Eugenia nordestina (Myrteae, Myrtaceae), a new endemic species from the Septentrional Northeast of Brazil

Here we describe Eugenia nordestina (Myrtaceae), a new species endemic from northeastern Brazil; it was registered predominantly in stepic-savanna vegetation (???Caatinga???) from the states of Cear?? and Piaui, frequently associated with the sedimentary basin of Ibiapaba Complex. The new species is morphologically close to E. dysenterica, differing by the bark longitudinally cleft with a stiff-exfoliating periderm (vs. bark cleft in both orientations, with a very thick and non-exfoliating periderm), bracteoles 4,5???6 mm long (vs. 0.9???3.2 mm), calyx lobes 5???6.5 mm long (vs. 3.1???4.3 mm long), petals without glandular dots (vs. with sparse glandular dots) and fruits 1.3???2.3 ?? 1???2 cm (vs. 1.8???3 ?? 2.5???3.5 cm). A distribution map and field photographs are also provided.