Recognition of two morpho-types in eastern South American brackens (Pteridium-Dennstaedtiaceae-Polypodiopsida)
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
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/11449/227767 |
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. © 2014 Magnolia Press. |
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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. © 2014 Magnolia Press.Universidade Federal de Viçosa, Departamento de Biologia Vegetal, Av. P.H. Rolfs s.n, CEP 36570-000, Viçosa, Minas GeraisUniversidade Estadual Paulista 'Júlio de Mesquita Filho', Instituto de Biociências, Departamento de Botânica, Av. 24 A 1515, Bela Vista, C. P. 199, 13506-900, Rio Claro, São PauloUniversidade Estadual Paulista 'Júlio de Mesquita Filho', Instituto de Biociências, Departamento de Botânica, Av. 24 A 1515, Bela Vista, C. P. 199, 13506-900, Rio Claro, São PauloUniversidade Federal de Viçosa (UFV)Universidade Estadual Paulista (UNESP)Schwartsburd, Pedro B.de Moraes, Pedro L. R. [UNESP]Lopes-Mattos, Karina L. B.2022-04-29T07:16:10Z2022-04-29T07:16:10Z2014-05-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article103-117http://dx.doi.org/10.11646/phytotaxa.170.2.3Phytotaxa, v. 170, n. 2, p. 103-117, 2014.1179-31631179-3155http://hdl.handle.net/11449/22776710.11646/phytotaxa.170.2.32-s2.0-84902967877Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhytotaxainfo:eu-repo/semantics/openAccess2022-04-29T07:16:10Zoai:repositorio.unesp.br:11449/227767Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-29T07:16:10Repositório 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. © 2014 Magnolia Press. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-05-22 2022-04-29T07:16:10Z 2022-04-29T07:16:10Z |
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, v. 170, n. 2, p. 103-117, 2014. 1179-3163 1179-3155 http://hdl.handle.net/11449/227767 10.11646/phytotaxa.170.2.3 2-s2.0-84902967877 |
url |
http://dx.doi.org/10.11646/phytotaxa.170.2.3 http://hdl.handle.net/11449/227767 |
identifier_str_mv |
Phytotaxa, v. 170, n. 2, p. 103-117, 2014. 1179-3163 1179-3155 10.11646/phytotaxa.170.2.3 2-s2.0-84902967877 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Phytotaxa |
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.source.none.fl_str_mv |
Scopus 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 |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964564139278336 |