200 ANNALS NEW YORK ACADEMY OF SCIENCES 



Type locality: Mexico. 



Distribution: Western Texas to Arizona, Central America and prob- 

 ably in South America. 



Illustrations: Dill. Elth. pi. 83. f. 96. Jacq. f. Eclog. 1: pi. U- 

 Hook. Bot. Mag. pi. 4289. Bot. Reg. pi. 1988. 



Specimens examined from Texas, New Mexico, Arizona; Sonora, 

 Jalisco, Chihuahua, Durango, Valley of Mexico, Aguas Calientes, Quere- 

 taro, Oaxaca, Mechoacan and Guatemala. 



34. Ipomoea jamaicensis (Spreng.) G. Don, Gen. Syst. 4: 278. 1838. 



— Meissn. in Mart. Fl. Bras. 7: 225. 1869. 



Convolvulus folio lanato, etc. Sloan. Jam. 55. — Hist. 1: 154. 



Convolvulus tomentosus L. Sp. PI. 156. 1753. 



fC. roseus Mill. Diet. No. 18. 1768. 



C. jamaicensis Spreng. Syst. 1: 595. 1825. Not C. jamaicensis Jacq. 1768. 



Pharbitis tomentosa Choisy, in DC. Prodr. 9: 342. 1845. 



Pharbitis jamaicensis Gib. Enum. PI. Montev. 28. 1873. 



Ipomcea tomentosa Urb. Sym. Ant. 3: 344. 1902. Not /. tomentosa Choisy, 1845. 



Type locality: Jamaica. 



Distribution: Jamaica to tropical South America. 



Illustrations: Sloan. Hist. pi. 98. f. 2. Pluk. Aim. pi. 167. f. 4. 

 Meissn. in Mart. Fl. Bras. 7: pi. 77. 



Specimens examined: Jamaica: Great Goat Isl., Harris 9212, 1906 

 (Y). 



35. Ipomoea mutabilis Lindl. Bot. Reg. 1: 39. 1815. 



Convolvulus mutabilis Spreng. Syst. 1: 593. 1825. Not C. mutabilis Salisb. 1797. 

 Pharbitis mutabilis Boj. Hort. Maurit. 227. 1837. 



Pharbitis dealbata Mart. & Gal. in Bull. Acad. Brux. XII. 2: 272. 1845. 

 Ipomoea dealbata Hemsley, Biol. Cent.-Am. Bot. 2: 386. 1882. 

 Ipomoea Learii Meissn. in Mart. Fl. Bras. 7: 224. 1869. Not /. Learii Paxton, 

 1839. 



Stems densely and softly pubescent; leaf-blades orbicular-ovate, entire or 3- 

 lobed, 6-15 cm. long, appressed-pubescent above, silvery-canescent beneath; sepals 

 linear-lanceolate, 10-15 mm. long, appressed silky-pilose; corolla 7-8 cm. long, 

 blue with a white tube. 



Type locality: Near Vera Cruz, Mexico. 



Distribution: Wooded slopes and mountain forests, Tamaulipas to 

 Vera Cruz, Orizaba and Oaxaca to Brazil. 



