Sinaloa. 



Stems woody below, hirsute ; leaves 3-lobate ; peduncles longer than the 

 leaves, several-flowered ; sepals 7 mm. long ; corolla white, about 6.5 cm. long. 



17. Ipomoea praecana House, Ann. N. Y. Acad. Sci. 18: 227. 1908. 

 Morelos and Oaxaca ; type from Reyes, Oaxaca. Guatemala. 



Large woody vine, the young branches white-tomentose ; leaves suborbicular, 

 8 to 22 cm. long, subcordate at base, tomentose beneath ; peduncles short, 

 3 to 5-flowered ; corolla white, 6 to 9 cm. long. 



18. Ipomoea carnea Jacq. Enum. PI. Carib. 13. 1760. 



Yucatan. West Indies ; Central and South America ; type from Cartagena, 

 Colombia. 



Stout woody vine ; leaves rounded-cordate, obtuse or acute, densely pubescent 

 beneath ; peduncles short, few or many-flowered ; corolla about 8 cm. long. 



19. Ipomoea populina House, Ann. N. Y. Acad. Sci. 18: 226. 1908. 

 Guerrero ; type from Acapulco. 



Stems woody, glabrous ; leaves ovate-cordate, 5 to 8 cm. long, acuminate, 

 glabrous ; peduncles elongate, several-flowered ; corolla white, tinged below 

 with magenta, 6 cm. long. 



20. Ipomoea scopulorum T. S. Brandeg. Zoe 5: 169. 1903. 



Baja California and Sinaloa ; type from Cape Region of Baja California. 

 Stems suffrutescent below ; leaves ovate-cordate, 6 to 7 cm. long, acute, 

 pubescent ; peduncles 1 to few-flowered ; corolla white, 6 to 8 cm. long. 



21. Ipomoea purpusi House, Ann. N. Y. Acad. Sci. 18: 248. 1908. 

 Type from Zacuapan, Veracruz. 



Leaves broadly ovate-cordate, deeply trilobate, 5 to 8 cm. long, densely ap- 

 pressed-hirsute ; peduncles elongate, 1 to 5-flowered ; corolla about 3 cm. long. 



22. Ipomoea jicama T. S. Brandeg. Bull. Calif. Acad. II. 2: 188. 1889. 

 Baja California. 



Glabrous vine with slender woody stems ; leaves broadly cordate-ovate, small, 

 acute or acuminate, entire or dentate ; corolla 5 to 6 cm. long. " Jicama." 



23. Ipomoea sagittula House, Ann. N. Y. Acad. Sci. 18: 244. 1908. 

 Type collected between San Sebastian and* Las Palmas, Jalisco. 

 Slender woody vine, glabrous or nearly so ; leaves oblong-sagittate, 4 to 7 



cm. long, acute or acuminate, mucronate ; peduncles slender, 1 to 5-flowered ; 

 corolla white, about 3 cm. long. 



24. Ipomoea viilsa House, Muhlenbergia 3: 45. pi. 1, f. A, b. 1907. 

 Type from Orizaba, Veracruz. 



Glabrous vine ; leaves with oblong or obovate-lanceolate, obtuse lobes ; pe- 

 duncles elongate, 1 or 2-flowered ; corolla purplish, 3 to 4 cm. long. 



25. Ipomoea lindenii Mart. & Gal. Bull. Acad. Brux. 12^ 264. 1845. 

 Type from Zacuapan, Veracruz. 



Glabrous woody vine ; leaves ovate, 5 to 10 cm. long, acuminate, shallowly 

 cordate at base ; peduncles short, 1 to 3-flowered ; corolla 3 to 5 cm. long. 



