House : North American Convolvulaceae 497 



Stems not winged. 



Corolla yellow ; sepals 3 cm. long or longer ; capsule 3- 



4 cm. in diameter. 9 . o. tuberosa. 



Corolla white or whitish ; sepals smaller; capsules 1-2 



cm. in diameter. 



Leaves pinnately lobed or, if palmately lobed, not 



cut to the petiole. 

 Leaves palmately lobed, the segments much 



toothed or cut ; petioles and stem hispid. 10. O. dissecta. 

 Leaves pinnately lobed ; plant glabrous. 



Lobes lanceolate or broader, with undulate 



margins. 1 1. 0. Roseana. 



Lobes linear, margins entire. 12. 0. angusiiloba. 



Leaves palmately lobed to the petiole. 

 Plant glabrous. 



Leaflets lanceolate, acuminate. 13. 0. Palmeri. 



Leaflets elliptical-oblong, obtuse. 14. 0. platyphylla. 



Sepals and stems hispid. 15. O. aegyptia. 



I. Operculina alata (Ham.) Urban, Symb. Ant. 3: 343. 1902. 

 Convolvulus alatus Ham. Prodr. Fl. Ind. Occ. 24. 1824. 



Ipomoea Hamit 

 Ipomoea pterodi 



1838. 



1845. — Griseb. 



W. Ind. 467. 1 861. 



IP 



Choisy, /. c. 359. 



Operculum pterodes and 0. altissima Meissn. in Mart. Fl. Bras. 7: 



313. 1869. 

 Ipomoea alidata Miquel, Linnaea 18: 599. 1844. 

 Operculina populifolia Hallier f. Bot. Jahrb. 16 : 550. 1893. 



(Ex spec. Wright no. j 083.) 



Type locality : Near Scarborough, Tobago. 



Distribution : Cuba and the Lesser Antilles, northern coast of 

 South America and adjacent islands. 



Illustrations : Mart. Fl. Bras. 7 : //. 75. 



2. Operculina triquetra (Vahl) Hallier f. Bot. Jahrb. 18 : 120. 



1894 



Convolvulus triquetra Vahl, Symb. 3: 30. 1794- — Schlecht. 



Linnaea 6 : 738. 183 1. 

 Ipomoea triquetra Roem. & Schultz, Syst. 4: 231. 18 19. 



Choisy, in DC. Prodr. 9: $60. 1845, excl. syn. Ham. & G. 



Don. 



