Reestablishment and new circumscription of <i>Comanthera</i> (Eriocaulaceae)

Parra, Lara Regina; Giulietti, Ana María; Andrade, María José Gomes de; Berg, Cássio van den

doi:10.1002/tax.594013

Cited by 48 publications

(50 citation statements)

References 16 publications

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“…Martius (1935) described Philodice Mart., which is currently defined by pistillate flowers with rhombic petals, fleshy and connate in the middle, with a rigid and erect, acuminate apex, and open scape spathes (further comments on Philodice morphology was provided by Giulietti & al., 2012a). Similarities between Philodice and Syngonanthus were perceived by several authors (e.g., Koernicke, 1863;Ruhland, 1903) and confirmed by phylogenetic analyses (Andrade & al., 2010;Giulietti & al., 2012b;Trovó & al., 2013). Therefore, Philodice was synonymized under Syngonanthus, with the conservation of the later, more recent name (Giulietti & al., 2009(Giulietti & al., , 2012a.…”

Section: Introductionsupporting

confidence: 56%

“…Classifications of infrageneric taxa currently placed in Syngonanthus and Comanthera since Koernicke (1863), excluding Philodice, which was synonymized in Syngonanthus without sectional assignment (Giulietti & al., 2009(Giulietti & al., , 2012a The splitting of Syngonanthus and the resurrection of Comanthera was proposed on the basis of an unresolved topology within the traditional Syngonanthus s.l. (Andrade & al., 2010). In this topology, when unsupported nodes are collapsed, Syngonanthus s.l.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phylogeny and taxonomy of Syngonanthus and Comanthera (Eriocaulaceae): Evidence from expanded sampling

Echternacht

Sano

Bonillo

et al. 2014

TAXON

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Comanthera and Syngonanthus (Eriocaulaceae) are monocotyledonous herbs that occur mainly in neotropical savannas in the Guiana Shield and in southeastern Brazil, with a few species in Africa. Phylogenetic relationships in Syngonanthus and Comanthera are still unresolved and have not yet been assessed using a broad and comprehensive sampling. The present study aimed to test the monophyly of both genera and their putative infrageneric taxa and to evaluate their taxonomy and supporting synapomorphies in the light of a resolved phylogeny. The resulting phylogenetic hypotheses were then used to infer the biogeographical histories of the taxa, especially in Brazil. Molecular analyses based on plastid (trnL‐F, psbA‐trnH) and nuclear (ITS) markers using parsimony and Bayesian inference were conducted on 62 species belonging to the ingroup. Syngonanthus s.l. (composed of Syngonanthus, Philodice and Comanthera), Syngonanthus s.str. (including Philodice), Comanthera and both of its subgenera were retrieved as monophyletic, strongly supported by molecular and morphological apomorphies. However Syngonanthus sect. Carphocephalus appeared polyphyletic, and its species were embedded within a paraphyletic S. sect. Syngonanthus. Within Comanthera, clades restricted to equatorial savannas appeared to be sisters to clades restricted to southeastern Brazil, especially in the Espinhaço Range, with a disjunct pattern between Bahia and Minas Gerais states. Within Syngonanthus s.str., Andean and African species appeared embedded in Brazilian clades, but resolution and support within the genus must be improved in future research.

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Section: Introductionsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Phylogeny and taxonomy of Syngonanthus and Comanthera (Eriocaulaceae): Evidence from expanded sampling

Echternacht

Sano

Bonillo

et al. 2014

TAXON

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“…The family includes 11 genera and c . 1110 species (Sano, 2004; Parra et al ., 2010; Andrade et al ., 2011) and belongs to Poales (APG, 2009). The distribution is pantropical, because of the broad distribution of Eriocaulon L., but two main centres of diversity are recognized in the Neotropics: the Brazilian Espinhaço Range (where 35% of the entire family diversity occurs) and the Guyanan, Venezuelan and Brazilian tepuis (Giulietti & Hensold, 1990; Stützel, 1998; Costa, Trovó & Sano, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…The most recent phylogenetic analyses (Unwin, 2004; Andrade et al ., 2010; Trovó, 2010) recognized the monophyly of subfamilies Eriocauloideae Ruhland and Paepalanthoideae Ruhland. They also revealed the polyphyly or paraphyly of several genera, which were consequently split, synonymized or recircumscribed (Sano, 2004; Costa, 2005; Giulietti et al ., 2009; Parra et al ., 2010). Paepalanthus s.l.…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic analysis of the Brazilian microendemic Paepalanthus subgenus Xeractis (Eriocaulaceae) inferred from morphology

