House : North American Convolvulaceae 603 



mm. in diameter, almost wholly included in the calyx; the limb 

 cylindrical or flask-shaped, about 2 cm. long and i cm. in diame- 

 ter, bent, the stamens and style declinate against the upper side of 

 the limb, their tips recurved along the lower side in bud, long- 

 exserted when the limb expands, margin of limb somewhat con- 

 stricted, with 5 small, acute lobes. 



Type locality : Mexico. 



Distribution : San Luis Potosi to Central and South America. 



Illustrations : Bot Reg. //. 24. — Paxt. Bot. Mag. 14 : 



100. — Morren, Ann. Soc. Agric. Gand 5 : //. 2£g. 



Specimf:ns examined: San Luis Potosi ; Schaffner iii, j^Sj 

 1897. 



New York Botanical Garden, 



