Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)

Detalhes bibliográficos
Autor(a) principal: Schwartsburd, Pedro B.
Data de Publicação: 2014
Outros Autores: De Moraes, Pedro L. R. [UNESP], Lopes-Mattos, Karina L. B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.11646/phytotaxa.170.2.3
http://hdl.handle.net/11449/112778
Resumo: In this work we propose the recognition of two well defined morpho-types of Pteridium from eastern South America: P. arachnoideum subsp. arachnoideum s. str., wide-spread from north-eastern Brazil southwards to north-eastern Argentina and Uruguay, and P. arachnoideum subsp. campestre, comb. et stat. nov., endemic to north-eastern Brazil. Inevitably, we propose a narrower circumscription for P. arachnoideum subsp. arachnoideum, being restricted to eastern South America and characterized by free lobes between the distal segments, veins abaxially lanose with lax arachnoid hairs, and laminar tissue between the veins abaxially without farinose appearance, glabrous and visible (total absence of gnarled hairs). This morphological pattern is constant and stable in all 191 specimens studied (including living specimens), and geographically related. Plants from western South America and Central America, previously ascribed to P. arachnoideum s. l., shall be better reclassified into at least one other subspecies-for which no published name is current available. This is morphologically distinct and geographically segregated from P. arachnoideum subsp. arachnoideum s. str. by the South American Dry Diagonal. Based on stomatal guard-cells length, the two morpho-types from eastern South America are presumably diploid. We provide lectotypifications for the two taxa, complete and new synonymies, descriptions, illustrations, light microscopy images, distribution maps, and detailed information about the Pteridium specimens gathered in Brazil by Maximilian, the Prince of Wied, in the early 19th Century. We also indicate overlooked morphological characteristics with taxonomical value within the genus.
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spelling Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)Bracken fernPrince of Wied-NeuwiedPteridium aquilinumPteris campestrisIn this work we propose the recognition of two well defined morpho-types of Pteridium from eastern South America: P. arachnoideum subsp. arachnoideum s. str., wide-spread from north-eastern Brazil southwards to north-eastern Argentina and Uruguay, and P. arachnoideum subsp. campestre, comb. et stat. nov., endemic to north-eastern Brazil. Inevitably, we propose a narrower circumscription for P. arachnoideum subsp. arachnoideum, being restricted to eastern South America and characterized by free lobes between the distal segments, veins abaxially lanose with lax arachnoid hairs, and laminar tissue between the veins abaxially without farinose appearance, glabrous and visible (total absence of gnarled hairs). This morphological pattern is constant and stable in all 191 specimens studied (including living specimens), and geographically related. Plants from western South America and Central America, previously ascribed to P. arachnoideum s. l., shall be better reclassified into at least one other subspecies-for which no published name is current available. This is morphologically distinct and geographically segregated from P. arachnoideum subsp. arachnoideum s. str. by the South American Dry Diagonal. Based on stomatal guard-cells length, the two morpho-types from eastern South America are presumably diploid. We provide lectotypifications for the two taxa, complete and new synonymies, descriptions, illustrations, light microscopy images, distribution maps, and detailed information about the Pteridium specimens gathered in Brazil by Maximilian, the Prince of Wied, in the early 19th Century. We also indicate overlooked morphological characteristics with taxonomical value within the genus.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Projeto Floresta Escola'Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação para o Desenvolvimento da UNESP (FUNDUNESP)Suzano Papel e CeluloseUniv Fed Vicosa, Dept Biol Vegetal, BR-36570000 Vicosa, MG, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Sao Paulo, BrazilUniv Estadual Paulista, Inst Biociencias, Dept Bot, BR-13506900 Sao Paulo, BrazilFUNDUNESP: 00073/11-DFPMagnolia PressUniversidade Federal de Viçosa (UFV)Universidade Estadual Paulista (Unesp)Schwartsburd, Pedro B.De Moraes, Pedro L. R. [UNESP]Lopes-Mattos, Karina L. B.2014-12-03T13:11:03Z2014-12-03T13:11:03Z2014-05-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article103-117http://dx.doi.org/10.11646/phytotaxa.170.2.3Phytotaxa. Auckland: Magnolia Press, v. 170, n. 2, p. 103-117, 2014.1179-3155http://hdl.handle.net/11449/112778WOS:000336845000003Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhytotaxa1.1850,604info:eu-repo/semantics/openAccess2021-10-23T10:54:26Zoai:repositorio.unesp.br:11449/112778Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T10:54:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
title Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
spellingShingle Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
Schwartsburd, Pedro B.
Bracken fern
Prince of Wied-Neuwied
Pteridium aquilinum
Pteris campestris
title_short Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
title_full Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
title_fullStr Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
title_full_unstemmed Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
title_sort Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
author Schwartsburd, Pedro B.
author_facet Schwartsburd, Pedro B.
De Moraes, Pedro L. R. [UNESP]
Lopes-Mattos, Karina L. B.
author_role author
author2 De Moraes, Pedro L. R. [UNESP]
Lopes-Mattos, Karina L. B.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Federal de Viçosa (UFV)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Schwartsburd, Pedro B.
De Moraes, Pedro L. R. [UNESP]
Lopes-Mattos, Karina L. B.
dc.subject.por.fl_str_mv Bracken fern
Prince of Wied-Neuwied
Pteridium aquilinum
Pteris campestris
topic Bracken fern
Prince of Wied-Neuwied
Pteridium aquilinum
Pteris campestris
description In this work we propose the recognition of two well defined morpho-types of Pteridium from eastern South America: P. arachnoideum subsp. arachnoideum s. str., wide-spread from north-eastern Brazil southwards to north-eastern Argentina and Uruguay, and P. arachnoideum subsp. campestre, comb. et stat. nov., endemic to north-eastern Brazil. Inevitably, we propose a narrower circumscription for P. arachnoideum subsp. arachnoideum, being restricted to eastern South America and characterized by free lobes between the distal segments, veins abaxially lanose with lax arachnoid hairs, and laminar tissue between the veins abaxially without farinose appearance, glabrous and visible (total absence of gnarled hairs). This morphological pattern is constant and stable in all 191 specimens studied (including living specimens), and geographically related. Plants from western South America and Central America, previously ascribed to P. arachnoideum s. l., shall be better reclassified into at least one other subspecies-for which no published name is current available. This is morphologically distinct and geographically segregated from P. arachnoideum subsp. arachnoideum s. str. by the South American Dry Diagonal. Based on stomatal guard-cells length, the two morpho-types from eastern South America are presumably diploid. We provide lectotypifications for the two taxa, complete and new synonymies, descriptions, illustrations, light microscopy images, distribution maps, and detailed information about the Pteridium specimens gathered in Brazil by Maximilian, the Prince of Wied, in the early 19th Century. We also indicate overlooked morphological characteristics with taxonomical value within the genus.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-03T13:11:03Z
2014-12-03T13:11:03Z
2014-05-22
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.11646/phytotaxa.170.2.3
Phytotaxa. Auckland: Magnolia Press, v. 170, n. 2, p. 103-117, 2014.
1179-3155
http://hdl.handle.net/11449/112778
WOS:000336845000003
url http://dx.doi.org/10.11646/phytotaxa.170.2.3
http://hdl.handle.net/11449/112778
identifier_str_mv Phytotaxa. Auckland: Magnolia Press, v. 170, n. 2, p. 103-117, 2014.
1179-3155
WOS:000336845000003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Phytotaxa
1.185
0,604
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 103-117
dc.publisher.none.fl_str_mv Magnolia Press
publisher.none.fl_str_mv Magnolia Press
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
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repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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