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

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...

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Autores principales: Hickey, R. James, Macluf, Carmen Cecilia, Link Pérez, Melanie A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2009
Materias:
Ciencias Naturales
Isoetes maxima
Brazil
new species
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/128309
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-128309
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Isoetes maxima
Brazil
new species
spellingShingle Ciencias Naturales
Isoetes maxima
Brazil
new species
Hickey, R. James
Macluf, Carmen Cecilia
Link Pérez, Melanie A.
<i>Isoetes maxima</i>, a New Species from Brazil
topic_facet Ciencias Naturales
Isoetes maxima
Brazil
new species
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.
format Articulo
Articulo
author Hickey, R. James
Macluf, Carmen Cecilia
Link Pérez, Melanie A.
author_facet Hickey, R. James
Macluf, Carmen Cecilia
Link Pérez, Melanie A.
author_sort Hickey, R. James
title <i>Isoetes maxima</i>, a New Species from Brazil
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
publishDate 2009
url http://sedici.unlp.edu.ar/handle/10915/128309
work_keys_str_mv AT hickeyrjames iisoetesmaximaianewspeciesfrombrazil
AT maclufcarmencecilia iisoetesmaximaianewspeciesfrombrazil
AT linkperezmelaniea iisoetesmaximaianewspeciesfrombrazil
bdutipo_str Repositorios
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