A second ×Cyclobotrya (Dryopteridaceae) from Brazil

Schwartsburd, Pedro Bond; Canestraro, Bianca Kalinowski; Moran, Robbin C.; Prado, Jefferson; Smith, Alan Р.

doi:10.1007/s12228-017-9501-5

Cited by 6 publications

(6 citation statements)

References 14 publications

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“…The hybrid genus × Cyclobotrya was only recently introduced (Engels & Canestraro, 2017), but a second nothospecies has already been discovered (Schwartsburd et al, 2018). The two parental genera together form a derived clade in the Dryopteridaceae subfam.…”

Section: Discussionmentioning

confidence: 99%

“…The morphological similarities between these two genera have long been recognized (Smith, 1986). Moran (1987) suggested that Polybotrya originated from a Cyclodium ancestor, arguing that the holodimorphic leaves and fully scandent growth habit of Polybotrya originated from the graduation of leaf dimorphism and terrestrial to creeping to scandent growth in Cyclodium (see also Schwartsburd et al, 2018). Here, generic concepts may require further attention considering the existence of intergeneric hybrids.…”

Section: Discussionmentioning

confidence: 99%

“…(Rothfels et al, 2015) and × Lindsaeosoria W. H. Wagner (Lehtonen, 2018). Most nothogenera, however, have not been formally evaluated and new nothogenera such as × Cyclobotrya Engels & Canestraro have been introduced without phylogenetic analyses to confirm their status (Engels & Canestraro, 2017; Schwartsburd et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Evaluating the status of fern and lycophyte nothotaxa in the context of the Pteridophyte Phylogeny Group classification (PPG I)

Liu

Schuettpelz

Schneider

2020

J of Sytematics Evolution

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Hybridization has long been recognized as common in ferns, but the products of this arguably evolutionary important process have often been ignored in classifications. For example, the recently published Pteridophyte Phylogeny Group classification (PPG I) covered all hierarchical ranks from class to genus but did not include intergeneric hybrids (nothogenera). Here, we provide for the first time a comprehensive evaluation of previously proposed nothogenera in the context of a current phylogeny-based pteridophyte classification (i.e., PPG I). We find that several nothogenera nested in the orders Osmundales and Polypodiales are supported in the framework of PPG I, but others are superfluous. Five new nothogenera are introduced here for the first time. We also explore the distribution of nothospecies across the pteridophyte phylogeny for the first time. We are unable to reject the hypothesis that species richness and nothospecies diversity are correlated, despite the finding that some temperate lineages contribute more nothospecies than expected whereas several tropical lineages lack them. This pattern could be the consequence of either fundamental differences in modes of speciation in temperate and tropical zones or unequal efforts to record nothospecies. In general, we emphasize the need to take nothogenera into account when proposing generic classifications, but the information provided by the existence of such hybrids needs to be carefully evaluated. Our results underscore the need to report and study hybrids in ferns and lycophytes, especially in biodiversity rich areas.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Evaluating the status of fern and lycophyte nothotaxa in the context of the Pteridophyte Phylogeny Group classification (PPG I)

Liu

Schuettpelz

Schneider

2020

J of Sytematics Evolution

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“…Two Brazilian species of Polybotrya are known to hybridize with Cyclodium meniscioides (Willd.) C. Presl, resulting in the hybrid genus ×Cyclobotrya (Engels & Canestraro 2017, Schwartsburd et al 2018. Schott (1834: t. 7).…”

Section: 1mentioning

confidence: 99%

“…The first contributions to the knowledge of this family in the country were given by Raddi (1819), Presl (1822), Schrader (1824), Martius (1828Martius ( -1834, Fée (1869Fée ( , 1873, Baker (1870), and Christensen (1913Christensen ( , 1920. More recently, there were the contributions by Brade (1961Brade ( , 1972, Sundue et al (2013), Prado et al (2014), Canestraro & Labiak (2015), Engels & Canestraro (2017), Schwartsburd et al (2018), Bohn et al (2020), and -in addition to the monographs already mentioned in the previous paragraph and some regional floras (e.g., Brade 1946;Sehnem 1979;Salino & Carvalho 2005;Garcia & Salino 2008;Prado et al 2017). Garcia & Salino (2008) studied the species of Dryopteridaceae from Minas Gerais but adopted a different circumscription for the family (i.e., that of Moran & Riba 1995, which included Didymochlaena, but excluded Bolbitis, Ctenitis, Elaphoglossum, Lastreopsis, Megalastrum, Mickelia, and Parapolystichum).…”

Section: Introductionmentioning

confidence: 99%

Ferns of Viçosa, Minas Gerais, Brazil: Didymochlaenaceae and Dryopteridaceae

Matos

Schwartsburd

2022

Rodriguésia

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We present a taxonomic treatment for the species of Didymochlaenaceae and Dryopteridaceae occurring in the region of Viçosa, Minas Gerais, Brazil. This study was based on 50 herbarium gatherings from IAN, K, NY, PACA, RB, SP, UPCB, US, and VIC. Didymochlaenaceae is represented by a single species, Didymochlaena truncatula, whereas Dryopteridaceae has 11 infrageneric taxa in seven genera: Ctenitis (four taxa, including two varieties), Megalastrum (two species), Mickelia, Parapolystichum, Polybotrya, Rumohra, and Stigmatopteris (one species each). Among the 12 infrageneric taxa here recognized, seven are endemic to the Brazilian Atlantic Forest. Ctenitis distans var. isabellina, Megalastrum connexum, and Polybotrya speciosa are here reported for the first time in Viçosa. Identification keys, descriptions, illustrations, geographical distribution, and comments are presented to all taxa.

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