HOUSE, THE GENUS I POM (E A 255 



i 158. Ipomoea batatas (L.) Lam. Encyc. 6: 14, 1804. — Willis, Prac. 

 Fl. 183. 1894. 



Convolvulus batatas L. Sp. PI. 154. 1753. 



Convolvulus edulis Thunb. FI. Jap. 84. 1784. 



Ipomcea catesbatei G. F. W. Mey, Prim. Fl. Esseq. 113. 1818. 



Convolvulus esculentus, batata and varius Veil. FI. Flum. 2: 73. 1827. 



Batatas edulis Choisy in Mem. Soc. Phys. Gendv. 6: 435. 1845. — In DC. Prodr. 9: 



1845. 

 Convolvulus chrysorhizus Forst.; Wien. Illustr. Gartenz. 288. 1888. 



Type locality: Asia, Africa, America (Linn.). 



Distribution : Circumtropical, chiefly as a cultivated plant. Arkansas 

 to Texas, Florida and Mexico to South America. Sweet Potato. 



Illustrations: Catesb. Car. p/. 6'0. Moris. Hist. 2: p/. 5./. 4- Rumph. 

 Amb. pi. 130. Rheed. Mai. 11: j>l. 50. Dill. Elth. p/. 80. f. 91, 92; pi. 

 81, f. 93; pi. 82, f. 94; pi. 83, f. 95, 96. Veil. Fl. Flum. 2 : pi. 55, 58, 59, 61. 



Apparently derived by cultivation from the next species and doubtfully 

 distinct from it. 



159. Ipomoea tiliacea (Willd.) Choisy in DC. Prodr. 9: 375. 1845.— 



Hallier f. Bull. Soc. Bot. Belg. 37: 95. 1898. 



? Convolvulus platanifolius Vahl, Symb. 3: 26. 1794. 



Convolvulus tiliaceus Willd. Enum. 1: 203. 1809. — Schlecht. in Linnaea 6: 739. 



1831. 

 Convolvulus fastigiatus Roxb. Hort. Beng. 13. 1814. 

 /powiosa cymosa G. F. W. Mey. Prim. Fl. Esseq. 99. 1818. 

 ? Ipomcea platanifolia Roem. & Schult. Syst. 4: 220. 1819. 

 Convolvulus essequebensis Spreng. Syst. 1: 600. 1825. 

 Ipomoea fastigiata Sweet, Hori;. Brit. 288. 1826. Choisy in DC. Prodr. 9: 380. 



1845. 

 Ipomoea hirsuticaulis C. H. Wright, Kew Bull. 162. 1896. 



Type locality: Brazil. 



Distribution: Florida Keys and West Indies, southern Mexico to 

 Bolivia, Peru and Brazil. 



160. Ipomoea leucotricha J. Donnell Smith, Bot. Gaz. 23 : 10. 1897. 



Perennial; densely silvery-pubescent or sericeous; leaf-blades orbicular, 6-10 

 cm. broad, cordate, entire, acute, sparingly pilose above, silvery beneath; peduncles 

 many-flowered, cymes 3-4 times dichotomous, corymbiform; sepals oblong-ovate, 

 6 mm. long, the awned apex recurved; corolla 5-6 cm. long, canescent in bud. 



Type locality: Newton, Guatemala. 



Distribution : Guatemala. 



Specimens examined: Newton, Nelson 3512, 1895 (type — N). 



