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A New Species Of Cyclanthera (Cucurbitaceae, Sicyeae) From Southern South America Darwiniana
Lima,Luís F. P; Pozner,Raúl.
We describe and illustrate Cyclanthera oligoechinata (Cucurbitaceae, Sicyeae) a new species from southern Brazil (Paraná), northeastern Argentina (Misiones), and central and southern Paraguay (San Pedro). This new species resembles C. hystrix, C. eichleri and C. quinquelobata, but differs by its almost smooth fruits, and pistillate flowers and fruits on long, slender pedicels. A key to distinguish C. oligoechinata from the closest species is also included.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucurbitaceae; Cyclanthera; South America; Taxonomy.
Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932008000200010
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Alfredo Elio Cocucci 1926 - 2015 Boletín de la Sociedad
Pozner,Raúl.
Tipo: Info:eu-repo/semantics/report
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722015000300013
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Micromorphological characters supporting the removal of Senecio series Otopteri from Senecio (Asteraceae, Senecioneae) Darwiniana
Riva,Adriana; Pozner,Raúl; Freire,Susana E.
Recent molecular studies suggest that Senecio otites belonging to Senecio sect. Senecio ser. Otopteri should be removed from Senecio so that this large and taxonomically complicated genus would be monophyletic. In order to evaluate the taxonomic position of Senecio otites and the placement of series Otopteri, 13 species belonging to Senecio sect. Senecio ser. Otopteri, including S. otites, were examined for micromorphological characters of the style branches (stigmatic surface, stylearm apices) and anthers (filament collar, anther bases, anther appendages). Three states of these micromorphological characters were present in nearly all species of Senecio sect. Senecio ser. Otopteri: 1) the style-arms are apically convex or subconvex, papillate, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asteraceae; Compositae; Micro-morphology; Section Otites; Senecio; Series Otopteri; South America.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932009000200011
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Revision of the genus Nastanthus (Calyceraceae) Gayana Botánica
Zavala-Gallo,Lucio; Denham,Silvia; Pozner,Raúl.
The nomenclatural revision of 51 names previously published, combined or synonymyzed under the genus Nastanthus (Calyceraceae) is presented. Six species are recognized with correct names and new synonyms established. The nomenclature of Nastanthus ventosus, Nastanthus scapigerus and Nastanthus compactus is updated, giving a total of 45 synonyms. Lectotypes for Boopis caespitosa, Boopis scapigera, Boopis spathulata, Nastanthus laciniatus, Boopis araucana, Calycera ventosa, Nastanthus pinnatifidus and Boopis breviflora are here designated. A map with the geographic distributions, complete species descriptions, corrected illustrations, and a new key to accepted species of Nastanthus, are included.
Tipo: Journal article Palavras-chave: Calyceraceae; Nastanthus; Taxonomy.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432010000200002
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Sinopsis del género apodanthera (cucurbitaceae, coniandreae) Darwiniana
Belgrano,Manuel J.; Pozner,Raúl.
Tipo: Info:eu-repo/semantics/article
Ano: 2017 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0011-67932017000100001
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