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Anatomical interpretations of the taxonomy of Chamaecrista (L.) Moench sect. Ab...
Francino, Dayana M. T.; Coutinho, Ítalo A. C.; Dalvi, Valdnéa C.; Azevedo, Aristéa A.; Conceição, Adilva de S.; Meira, Renata M. S. A.Chamaecrista (L.) Moench (Caesalpinioideae– Leguminosae) with 330 species is organized into six sections: Apoucouita, Absus, Grimaldia, Chamaecrista, Caliciopsis and Xerocalyx. Section Absus is the largest section of the Chamaecrista and is organized into four subsections, viz., subsect. Adenophyllum, subsect. Baseophyllum, subsect. Otophyllum and subsect. Absus. This section is not monophyletic and has a compl...
Anatomy and histochemistry of the vegetative organs of Cissus verticillata- a n...
Oliveira, Andréia B. de; Mendonça, Maria S. de; Azevedo, Aristea A.; Meira, Renata M. S. A.The purpose of this paper was to carry out an anatomical and histochemical analysis of the vegetative organs of Cissus verticillata (L.) Nicolson & C.E. Jarvis, Vitaceae, to contribute for the attest the taxonomic identity of the medicinal plant. Samples from root, stem, leaf and tendril were cleared, dissociated and processed according to the usual methodology for observation under light and scanning electron ...
Brazil’s mining code under attack: giant mining companies impose unprecedented ...
Meira, Renata M. S. A.; Peixoto, Ariane L.; Coelho, Marcus A. N.; Ponzo, Andréa P. L.; Esteves, Vânia G. L.; Silva, Micheline C.; Câmara, Paulo E. A. S.Brazil owns one of the largest biodiversity in the world. It has the largest area of tropical forests, the most biodiverse tropical savanna and is one of the countries that have experienced very significant economic growth during the twentieth Century and the beginning of the twenty-first Century. It is among the top ten economies of the world, largely based on environmental resources and commodities production...
Anatomical interpretations of the taxonomy of Chamaecrista (L.) Moench sect. Ab...
Coutinho, Ítalo A. C.; Francino, Dayana M. T.; Dalvi, Valdnéa C.; Azevedo, Aristéa A.; Conceição, Adilva de S.; Meira, Renata M. S. A.Chamaecrista (L.) Moench (Caesalpinioideae–Leguminosae) with 330 species is organized into six sections: Apoucouita, Absus, Grimaldia, Chamaecrista, Caliciopsis and Xerocalyx. Section Absus is the largest section of the Chamaecrista and is organized into four subsections, viz., subsect. Adenophyllum, subsect. Baseophyllum, subsect. Otophyllum and subsect. Absus. This section is not monophyletic and has a comple...
Foliar secretory structures in Crotoneae (Euphorbiaceae): diversity, anatomy, a...
Vitarelli, Narah C.; Riina, Ricarda; Caruzo, Maria Beatriz R.; Cordeiro, Inês; Fuertes‐Aguilar, Javier; Meira, Renata M. S. A.Phylogenetic and morphological studies have helped clarify the systematics of large and complex groups such as the tribe Crotoneae (Euphorbiaceae). However, very little is known about the diversity, structure, and function of anatomical features in this tribe. Crotoneae comprises the species‐rich pantropical genus Croton and six small neotropical genera. Here we characterized the anatomy of leaf secretory struc...
Chemical composition and histochemistry of Sphagneticola trilobata essential oil
Silva, Cleber José da; Barbosa, Luiz C. A.; Demuner, Antonio J.; Montanari, Ricardo M.; Francino, Dayana; Meira, Renata M. S. A.; Souza, Ana Olívia deAnatomical and histochemical investigations of Sphagneticola trilobata (L.) Pruski, Asteraceae, secretory structures in leaves and stems and the seasonal variation of essential oils were carried out. Histochemical techniques enabled the specific location of the essential oil accumulation in the internal (canals) and external structures (trichomes). Histochemical analysis showed that the secretory trichomes prod...
Anatomy of vegetative organs of Scutellaria agrestis, a medicinal plant cultiva...
Meira, Renata M. S. A.; Mendonça, Maria S. de; Oliveira, Andréia B. deScutellaria agrestis A. St. -Hil. ex Benth. , Lamiaceae (trevo-roxo) is cultivated for medicinal purposes by residents of the riverine communities in the State of Amazonas, Brazil. This study aimed to characterize the anatomy and to make histochemical analysis on vegetative organs of S. agrestis. Samples of the leaf, stem and root were collected from five plants cultivated by the communities located in the Soli...
Foliar anatomy of neotropical Salicaceae: potentially useful characters for tax...
Thadeo, Marcela; Azevedo, Aristéa A.; Meira, Renata M. S. A.The taxonomy of neotropical Salicaceae, a family that now includes the majority of the former Flacourtiaceae, has been problematic, especially because they display very diverse morphology and have several characteristics in common with many other families. Recent phylogenetic studies have proposed substantial changes at both family and generic levels. Considering the importance of anatomy as an aid for taxonomy...