Ipomoea lanifolia sp. nov. (Convolvulaceae), a new species endemic to the Ibiapaba plateau in northeastern Brazil

Abstract

A new species of Ipomoea, thus far endemic to Caatinga domain, is described. The species occurs in a “carrasco” physiognomy - a shrubby vegetation on sandy soils characterized by the presence of cacti and bromeliads. The new species can be recognized by a combination of morphological characters, including a leaf blade with a lanate abaxial surface with long hairs, and sepals lanceolate, acuminate, tomentose, and smooth. A complete description, diagnosis, an identification key for Ipomoea species from the Ibiapaba plateau, illustrations, conservation assessments, a distribution map, and taxonomic comments are provided.

Key words Brazil; Convolvulaceae; Ipomoea; taxonomy; threatened species