Two new species of Lessingianthus (Vernonieae, Asteraceae) from the Brazilian highlands.

DEMATTEIS, M.

BOTANICAL JOURNAL OF THE LINNEAN SOCIETY

Blackwell

Lugar: London; Año: 2006 vol. 150 p. 487 - 493

0024-4074

Two additional species of Lessingianthus, L. bakerianus and L. lanuginosus from the campo cerrado vegetation of central Brazil are described and illustrated. The first species is characterized by the presence of capitula arranged in groups, 9-12 florets per head, leaves sessile, oblong to ovate leaf blades with the lower surface densely lanate, sparsely villous on the main veins. It has certain resemblance to L. syncephalus (Sch. Bip. ex Baker) H. Rob. and L. brevipetiolatus (Sch. Bip. ex Baker) H. Rob., which present petiolate leaves and leaf blades lanceolate, cuneate or attenuate at the base. Lessingianthus lanuginosus is superficially similar to L. buddleiifolius (Mart. ex DC.) H. Rob., but differs in having smooth stems, woolly indumentum, smaller heads and the largest leaves disposed at the middle of the stem.