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| Caires,Claudenir Simões; Gomes-Bezerra,Kadja Milena; Proença,Carolyn Elinore Barnes. |
| The genus Peristethium, characterized by determinate inflorescences protected by deciduous bracts, occurs in the northwest of South America, as well as Costa Rica and Panama. The main objective of this paper was to transfer one species to what we believe is its correct generic placement in Peristethium, that likewise implies in a shift of the genus' distribution beyond the Amazon. A new combination, Peristethium reticulatum, is proposed, based on Struthanthus reticulatus, described from Tocantins in 1980. The sexual dimorphism of the inflorescences of P. reticulatum (sessile male flowers and pedicellate female flowers) associated with male inflorescences that are inserted at leafless nodes are unique within the genus. The male flowers have dimorphic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazil; Floral dimorphism; Leaf architecture; Struthanthus. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000200002 |
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| González,Cynthia C.. |
| El presente trabajo forma parte de un estudio integrado de arquitectura foliar en especies nativas de Myrtaceas de Argentina. Se estudiaron 21 especies nativas de la flora con el fin de encontrar caracteres o combinaciones de caracteres en la arquitectura foliar que permitan diferenciar las especies argentinas del grupo o subtribu informal "Eugenia", Tribu Myrteae (Familia Myrtaceae). Las hojas estudiadas en este trabajo se caracterizan por ser simples, con ápice y base variables, textura membranácea a coriácea y margen entero. El patrón de venación presenta las siguientes características: venas de primera categoría pinnada, simple y recta, no forman venas agróficas; venación de segunda categoría camptódroma-broquidódroma, con una vena paramarginal y una o... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf architecture; Myrtaceae; Grupo Eugenia; Argentina. |
| Ano: 2011 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722011000100006 |
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| Lima,Renata Gabriela Vila Nova de; Lima,Liliane Ferreira; Ferreira,Angélica Cândida; Araújo,Josiane Silva; Zickel,Carmen Silvia. |
| Abstract: Diploon is a monospecific genus represented by Diploon cuspidatum, an arboreal species that has morphological characteristics distinct from those of other Sapotaceae species. In this study, Diploon cuspidatum leaves were characterized morphoanatomically in order to reveal additional diagnostic characters of their external morphology of the genus. The Diploon petiole presents shape and arrangement of the vascular system flat-convex, occasionally with one or two accessory bundles, many laticifers, and many prismatic crystals. The midrib is biconvex with a U-shaped cuticle on the abaxial side, and laticifers are associated with the vascular tissues. Mesophyll is dorsiventral, palisade parenchyma has two cell layers, T- and Y-shaped malpighiaceous... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf anatomy; Leaf architecture; Micromorphology; Taxonomy; Chrysophylloideae. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100202 |
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