A NEW VARIETY OF IPOMOEA COSTELLATA (CONVOLVULACEAE) FROM THE EDWARDS PLATEAU REGION OF TEXAS

Ipomoea costellata var. edwardsensis, var. nov., is described, illustrated, and mapped. It apparently is endemic to the Edwards Plateau region of Texas, where it is known from six counties. It is set apart from I. costellata elsewhere in its range by its combination of shorter peduncles and bright white, nearly rotate flowers with fewer and deeper lobes. Se describe, se ilustra y se cartografía lpomoea costellata var. edwardsensis, var. nov. Es aparentemente endémica de la región de la meseta Edwards de Texas, de donde se conoce de seis condados. Se separa de I. costellata por su combinación de pedúnculos más cortos y flores blanco brillante, casi rodadas con menos lóbulos y más profundos.