DIASTATEA Scheidw. subg. DIASTATEA

Middle and upper cauline leaves ovate to lanceolate and sometimes narrowly elliptic, glabrous to pubescent. Corolla tube cylindric, without gibbous projection at base.

Distribution —The species within this subgenus are found in the following Mexican states and Central and South American countries: Chiapas, Colima, Durango, Guanajuato, Guerrero, Hidalgo, Jalisco, Mexico, Michoacan, Morelos, Nuevo Leon, Oaxaca, Puebla, and within the Distrito Federal; Costa Rica, El Salvador, Guatemala, Honduras, and Panama; Argentina, Bolivia, Colombia, Ecuador, Peru, and Venezuela.