Data/hora: 12/06/2024 17:07:37

Provedor de dados: 	39	
País: 	Brazil	
Título: 	Fruit of Lepidaploa (Cass.) Cass. (Vernonieae, Asteraceae): anatomy and taxonomic implications	
Autores: 	Marques,Danilo; Franca,Rafael de Oliveira; Dematteis,Massimiliano; Marzinek,Juliana.	
Data: 	2018-12-01	
Ano: 	2018	
Palavras-chave: 	Carpopodium; Compositae; Cypsela; Floral disk; Pappus; Vernonia.	
Resumo: 	ABSTRACT 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.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062018000400642	
Editor: 	Sociedade Botânica do Brasil	
Relação: 	10.1590/0102-33062018abb0174	
Formato: 	text/html	
Fonte: 	Acta Botanica Brasilica  v.32 n.4 2018	
Fonte: 	info:eu-repo/semantics/openAccess