Echternacht

Sano

Trovó

et al. 2011

Botanical Journal of the Linnean Society

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Paepalanthus subgenus Xeractis (Eriocaulaceae) comprises 28 recognized species endemic to the Espinhaço Range, in Minas Gerais state, Brazil. Most species of the subgenus are restricted to small localities and critically endangered, but still in need of systematic study. The monophyly of the subgenus has already been tested, but only with a few species. Our study presents the first phylogenetic hypothesis within the group, based on morphology. A maximum parsimony analysis was conducted on a matrix of 30 characters for 30 terminal taxa, including all species of the subgenus and two outgroups. The biogeographical hypotheses for the subgenus were inferred based on dispersal-vicariance analysis (DIVA). The analysis provided one most-parsimonious hypothesis that supports most of the latest published subdivisions (sections and series). However, some conflicts remain concerning the position of a few species and the relationships between sections. The distribution and origin(s) of microendemism are also discussed, providing the ground for conservation strategies to be developed in the region.

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“…Paepalanthoideae comprises Rondonanthus, Paepalanthus, Syngonanthus, Comanthera, Leiothrix, Lachnocaulon, Tonina, and Actinocephalus, and is characterized by presenting isostemonous staminate flowers and nectariferous style branches in the pistillate flowers (Ruhland 1903;Herzog 1931;Sano 2004;Parra et al 2010;Andrade et al 2011;Giulietti et al 2012). Eriocauloideae comprises Eriocaulon and Mesanthemum, and its representatives have diplostemonous staminate flowers and petals with glands in both staminate and pistillate flowers (Ruhland 1903;Giulietti et al 2012).…”

Section: Introductionmentioning

confidence: 98%

Anatomical characterization of vegetative organs and scapes of Rondonanthus (Eriocaulaceae, Poales)

Oliveira

Oriani

2016

Braz. J. Bot

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Eriocaulaceae is a pantropical family and comprises ten genera. Rondonanthus is endemic to the north region of South America and comprises six species. The anatomy of roots, stem, leaves, and scapes were studied in four species to characterize the genus and to identify characteristics with taxonomic value. The following characteristics are diagnostic of Rondonanthus: roots-heterogeneous cortex with an aerenchyma supported by arm cells and vascular cylinder with a central metaxylem vessel element; stems-idioblasts with druses in the cortex and in the pith; leaves-Malpighian hairs, hypodermis in the adaxial surface, chlorenchyma with arm cells, druse idioblasts in the mesophyll, and vascular bundle sheath extensions with rounded cells; scapes-Malpighian hairs and chlorenchyma with arm cells. Rondonanthus capillaceus differed from the remaining studied species by presenting roots with a homogeneous cortex with thinwalled cells; filiform leaves without stomata and trichomes but with a chlorophyllous epidermis and a parenchymatous mesophyll and only one central vascular bundle without sheath extension. Such differences may be related to the habitat, since this species grows on river margins and requires hydrodynamic organs. The number of vascular bundles in the leaves is a useful characteristic to differentiate among species.

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Reestablishment and new circumscription of Comanthera (Eriocaulaceae)

Cited by 48 publications

References 16 publications

Phylogeny and taxonomy of Syngonanthus and Comanthera (Eriocaulaceae): Evidence from expanded sampling

Phylogeny and taxonomy of Syngonanthus and Comanthera (Eriocaulaceae): Evidence from expanded sampling

Phylogenetic analysis of the Brazilian microendemic Paepalanthus subgenus Xeractis (Eriocaulaceae) inferred from morphology

Anatomical characterization of vegetative organs and scapes of Rondonanthus (Eriocaulaceae, Poales)

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