Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae)
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/225842 |
Resumo: | The aim of this contribution was to analyze the morpho-anatomical floral structure of Epiphyllum phyllanthus (L.) Haw., a widely distributed species across South America, occurring in humid forests as an epiphyte. Flowers and flower buds were collected in Maringá, Paraná State, Brazil, fixed, processed, and analyzed under light microscope and scanning electron microscope. The flower is sessile and epigynous with a well-developed hypanthium. All flower whorls have uniseriate epidermis. Secretory cavities containing mucilage and calcium oxalate crystals occur throughout the floral parenchymatous tissue. The androecium has many stamens with tetrasporangiate and bithecal anthers. The wall of the young anther is formed by epidermis, endothecium, a middle layer, and binucleate secretory tapetum that eventually becomes uninucleate. The gynoecium is syncarpous with 9-10 carpels, pluriovulate, and with parietal placentation. The ovary has inverted vascular bundles in a similar pattern as in Pereskia. The nectariferous region occurs on the inner surface of the hypanthium. The stigma has 9-10 lobes with a secretory epidermis. The ovules are circinotropous, bitegmic, crassinucelate, and have long funiculus as in many other Cactaceae. |
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Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae)AntherGynoeciumHypanthiumNectaryOvuleThe aim of this contribution was to analyze the morpho-anatomical floral structure of Epiphyllum phyllanthus (L.) Haw., a widely distributed species across South America, occurring in humid forests as an epiphyte. Flowers and flower buds were collected in Maringá, Paraná State, Brazil, fixed, processed, and analyzed under light microscope and scanning electron microscope. The flower is sessile and epigynous with a well-developed hypanthium. All flower whorls have uniseriate epidermis. Secretory cavities containing mucilage and calcium oxalate crystals occur throughout the floral parenchymatous tissue. The androecium has many stamens with tetrasporangiate and bithecal anthers. The wall of the young anther is formed by epidermis, endothecium, a middle layer, and binucleate secretory tapetum that eventually becomes uninucleate. The gynoecium is syncarpous with 9-10 carpels, pluriovulate, and with parietal placentation. The ovary has inverted vascular bundles in a similar pattern as in Pereskia. The nectariferous region occurs on the inner surface of the hypanthium. The stigma has 9-10 lobes with a secretory epidermis. The ovules are circinotropous, bitegmic, crassinucelate, and have long funiculus as in many other Cactaceae.Departamento de Botânica Instituto de Biociências UNESP, Rio Claro, SPDepartamento de Biologia Centro de Ciências Biológicas UEM, Maringá, PRDepartamento de Botânica Instituto de Biociências UNESP, Rio Claro, SPUniversidade Estadual Paulista (UNESP)Universidade Estadual de Maringá (UEM)De Almeida, Odair José Garcia [UNESP]Sartori-Paoli, Adelita Aparecida [UNESP]De Souza, Luiz Antonio2022-04-28T21:01:17Z2022-04-28T21:01:17Z2010-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article65-80Revista Mexicana de Biodiversidad, v. 81, n. 1, p. 65-80, 2010.http://hdl.handle.net/11449/2258422-s2.0-77952031935Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Mexicana de Biodiversidadinfo:eu-repo/semantics/openAccess2022-04-28T21:01:17Zoai:repositorio.unesp.br:11449/225842Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:51:41.953842Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) |
title |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) |
spellingShingle |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) De Almeida, Odair José Garcia [UNESP] Anther Gynoecium Hypanthium Nectary Ovule |
title_short |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) |
title_full |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) |
title_fullStr |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) |
title_full_unstemmed |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) |
title_sort |
Flower morpho-anatomy in Epiphyllum phyllanthus (Cactaceae) |
author |
De Almeida, Odair José Garcia [UNESP] |
author_facet |
De Almeida, Odair José Garcia [UNESP] Sartori-Paoli, Adelita Aparecida [UNESP] De Souza, Luiz Antonio |
author_role |
author |
author2 |
Sartori-Paoli, Adelita Aparecida [UNESP] De Souza, Luiz Antonio |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Universidade Estadual de Maringá (UEM) |
dc.contributor.author.fl_str_mv |
De Almeida, Odair José Garcia [UNESP] Sartori-Paoli, Adelita Aparecida [UNESP] De Souza, Luiz Antonio |
dc.subject.por.fl_str_mv |
Anther Gynoecium Hypanthium Nectary Ovule |
topic |
Anther Gynoecium Hypanthium Nectary Ovule |
description |
The aim of this contribution was to analyze the morpho-anatomical floral structure of Epiphyllum phyllanthus (L.) Haw., a widely distributed species across South America, occurring in humid forests as an epiphyte. Flowers and flower buds were collected in Maringá, Paraná State, Brazil, fixed, processed, and analyzed under light microscope and scanning electron microscope. The flower is sessile and epigynous with a well-developed hypanthium. All flower whorls have uniseriate epidermis. Secretory cavities containing mucilage and calcium oxalate crystals occur throughout the floral parenchymatous tissue. The androecium has many stamens with tetrasporangiate and bithecal anthers. The wall of the young anther is formed by epidermis, endothecium, a middle layer, and binucleate secretory tapetum that eventually becomes uninucleate. The gynoecium is syncarpous with 9-10 carpels, pluriovulate, and with parietal placentation. The ovary has inverted vascular bundles in a similar pattern as in Pereskia. The nectariferous region occurs on the inner surface of the hypanthium. The stigma has 9-10 lobes with a secretory epidermis. The ovules are circinotropous, bitegmic, crassinucelate, and have long funiculus as in many other Cactaceae. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-04-01 2022-04-28T21:01:17Z 2022-04-28T21:01:17Z |
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 |
Revista Mexicana de Biodiversidad, v. 81, n. 1, p. 65-80, 2010. http://hdl.handle.net/11449/225842 2-s2.0-77952031935 |
identifier_str_mv |
Revista Mexicana de Biodiversidad, v. 81, n. 1, p. 65-80, 2010. 2-s2.0-77952031935 |
url |
http://hdl.handle.net/11449/225842 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Mexicana de Biodiversidad |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
65-80 |
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_ |
1808128711152631808 |