500 House : North American Convolvulaceae 



volvulus gossypiifolius Sp 

 Linnaea 6 : 742. 183 1. 



1825. — Schlecht. 



Convolvulus tuberosus Spreng. Lc. Not C. tuberosus Veil. 

 Ipo 



213 



1874; excl. syn. Steud. 



jp 



3a 



31. I89I. 



J 



Distribution : Cuba, Jamaica, St. Domingo and other West 



Indian islands, Central America, tropical South America and the 



old world. 



Illustrations : Sloane, Jam. 1 : pi. 96. f. 2. Bot. Reg. pL j68 



(white flowers probably an error). 



10. Operculina dissecta (Jacq.) 



* 



Convolvulus dissectus Jacq. Obs. 2: 4. 1767. — L. Mant. 204. 



1771. 

 Ipomoea sinuata Ortega, Hort. Matr. Dec. 84. 1798. 

 Ipomoea dissecta Pursh, Fl. Am. Sept. 145. 1814. Not /. dis- 



* 



secta Willd. 1794, nor /. dissecta R. Br. 1810. 

 Ipomoea subpedata Desf. Cat. Hort. Par. ed. 3. 397. 1829. 

 Ipomoea nigricans Gardn. Lond. Jour. Bot. I : 180. 1842. 

 Merremia dissecta Hallier f. Bot. Jahrb. 18 : 114. 1894. 



Type locality : America. 



Distribution : Florida and Texas ; Mexico, West Indies and 

 tropical South America. 



Illustrations: Jacq. Obs. 2: pL 28 ; Hort. Vindob. pL ijp. 



11. Operculina Roseana sp. nov. 



Low, extensively twining among bushes, 1-3 m. long, glabrous : 

 leaf-blades ovate in outline, 4-7 cm. long, pinnately parted into 5 



*The Ipomoea dissecta Willd. and R. Br. of the old world has often been con- 

 fused with the American plant both on account of the homonymous name and their 

 strong relationship. It cannot be consistently kept in a different genus but belongs 

 to Spirantktra of Bojer, which is not separable from Operculina by any constant 



character. 



Operculina coptica (L. ) 



Convolvulus c opticus L. Mant. 559. 1 771. 



Ipomoea dissecta Willd. Phyt. 5. //. 2. /. j. 1794. — Sp. PI. 1 : 880. 1798. — R. 

 Br. Prodr. 487. 1810. 



Ipomoea coptica Roth, Nov. PI. Sp. no. 1821. — Choisy, in DC. Prodr. 9: 384. 



1845. 

 Tropical Africa, Asia, East Indies, and Australasia. 



