Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications

Lepidaploa is a taxonomically complex genus of Vernonieae, which is difficult to delimit morphologically due to vegetative and reproductive characters that overlap with Chrysolaena and Lessingianthus. Anatomical studies of cypselae are taxonomically useful for delimiting subtribes, genera and spec...

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Autores principales: Marques, Danilo, Oliveira Franca, Rafael de, Dematteis, Massimiliano, Marzinek, Juliana
Formato: Artículo
Lenguaje:Inglés
Publicado: Sociedade Botânica do Brasil 2021
Materias:
Carpopodium
Compositae
Cypsela
Floral disk
Pappus
Vernonia
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/28305
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-28305
record_format dspace
spelling I48-R184-123456789-283052024-10-07T10:34:41Z Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications Marques, Danilo Oliveira Franca, Rafael de Dematteis, Massimiliano Marzinek, Juliana Carpopodium Compositae Cypsela Floral disk Pappus Vernonia Lepidaploa is a taxonomically complex genus of Vernonieae, which is difficult to delimit morphologically due to vegetative and reproductive characters that overlap with Chrysolaena and Lessingianthus. Anatomical studies of cypselae are taxonomically useful for delimiting subtribes, genera and species of Asteraceae, and especially within Astereae and Eupatorieae. Given the importance of cypselae to the taxonomy of tribes of Asteraceae, we searched for morphological patterns among the species of Lepidaploa. Using light microscopy, we analyzed fruits of 21 species of Lepidaploa to evaluate the taxonomic position of the genus and species of questionable placement in the group. Our results showed that the morphologies of the cypselae of species of Lepidaploa are homogeneous and similar to other species of Vernonieae. However, pappus vascularization and the number of mesocarp layers could be useful for differentiating the sister groups Chrysolaena, Lepidaploa and Lessingianthus, which present similar macro- and micro-morphological, palynological and chromosomal characters. Also, the presence of glandular trichomes and idioblasts in the cypsela, and lignified cells in the carpopodium exocarp, can be used to separate closely related species. 2021-08-05T13:58:05Z 2021-08-05T13:58:05Z 2018-10 Artículo Marques, Danilo, et al., 2018. Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications. Acta Botanica Brasilica. Brasília: Sociedade Botânica do Brasil, vol. 32, no. 4, p. 642-655. ISSN 1677-941X. 0102-3306 http://repositorio.unne.edu.ar/handle/123456789/28305 eng https://www.scielo.br/j/abb/a/6rmWKn5XtYpR9BBKCCRd6xz/?lang=en openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf application/pdf Sociedade Botânica do Brasil Acta Botanica Brasilica, 2018, vol. 32, no4, p. 642-655.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Carpopodium
Compositae
Cypsela
Floral disk
Pappus
Vernonia
spellingShingle Carpopodium
Compositae
Cypsela
Floral disk
Pappus
Vernonia
Marques, Danilo
Oliveira Franca, Rafael de
Dematteis, Massimiliano
Marzinek, Juliana
Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications
topic_facet Carpopodium
Compositae
Cypsela
Floral disk
Pappus
Vernonia
description Lepidaploa is a taxonomically complex genus of Vernonieae, which is difficult to delimit morphologically due to vegetative and reproductive characters that overlap with Chrysolaena and Lessingianthus. Anatomical studies of cypselae are taxonomically useful for delimiting subtribes, genera and species of Asteraceae, and especially within Astereae and Eupatorieae. Given the importance of cypselae to the taxonomy of tribes of Asteraceae, we searched for morphological patterns among the species of Lepidaploa. Using light microscopy, we analyzed fruits of 21 species of Lepidaploa to evaluate the taxonomic position of the genus and species of questionable placement in the group. Our results showed that the morphologies of the cypselae of species of Lepidaploa are homogeneous and similar to other species of Vernonieae. However, pappus vascularization and the number of mesocarp layers could be useful for differentiating the sister groups Chrysolaena, Lepidaploa and Lessingianthus, which present similar macro- and micro-morphological, palynological and chromosomal characters. Also, the presence of glandular trichomes and idioblasts in the cypsela, and lignified cells in the carpopodium exocarp, can be used to separate closely related species.
format Artículo
author Marques, Danilo
Oliveira Franca, Rafael de
Dematteis, Massimiliano
Marzinek, Juliana
author_facet Marques, Danilo
Oliveira Franca, Rafael de
Dematteis, Massimiliano
Marzinek, Juliana
author_sort Marques, Danilo
title Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications
title_short Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications
title_full Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications
title_fullStr Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications
title_full_unstemmed Fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications
title_sort fruit of lepidaploa (cass.) cass. (vernonieae, asteraceae) : anatomy and taxonomic implications
publisher Sociedade Botânica do Brasil
publishDate 2021
url http://repositorio.unne.edu.ar/handle/123456789/28305
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AT dematteismassimiliano fruitoflepidaploacasscassvernonieaeasteraceaeanatomyandtaxonomicimplications
AT marzinekjuliana fruitoflepidaploacasscassvernonieaeasteraceaeanatomyandtaxonomicimplications
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