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NEW SPECIES AND NEW COMBINATIONS IN THE SOUTH AMERICAN GENUS LESSINGIANTHUS (ASTERACEAE: VERNONIEAE)

Published online by Cambridge University Press:  01 November 2008

M. Dematteis
M. Dematteis*
Affiliation:
Instituto de Botánica del Nordeste (UNNE-CONICET), Casilla de Correo 209, 3400 Corrientes, Argentina. E-mail: dematteisar@yahoo.com.ar
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Abstract

Two new species of the South American genus Lessingianthus (Asteraceae: Vernonieae) are described and illustrated. One of these species, Lessingianthus arctatus, bears a resemblance to L. linearis (Spreng.) H.Rob. and L. rosmarinifolius (Less.) H.Rob., but can be separated from them by its almost glabrous phyllaries, solitary heads and longer internodes. The other new taxon, Lessingianthus longicuspis, can be easily separated from L. cataractarum (Hieron.) H.Rob. and L. bardanoides (Less.) H.Rob., and other taxa of the genus, by the combination of petiolate leaves, aristate phyllaries and inflorescence bracts alternate to the heads. Four other taxa previously included in Vernonia are transferred to the genus Lessingianthus.

Keywords

BrazilcerradotaxonomyVernoniaVernonieae
Type
Articles
Information
Edinburgh Journal of Botany , Volume 65 , Issue 3 , November 2008 , pp. 359 - 368
Copyright
Copyright © Trustees of the Royal Botanic Garden Edinburgh 2008

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References

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