Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil
- Autores
- Salas, Roberto Manuel; Viana, Pedro Lage; Cabral, Elsa Leonor; Dessein, Steven; Janssens, Steven
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fil: Salas, Roberto Manuel. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina.
Fil: Salas, Roberto Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
Fil: Viana, Pedro Lage. Museo Paraense Emílio Goeldi; Brasil.
Fil: Cabral, Elsa Leonor. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina.
Fil: Cabral, Elsa Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.
Fil: Dessein, Steven. Botanic Garden Meise; Bélgica.
Fil: Janssens, Steven. Botanic Garden Meise; Bélgica.
Carajasia is described as a new genus of Rubiaceae. It is so far known only from the mountain summits of Serra dos Carajás (Pará, Brazil), where it is part of a shrubby vegetation surrounded by tropical rainforest. The new genus belongs to the tribe Spermacoceae and is positioned within it to the Spermacoce clade. Carajasia is unique within the clade in having a very particular combination of characters: flowering branches with two axillary flowers per node, homostylous flowers, corollas with a fringe of moniliform hairs, pubescent styles with distinct stigma lobes, bilobed nectariferous discs covered by triangular papillae, pollen with a double reticulum and fruits with a peculiar type of dehiscence. A detailed description of Carajasia is presented, including observations of the fruit and pollen, along with distribution maps and images of the plant in its habitat. A dichotomous key to distinguish Carajasia from other genera with deeply divided stigmas is provided. A molecular phylogenetic study was carried out using ITS and ETS sequences to determine the phylogenetic position of the new genus within the Spermacoce clade. The results of the combined analyses demonstrated that Carajasia is sister to Galianthe with moderate to high support. Both genera form a weakly supported clade with Schwendenera. This clade is sister to the other genera of the Spermacoce clade studied in this work. Galianthe and Schwendenera share with Carajasia pollen with a double reticulum, but they are clearly differentiated by suffruticose habit, heterostylous flowers and the pattern of fruit dehiscence. To clarify the phylogenetic position of Carajasia, some morphological characters are discussed based on the molecular results: division of the stigma, pollen types and floral syndrome. - Fuente
- Phytotaxa, 2015, vol. 206, no. 1, p. 14-29.
- Materia
-
Galianthe
Spermacoce clade
Spermacoceae
phylogeny
taxonomy
pollen - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-nd/2.5/ar/
- Repositorio
- Institución
- Universidad Nacional del Nordeste
- OAI Identificador
- oai:repositorio.unne.edu.ar:123456789/28528
Ver los metadatos del registro completo
id |
RIUNNE_6a619d77b4b36d707416b5b623b92409 |
---|---|
oai_identifier_str |
oai:repositorio.unne.edu.ar:123456789/28528 |
network_acronym_str |
RIUNNE |
repository_id_str |
4871 |
network_name_str |
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) |
spelling |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, BrazilSalas, Roberto ManuelViana, Pedro LageCabral, Elsa LeonorDessein, StevenJanssens, StevenGaliantheSpermacoce cladeSpermacoceaephylogenytaxonomypollenFil: Salas, Roberto Manuel. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina.Fil: Salas, Roberto Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.Fil: Viana, Pedro Lage. Museo Paraense Emílio Goeldi; Brasil.Fil: Cabral, Elsa Leonor. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina.Fil: Cabral, Elsa Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina.Fil: Dessein, Steven. Botanic Garden Meise; Bélgica.Fil: Janssens, Steven. Botanic Garden Meise; Bélgica.Carajasia is described as a new genus of Rubiaceae. It is so far known only from the mountain summits of Serra dos Carajás (Pará, Brazil), where it is part of a shrubby vegetation surrounded by tropical rainforest. The new genus belongs to the tribe Spermacoceae and is positioned within it to the Spermacoce clade. Carajasia is unique within the clade in having a very particular combination of characters: flowering branches with two axillary flowers per node, homostylous flowers, corollas with a fringe of moniliform hairs, pubescent styles with distinct stigma lobes, bilobed nectariferous discs covered by triangular papillae, pollen with a double reticulum and fruits with a peculiar type of dehiscence. A detailed description of Carajasia is presented, including observations of the fruit and pollen, along with distribution maps and images of the plant in its habitat. A dichotomous key to distinguish Carajasia from other genera with deeply divided stigmas is provided. A molecular phylogenetic study was carried out using ITS and ETS sequences to determine the phylogenetic position of the new genus within the Spermacoce clade. The results of the combined analyses demonstrated that Carajasia is sister to Galianthe with moderate to high support. Both genera form a weakly supported clade with Schwendenera. This clade is sister to the other genera of the Spermacoce clade studied in this work. Galianthe and Schwendenera share with Carajasia pollen with a double reticulum, but they are clearly differentiated by suffruticose habit, heterostylous flowers and the pattern of fruit dehiscence. To clarify the phylogenetic position of Carajasia, some morphological characters are discussed based on the molecular results: division of the stigma, pollen types and floral syndrome.Magnolia Press2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfSalas, Roberto Manuel, et al., 2015. Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil. Phytotaxa. Auckland: Magnolia Press, vol. 206, no. 1, p. 14-29. ISSN 1179-3163.1179-3155http://repositorio.unne.edu.ar/handle/123456789/28528Phytotaxa, 2015, vol. 206, no. 1, p. 14-29.reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)instname:Universidad Nacional del Nordesteenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/ar/Atribución-NoComercial-SinDerivadas 2.5 Argentina2025-09-04T11:14:13Zoai:repositorio.unne.edu.ar:123456789/28528instacron:UNNEInstitucionalhttp://repositorio.unne.edu.ar/Universidad públicaNo correspondehttp://repositorio.unne.edu.ar/oaiososa@bib.unne.edu.ar;sergio.alegria@unne.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:48712025-09-04 11:14:13.313Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordestefalse |
