Additions to the genus <i>Lessingianthus</i> (Asteraceae, Vernonieae) from South America

Dematteis, Massimiliano; Angulo, María Betiana

doi:10.1590/2175-7860201061207

Abstract

Two new species of Lessingianthus (Asteraceae: Vernonieae) are described and illustrated. One of these, L. foliosus Dematt., bears a resemblance to L. vepretorum, but can be separated from it by its linear leaves, that are lanate on the abaxial surface, and by its shorter internodes. The other new species, L. lapinhensis Dematt., can be easily separated from L. brevifolius and other taxa of the genus by the combination of stems 8-18 cm tall, glabrous linear leaves and campanulate involucres. Thirteen other taxa previously described as Vernonia are transferred to the genus Lessingianthus and two lectotypes are designated here.

Key words:
Compositae; new combinations; new species; Vernonia

Resumo

Duas novas espécies de Lessingianthus (Asteraceae: Vernonieae) são descritas e ilustradas. Uma dessas espécies, L. foliosus Dematt., apresenta semelhança com L. vepretorum, mas diferencia-se dela pelas folhas lineares, lanosas na face abaxial e pelos entrenós mais curtos. A outra espécie, L. lapinhensis Dematt., pode ser distinguida facilmente de L. brevifolius e outros táxons do gênero pela combinação de caule 8-18 cm compr., folhas lineares, glabras e invólucro campanulado. Outros treze táxons descritos como Vernonia são transferidos para o gênero Lessingianthus e dois lectótipos são aqui designados.

Palavras-chave:
Compositae; novas combinações; novas espécies; Vernonia

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References

Bentham, G. & Hooker, J.D. 1873. Vernonieae. Genera plantarum. Reeve & Co., London. Vol. 2, pars. 1. Pp. 227-231.
Bremer, K. 1994. Asteraceae. Cladistics and classification. Timber Press, Portland. Pp: 1-752
Brummit, R.K & Powell, C.E. 1992. Authors of plant names. Royal Botanic Gardens, Kew. 732p.
Dematteis, M. 2002. Cytotaxonomic analysis of South American species of Vernonia (Vernonieae: Asteraceae). Botanical Journal of the Linnean Society 139: 401-408.
Dematteis, M. 2004. Taxonomía del complejo Vernonia rubricaulis (Vernonieae, Asteraceae). Bonplandia (Corrientes) 13: 5-13.
Dematteis, M. 2007. Taxonomic notes on the genus Chrysolaena(Vernonieae, Asteraceae), including a new species endemic to Paraguay. Annales Botanici Fennici 44: 56-64.
Dematteis, M. & Pire, S.M. 2008. Pollen morphology of some species of Vernonia sensu lato (Vernonieae, Asteraceae) from Argentina and Paraguay. Grana 47: 117-129.
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Keeley, S.C. & Jones, S.B. 1979. Distribution of the pollen types in Vernonia (Vernonieae: Asteraceae). Systematic Botany 4: 195-202.
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Publication Dates

Publication in this collection
Apr-Jun 2010

History

Received
14 Sept 2009
Accepted
10 Mar 2010

This is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

[1] Bentham, G. & Hooker, J.D. 1873. Vernonieae. Genera plantarum. Reeve & Co., London. Vol. 2, pars. 1. Pp. 227-231.

[2] Bremer, K. 1994. Asteraceae. Cladistics and classification. Timber Press, Portland. Pp: 1-752

[3] Brummit, R.K & Powell, C.E. 1992. Authors of plant names. Royal Botanic Gardens, Kew. 732p.

[4] Dematteis, M. 2002. Cytotaxonomic analysis of South American species of Vernonia (Vernonieae: Asteraceae). Botanical Journal of the Linnean Society 139: 401-408.

[5] Dematteis, M. 2004. Taxonomía del complejo Vernonia rubricaulis (Vernonieae, Asteraceae). Bonplandia (Corrientes) 13: 5-13.

[6] Dematteis, M. 2007. Taxonomic notes on the genus Chrysolaena(Vernonieae, Asteraceae), including a new species endemic to Paraguay. Annales Botanici Fennici 44: 56-64.

[7] Dematteis, M. & Pire, S.M. 2008. Pollen morphology of some species of Vernonia sensu lato (Vernonieae, Asteraceae) from Argentina and Paraguay. Grana 47: 117-129.

[8] Erdtman, G. 1966. Pollen morphology and plant taxonomy. Angiosperms. Hafner, New York. 555p.

[9] Glaziou, A.F.M. 1909-1910. Plantae Brasiliae centralis a Glaziou lectae. Liste des plantes du Brésil central recueillies en 1861-1895 par A.-F.-M.- Glaziou. Bulletin de la Sociéteé Botanique de France 56, Mémoires 3: 366-425.

[10] Holmgren, P.K.; Holmgren, N.H. & Barnett, L.C. 1990. Index Herbariorum. I. The herbaria of the world. 8th ed. Regnum Vegetabile 120: 1-693.

[11] Jones, S.B. 1982. A revision of Vernonia series Buddleiifoliae (Compositae: Vernonieae). Brittonia 34: 102-117.

[12] Keeley, S.C. & Jones, S.B. 1979. Distribution of the pollen types in Vernonia (Vernonieae: Asteraceae). Systematic Botany 4: 195-202.

[13] Lawrance, G.H.M.; Buchheim, A.F.G.; Daniels, G.S & Dolezal, H. 1968. Botanico-Periodicum-Huntianum. Hunt Botanical Library, Pittsburg. 1063p.

[14] McNeill, J. (Chairman); Barrie, F.R.; Burdet, H.M.; Demoulin, V.; Hawksworth, D.L.; Marhold, K.; Nicolson, D.H.; Prado, J.; Silva, P.C.; Skog, J.E.; Wiersema, J.H. (Members) & Turland, N.J. (Secretary). 2006. International Code of Botanical Nomenclature (Vienna Code). Regnum Vegetabile 146: i-xviii, 1-568.

[15] Oliveira-Filho A.T. & Ratter, J. A. 2002. Vegetation physiognomies and woody flora of the cerrado biome. In: Oliviera, P.S. & Marquis, R.J. (eds). The cerrados of Brazil. Columbia University Press, New York. Pp. 91-120.

[16] Prain, D. 1913. Index Kewensis, Supplementum IV (1906-1910). Oxford University Press, London.

[17] Robinson, H. 1988. Studies in the Lepidaploa complex (Vernonieae: Asteraceae). IV. The new genus Lessingianthus Proceedings of the Biological Society of Washington 101: 929-951.

[18] Robinson, H. 1999. Generic and subtribal classification of American Vernonieae. Smithsonian Contributions to Botany 89: 1-116.

[19] Robinson, H. 2007. Tribe Vernonieae. In: Kadereit, J. & Jeffrey, C. (vol. eds.). The families and genera of vascular plants (K. Kubitzky, ser. ed.). Vol. 8. Asterales. Springer-Verlag, Berlin, Heidelberg, New York. Pp. 165-192.

[20] Stafleu, F.A. & Cowan, R.S. 1976-1988. Taxonomic literature. Vols. 1-7. Bohn, Scheltema & Holkema, Utrech.

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