602 House: North American Convolvulaceae 



7- Q 



Syst. 4: 259. 1838 



Calboa vitifolia Cav. Ic. 5 • 5 ^ • ^ 799* 

 Macrostcinuia vitifolia Pers. Syn. i : 185. 1805. 



Convohmhis Ncei Spreng. Syst. i : 593. 1825. 

 Tponioca pediuuularis Berto], Fl. Guatem. 8, 1 840. 

 Exogonium umhellatiim Moc. & Sesse ; Choisy, in DC. Prodr. 9 : 

 336, 1845. 



Perennial, twining, glabrous : leaf-blades ovate, 8-1 5 cm. long^ 

 cordate or cordate-sagittate, entire or usually 3-lobed, lobes ovate 

 ' or oblong-lanceolate, acuminate, the middle lobe constricted below; 

 petioles usually longer than the blades : peduncles exceeding the 

 subtending leaves, 25-40 cm. long, 3-many-flowered : sepals ovate 

 or suborbicular, 4-5 mm. long, the infraterminal awns as long : 

 corolla 3.5-4 cm. long, the tube cylindrical, yellowish, slender, 

 somewhat expanded toward the top, the limb scarlet, 2-2.5 ^"^- 

 broad, deeply 5-lobed, the lobes lanceolate or oblong-lanceolate, 

 acute, the exserted stamens elongated and declinate. 



Type locality : Near Santa Bias, Mexico. 



F 



Distribution : Southern Mexico and Central America. 



Illustrations : Cav. Ic. 5 : //. 4^6. — Bertol. loc. cit. pi. 2. 



Specimens examined : Tres Marias Islands : Maria Madre,. 

 Nelson ^/, ^-Pjj, ^897. Sinaloa : Esquinapa, Lamb ^01^ 1895. 

 Michoacan : near Los Reyes, E. W. Nelson 68jo, 1903. Guer- 

 rero: Sierra Madre, Langlasse 810, 1899. Guatemala: Santa 



5a, Heyde 

 W. Nelson 



Rodes and Malacate^ 



8. Quamoclit 



Mina 

 Quan 



1824. 



259. 1838. 



Ipomoca versicolor Melssn. in Mart. Fl. Bras. 7: 220. 1869. 



Perennial, slender and twining, herbaceous above : leaf-bladcs 

 ovate, deeply cordate, deeply 3-lobed, the middle lobe constricted 

 below, the lateral lobes often again lobed : peduncles much longer 

 than the subtending leaves, 30-40 cm. long, dichotomously 

 several-flowered, the flowers somewhat secund on the two main 

 branches of the inflorescence; sepals equal, 3-4 mm. long, the 



rved 



carlet 



5 



