<i>Isoetes maxima</i>, a New Species from Brazil

Autores
Hickey, R. James; Macluf, Carmen Cecilia; Link Pérez, Melanie A.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Isoetes maxima from eastern Brazil is described as a new species. This taxon differs from other fully aquatic species in South America by a combination of its overall size, leaf coloration, finely tapering subulae, and megaspore morphology. While examining Isoetes from eastern Brazil, we encountered a specimen whose large size and dark coloration are unlike any known species from that region. The plants have numerous, very narrow, densely packed, and finely tapering leaves, and its megaspores are rugulate to tuberculate. In contrast, other large Isoetes in this region of South America have broader leaves that are less densely packed, and reticulate megaspores (Fuchs-Eckert, 1986; Macluf et al., 2008). The specimens in question were collected by Aloysio Sehnem in 1970. Sehnem determined his collection to be a new species and designated it so on the label as Isoetes maxima. The label indicates the collection as the intended holotype; however, Sehnem never described or validly published the new species. We have elected to use the name that Sehnem had inscribed on the specimen label since the overall stature and robust appearance of the taxon merit the appellation.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Isoetes maxima
Brazil
new species
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/128309

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network_name_str SEDICI (UNLP)
spelling <i>Isoetes maxima</i>, a New Species from BrazilHickey, R. JamesMacluf, Carmen CeciliaLink Pérez, Melanie A.Ciencias NaturalesIsoetes maximaBrazilnew speciesIsoetes maxima from eastern Brazil is described as a new species. This taxon differs from other fully aquatic species in South America by a combination of its overall size, leaf coloration, finely tapering subulae, and megaspore morphology. While examining Isoetes from eastern Brazil, we encountered a specimen whose large size and dark coloration are unlike any known species from that region. The plants have numerous, very narrow, densely packed, and finely tapering leaves, and its megaspores are rugulate to tuberculate. In contrast, other large Isoetes in this region of South America have broader leaves that are less densely packed, and reticulate megaspores (Fuchs-Eckert, 1986; Macluf et al., 2008). The specimens in question were collected by Aloysio Sehnem in 1970. Sehnem determined his collection to be a new species and designated it so on the label as Isoetes maxima. The label indicates the collection as the intended holotype; however, Sehnem never described or validly published the new species. We have elected to use the name that Sehnem had inscribed on the specimen label since the overall stature and robust appearance of the taxon merit the appellation.Facultad de Ciencias Naturales y Museo2009info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf194-199http://sedici.unlp.edu.ar/handle/10915/128309enginfo:eu-repo/semantics/altIdentifier/issn/0002-8444info:eu-repo/semantics/altIdentifier/issn/1938-422xinfo:eu-repo/semantics/altIdentifier/doi/10.1640/0002-8444-99.3.194info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:03Zoai:sedici.unlp.edu.ar:10915/128309Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:03.865SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv <i>Isoetes maxima</i>, a New Species from Brazil
title <i>Isoetes maxima</i>, a New Species from Brazil
spellingShingle <i>Isoetes maxima</i>, a New Species from Brazil
Hickey, R. James
Ciencias Naturales
Isoetes maxima
Brazil
new species
title_short <i>Isoetes maxima</i>, a New Species from Brazil
title_full <i>Isoetes maxima</i>, a New Species from Brazil
title_fullStr <i>Isoetes maxima</i>, a New Species from Brazil
title_full_unstemmed <i>Isoetes maxima</i>, a New Species from Brazil
title_sort <i>Isoetes maxima</i>, a New Species from Brazil
dc.creator.none.fl_str_mv Hickey, R. James
Macluf, Carmen Cecilia
Link Pérez, Melanie A.
author Hickey, R. James
author_facet Hickey, R. James
Macluf, Carmen Cecilia
Link Pérez, Melanie A.
author_role author
author2 Macluf, Carmen Cecilia
Link Pérez, Melanie A.
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Isoetes maxima
Brazil
new species
topic Ciencias Naturales
Isoetes maxima
Brazil
new species
dc.description.none.fl_txt_mv Isoetes maxima from eastern Brazil is described as a new species. This taxon differs from other fully aquatic species in South America by a combination of its overall size, leaf coloration, finely tapering subulae, and megaspore morphology. While examining Isoetes from eastern Brazil, we encountered a specimen whose large size and dark coloration are unlike any known species from that region. The plants have numerous, very narrow, densely packed, and finely tapering leaves, and its megaspores are rugulate to tuberculate. In contrast, other large Isoetes in this region of South America have broader leaves that are less densely packed, and reticulate megaspores (Fuchs-Eckert, 1986; Macluf et al., 2008). The specimens in question were collected by Aloysio Sehnem in 1970. Sehnem determined his collection to be a new species and designated it so on the label as Isoetes maxima. The label indicates the collection as the intended holotype; however, Sehnem never described or validly published the new species. We have elected to use the name that Sehnem had inscribed on the specimen label since the overall stature and robust appearance of the taxon merit the appellation.
Facultad de Ciencias Naturales y Museo
description Isoetes maxima from eastern Brazil is described as a new species. This taxon differs from other fully aquatic species in South America by a combination of its overall size, leaf coloration, finely tapering subulae, and megaspore morphology. While examining Isoetes from eastern Brazil, we encountered a specimen whose large size and dark coloration are unlike any known species from that region. The plants have numerous, very narrow, densely packed, and finely tapering leaves, and its megaspores are rugulate to tuberculate. In contrast, other large Isoetes in this region of South America have broader leaves that are less densely packed, and reticulate megaspores (Fuchs-Eckert, 1986; Macluf et al., 2008). The specimens in question were collected by Aloysio Sehnem in 1970. Sehnem determined his collection to be a new species and designated it so on the label as Isoetes maxima. The label indicates the collection as the intended holotype; however, Sehnem never described or validly published the new species. We have elected to use the name that Sehnem had inscribed on the specimen label since the overall stature and robust appearance of the taxon merit the appellation.
publishDate 2009
dc.date.none.fl_str_mv 2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/128309
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dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0002-8444
info:eu-repo/semantics/altIdentifier/issn/1938-422x
info:eu-repo/semantics/altIdentifier/doi/10.1640/0002-8444-99.3.194
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
194-199
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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