A classification for Blechnaceae (Polypodiales: Polypodiopsida): New genera, resurrected names, and combinations

Abstract

The fern family Blechnaceae, with about 250 species, has traditionally comprised one large genus, Blechnum, plus seven to nine smaller genera, most with fewer than 10 species. Several phylogenetic analyses strongly suggest that Blechnum in the traditional sense is not a monophyletic group. We propose a new classification for the family, with three subfamilies and 24 genera. All genera are described and new combinations are provided, with an estimate of species number for each genus. We also provide a key for the identification of the genera.

A community‐derived classification for extant lycophytes and ferns

“…Instead of recognizing just four genera within the Lycopodiaceae (sensu Øllgaard, ), the PPG I classification takes the now‐common approach of subdividing the family into 16 genera (Holub, , , , 1985, 1991; Wagner & Beitel, ; Haines, ; Øllgaard, , , ; Field & Bostock, ; Øllgaard & Windisch, ; Field et al, ). Likewise, we mostly follow Almeida et al () in our treatment of 30 genera in Thelypteridaceae (versus five in Smith, ) and we also incorporate considerable subdivision recently proposed for the Hymenophyllaceae (sensu Ebihara et al, ), grammitids (sensu Sundue et al, ), and Blechnaceae (sensu Gasper et al, ). In the majority of these studies, the authors were largely able to re‐establish preexisting (narrower) concepts that were both introduced and discarded prior to the molecular revolution.…”

“…Perrie, D.J.Ohlsen & Brownsey (≡ Blechnum serrulatum Rich.). Circumscription sensu Perrie et al () and Gasper et al (). Monophyletic (Perrie et al, ; Gasper et al, ).…”

Lista de los helechos y licófitos de Cuba

“…; Blechnaceae: Cranfill (1993), Perrie et al (2014), Gasper et al (2016); Cyatheaceae: Korall et al (2006), Lehnert (2011); Dennstaedtiaceae: Tryon (1960), Navarrete and Øllgaard (2000); Didymochlaenaceae: Zhang and Zhang (2015); Dryopteridaceae: Christensen (1913), Christensen (1920), Hennipman (1977), Moran (1986), Moran (1991) Bishop (1977), Bishop (1978), Lellinger (1988), Smith et al (1991), León (1992), Smith (1992), Bishop and Smith (1992), Smith and Moran (1992), Smith (1993), Labiak and Prado (2003), Smith et al (2006), Sundue (2008), Tejero-Díez et al (2009), Labiak et al (2010, , Hirai and Prado (2012), Labiak (2013), Lehnert (2013), Moguel Velázquez and Kessler (2013), Smith and Tejero-Díez (2014), Sundue (2014); Pteridaceae: Scamman (1960), Lellinger (1991), Nauman (1993), Moran (1995), Prado and Windisch (2000), Sánchez-Baracaldo (2004), Barker and Hickey (2006), Li et al (2012), …”

New combinations in Struthiopteris spicant for the European flora

“…Shepherd et al 2007, Rothfels et al 2012, Gabriel y Galán et al 2013, Perrie et al 2014. Recent molecular studies (Gasper et al 2016a) lead to an updated classification attempting to put morphological characters into a natural, phylogenetic relation (Gasper et al 2016b). Because of these changes, the species most people associate with the genus Blechnum, B. spicant (Linnaeus 1753(Linnaeus : 1066 Roth (1794: 56), is now treated under Struthiopteris Scopoli (1754: 25).…”

“…When Blechnum spicant was transferred to the genus Struthiopteris, the two varieties have been omitted (Gasper et al 2016b). Thus, we here provide the required combinations that enable further formal recognition of the endemic Icelandic and Iberian forms while conserving their ranks.…”