dc.title.none.fl_str_mv |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil |
title |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil |
spellingShingle |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil Salas, Roberto Manuel Galianthe Spermacoce clade Spermacoceae phylogeny taxonomy pollen |
title_short |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil |
title_full |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil |
title_fullStr |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil |
title_full_unstemmed |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil |
title_sort |
Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil |
dc.creator.none.fl_str_mv |
Salas, Roberto Manuel Viana, Pedro Lage Cabral, Elsa Leonor Dessein, Steven Janssens, Steven |
author |
Salas, Roberto Manuel |
author_facet |
Salas, Roberto Manuel Viana, Pedro Lage Cabral, Elsa Leonor Dessein, Steven Janssens, Steven |
author_role |
author |
author2 |
Viana, Pedro Lage Cabral, Elsa Leonor Dessein, Steven Janssens, Steven |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Galianthe Spermacoce clade Spermacoceae phylogeny taxonomy pollen |
topic |
Galianthe Spermacoce clade Spermacoceae phylogeny taxonomy pollen |
dc.description.none.fl_txt_mv |
Fil: Salas, Roberto Manuel. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina. Fil: Salas, Roberto Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina. Fil: Viana, Pedro Lage. Museo Paraense Emílio Goeldi; Brasil. Fil: Cabral, Elsa Leonor. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina. Fil: Cabral, Elsa Leonor. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Botánica del Nordeste; Argentina. Fil: Dessein, Steven. Botanic Garden Meise; Bélgica. Fil: Janssens, Steven. Botanic Garden Meise; Bélgica. Carajasia is described as a new genus of Rubiaceae. It is so far known only from the mountain summits of Serra dos Carajás (Pará, Brazil), where it is part of a shrubby vegetation surrounded by tropical rainforest. The new genus belongs to the tribe Spermacoceae and is positioned within it to the Spermacoce clade. Carajasia is unique within the clade in having a very particular combination of characters: flowering branches with two axillary flowers per node, homostylous flowers, corollas with a fringe of moniliform hairs, pubescent styles with distinct stigma lobes, bilobed nectariferous discs covered by triangular papillae, pollen with a double reticulum and fruits with a peculiar type of dehiscence. A detailed description of Carajasia is presented, including observations of the fruit and pollen, along with distribution maps and images of the plant in its habitat. A dichotomous key to distinguish Carajasia from other genera with deeply divided stigmas is provided. A molecular phylogenetic study was carried out using ITS and ETS sequences to determine the phylogenetic position of the new genus within the Spermacoce clade. The results of the combined analyses demonstrated that Carajasia is sister to Galianthe with moderate to high support. Both genera form a weakly supported clade with Schwendenera. This clade is sister to the other genera of the Spermacoce clade studied in this work. Galianthe and Schwendenera share with Carajasia pollen with a double reticulum, but they are clearly differentiated by suffruticose habit, heterostylous flowers and the pattern of fruit dehiscence. To clarify the phylogenetic position of Carajasia, some morphological characters are discussed based on the molecular results: division of the stigma, pollen types and floral syndrome. |
description |
Fil: Salas, Roberto Manuel. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura; Argentina. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
Salas, Roberto Manuel, et al., 2015. Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil. Phytotaxa. Auckland: Magnolia Press, vol. 206, no. 1, p. 14-29. ISSN 1179-3163. 1179-3155 http://repositorio.unne.edu.ar/handle/123456789/28528 |
identifier_str_mv |
Salas, Roberto Manuel, et al., 2015. Carajasia (rubiaceae), a new endangered genus from carajás mountain range, Pará, Brazil. Phytotaxa. Auckland: Magnolia Press, vol. 206, no. 1, p. 14-29. ISSN 1179-3163. 1179-3155 |
url |
http://repositorio.unne.edu.ar/handle/123456789/28528 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Atribución-NoComercial-SinDerivadas 2.5 Argentina |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Atribución-NoComercial-SinDerivadas 2.5 Argentina |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Magnolia Press |
publisher.none.fl_str_mv |
Magnolia Press |
dc.source.none.fl_str_mv |
Phytotaxa, 2015, vol. 206, no. 1, p. 14-29. reponame:Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) instname:Universidad Nacional del Nordeste |
reponame_str |
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) |
collection |
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) |
instname_str |
Universidad Nacional del Nordeste |
repository.name.fl_str_mv |
Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) - Universidad Nacional del Nordeste |
repository.mail.fl_str_mv |
ososa@bib.unne.edu.ar;sergio.alegria@unne.edu.ar |
_version_ |
1842344216955453440 |
score |
12.623145 |