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Lessingianthus (Vernonieae-Asteraceae): generic and infrageneric relationships based on pollen morphology

2010; Wiley; Volume: 28; Issue: 3 Linguagem: Inglês

10.1111/j.1756-1051.2010.00457.x

1756-1051

Cláudia Barbieri Ferreira Mendonça, Tatiana Tavares Carrijo, Roberto Lourenço Esteves, Vania Gonçalves‐Esteves,

Natural product bioactivities and synthesis

Nordic Journal of BotanyVolume 28, Issue 3 p. 376-384 Lessingianthus (Vernonieae–Asteraceae): generic and infrageneric relationships based on pollen morphology Cláudia Barbieri Ferreira Mendonça, Cláudia Barbieri Ferreira MendonçaSearch for more papers by this authorTatiana Tavares Carrijo, Tatiana Tavares CarrijoSearch for more papers by this authorRoberto Lourenço Esteves, Roberto Lourenço EstevesSearch for more papers by this authorVania Gonçalves-Esteves, Vania Gonçalves-EstevesSearch for more papers by this author Cláudia Barbieri Ferreira Mendonça, Cláudia Barbieri Ferreira MendonçaSearch for more papers by this authorTatiana Tavares Carrijo, Tatiana Tavares CarrijoSearch for more papers by this authorRoberto Lourenço Esteves, Roberto Lourenço EstevesSearch for more papers by this authorVania Gonçalves-Esteves, Vania Gonçalves-EstevesSearch for more papers by this author First published: 24 May 2010 https://doi.org/10.1111/j.1756-1051.2010.00457.xCitations: 9 C. B. F. Mendonça ([email protected]), and V. Gonçalves-Esteves, Museu Nacional, Quinta da Boa Vista, 20940-040, Rio de Janeiro, RJ, Brazil. – T. T. Carrijo, Escola Nacional de Botânica Tropical, Inst. de Pesquisas Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 915, 22460 030, Rio de Janeiro, RJ, Brazil. – R. L. Esteves, Univ. do Estado do Rio de Janeiro, Inst. de Biologia, IBRAG/DBV, Rua São Francisco Xavier 524, 20550-013, Rio de Janeiro, RJ, Brazil. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract Pollen morphology of 31 species of Lessingianthus was investigated in order to evaluate the generic and infrageneric relationships of Lessingianthus and related genera. Acetolyzed pollen grains were measured, described and illustrated using light microscopy. Non-acetolyzed pollen grains were investigated using scanning electron microscopy. Pollen grains of Lessingianthus are isopolar monads, suboblate, oblate spheroidal or prolate spheroidal, lophate (30, 29 and 27 lacunae), with small or large polar area, tricolporate. Pollen grains with 30 lacunae occur in the majority of the species examined, and show three apertural, six abapertural, twelve parapertural, six interapertural and three equatorial lacunae. Pollen grains with 29 lacunae occur in L. desertorum, L. simplex and L. virgulatus and are characterized by three apertural, six abapertural, twelve parapertural, six interapertural and two polar lacunae, and by absence of equatorial lacunae. Pollen grains with 27 lacunae occur in L. adenophyllus and L. durus and are characterized by three apertural, six abapertural, twelve parapertural and six interapertural lacunae, but lack polar and equatorial lacunae. Species of Lessingianthus subgen. Lessingianthus, with few exceptions, have pollen grains with type B lophate pattern, which differs mostly in shape. Pollen grains of Lessingianthus subgenus Oligocephalus share a very similar pattern of 29 lacunae with those of Chrysolaena, supporting recently proposed taxonomic changes. Pollen grains with 27 regular lacunae occur in Lessingianthus durus and L. adenophyllus, but the first differ from the latter by having cross muri enclosing the apertural lacuna (type G pollen). Citing Literature Volume28, Issue3June 2010Pages 376-384 RelatedInformation