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dc.contributor.authorOriani, Aline [UNESP]
dc.contributor.authorScatena, Vera Lucia [UNESP]
dc.contributor.authorSano, Paulo Takeo
dc.identifier.citationFlora. Jena: Elsevier Gmbh, Urban & Fischer Verlag, v. 203, n. 4, p. 341-349, 2008.
dc.description.abstractActinocephalus exhibits perhaps more diversity in habit than any other genus of Eriocaulaceae. This variation is largely a result of differences in the arrangement of the paraclades. Based on the analysis of stem architecture of all 25 species of Actinocephalus, the following patterns were established: (1) leaf rosette, with no elongated axis, instead the axillary paraclades originating directly from the short aerial stem, (2) rosette axis continuing into an elongated axis with spirally arranged paraclades, (3) an elongated axis originating from a rhizome, with ramified paraclades, and (4) an elongated axis originating from a short aerial stem, with paraclades arranged in a subwhorl. The elongated axis exhibits indeterminate growth only in pattern 4. Patterns 3 and 4 are found exclusively in Actinocephalus; pattern I occurs in many other genera of Eriocaulaceae, while pattern 2 is also found in Syngonanthus and Paepalanthus. Anatomically, each stem structure (i.e., paraclade, elongated axis, short aerial stem, rhizome) is thickened in a distinctive way and this can be used to distinguish them. Specifically, elongated axes and paraclades lack thickening, thickening of short aerial stems results from the primary thickening meristem and/or the secondary thickening meristem. Thickening of rhizomes results from the activity of the primary thickening meristem. (c) 2008 Elsevier GmbH. All rights reserved.en
dc.publisherElsevier Gmbh, Urban & Fischer Verlag
dc.sourceWeb of Science
dc.subjectmorphological architectureen
dc.subjectprimary thickening meristemen
dc.subjectsecondary thickening meristemen
dc.titleMorphological architecture of Actinocephalus (Koern.) sano (Eriocaulaceae-Poales)en
dcterms.rightsHolderElsevier Gmbh, Urban & Fischer Verlag
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.description.affiliationUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Biociencias, Dept Bot, BR-05422970 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Rio Claro, SP, Brazil
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Rio Claropt
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