Lessingianthus concepcionis (Asteraceae, Vernonieae), a new octoploid species endemic to northern Paraguay

Abstract

Lessingianthus concepcionis, a new species from northern Paraguay is described and illustrated. The new species has a certain resemblance to L. niederleinii but can be easily separated by the combination of leaves with denticulate and revolute margins, tomentose beneath, involucre with 6-7 series of phyllaries, glandular trichomes on the corolla lobes, and the chromosome number 2n=8x=128.