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dc.contributor.author
Salomón, Luciana
dc.contributor.author
Hernández, Marcelo Paulo
dc.contributor.author
Giugliano, Daniel Alejandro
dc.contributor.author
Freire, Susana Edith
dc.date.available
2018-05-04T21:21:51Z
dc.date.issued
2016-01
dc.identifier.citation
Salomón, Luciana; Hernández, Marcelo Paulo; Giugliano, Daniel Alejandro; Freire, Susana Edith; Floral Microcharacters in South American species of Senecio s.str. (Asteraceae) with considerations on the circumscription of this genus; Magnolia Press; Phytotaxa; 244; 1; 1-2016; 1-25
dc.identifier.issn
1179-3155
dc.identifier.uri
http://hdl.handle.net/11336/44241
dc.description.abstract
Senecio L. s.str. is the largest genus in the tribe Senecioneae (Asteraceae) and it has been commonly characterized by its truncate, penicillate stylar tips, separated stigmatic lines, and stamens usually with ecaudate anther bases and balusterform filament collar. A micromorphological study was carried out to determine if South American species of Senecio s.str. present these diagnostic micromorphological characters, as a contribution towards a circumscription of this genus supported by morphology. The study included 72 South American Senecio species from eight sections and 16 series, as well as species from six other genera of subtribe Senecioninae (Delairea, Dendrophorbium, Dendrosenecio, Graphistylis, Lomanthus, Pentacalia), three genera of subtribe Tussilagininae (Aequatorium, Nordenstamia, Roldana), and one of subtribe Brachyglottidinae (Acrisione). The studied characters include: style branches (stigmatic surface, and apices), anthers (filament collar, bases, and appendages), as well as pollen features (shape, size, and sculpture). Analyses of these characters suggested that Senecio s.str. can be defined only by the presence of balusterform filament collars, which are present in 61 out of the 72 studied Senecio s.str. species (vs. cylindrical collar in remaining species). The genera Graphistylis and Delairea also show this trait, however, Graphistylis presents some microcharacters (e.g. “banded” stigmatic surface) that are rather infrequently found in Senecio s.str. Senecio grandis showed cylindrical collars and sagittate anther bases and should be excluded from the genus. The other microcharacters analyzed appeared to be taxonomically uninformative, since their predominant states were found in Senecio s.str. as well as in other genera of Senecioneae.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Magnolia Press
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Acrisione
dc.subject
Aequatorium
dc.subject
Anthers
dc.subject
Delairea
dc.subject.classification
Otras Ciencias Biológicas
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Floral Microcharacters in South American species of Senecio s.str. (Asteraceae) with considerations on the circumscription of this genus
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-05-04T15:09:27Z
dc.identifier.eissn
1179-3163
dc.journal.volume
244
dc.journal.number
1
dc.journal.pagination
1-25
dc.journal.pais
Nueva Zelanda
dc.journal.ciudad
Auckland
dc.description.fil
Fil: Salomón, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina
dc.description.fil
Fil: Hernández, Marcelo Paulo. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina
dc.description.fil
Fil: Giugliano, Daniel Alejandro. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina
dc.description.fil
Fil: Freire, Susana Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica Darwinion. Academia Nacional de Ciencias Exactas, Físicas y Naturales. Instituto de Botánica Darwinion; Argentina
dc.journal.title
Phytotaxa
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://biotaxa.org/Phytotaxa/article/view/phytotaxa.244.1.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.11646/phytotaxa.244.1.1


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