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| Silva,Rachel Macedo da; Mehlig,Ulf; Santos,João Ubiratan Moreira dos; Menezes,Moirah Paula Machado de. |
| The present article reviews studies (some unpublished) of the vegetation of coastal sandy soils (restinga) along the coast of Pará State, northern Brazil. A total of 411 higher plant species are reported; Fabaceae, Poaceae, Cyperaceae, Rubiaceae and Myrtaceae are the most species-rich families. Nearly half of the restinga species (48%) are terrestrial herbs; palms, trees and shrubs account for 39% of the species, the remainder being lianas and epiphytes. Species are frequently wide-spread and occur in coastal areas of Southeastern Brazil as well as at inland sites in the Amazon region. Only two species appear to be exclusively coastal; whereas other species appear to exhibit a preference for sandy soils. Plant assemblages are commonly classified by means... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal forest; Dune vegetation; Sandy coastal plain. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042010000400005 |
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| Silva,Genilson Alves dos Reis e; Santos,João Ubiratan Moreira dos. |
| Sete espécies da subtribo Ecliptinae encontradas nos estados do Acre, Amapá, Amazonas, Pará e Rondônia, são apresentadas como novos registros para a Amazônia brasileira: Acmella uliginosa, Aspilia camporum, Aspilia ulei, Melanthera latifolia, Melanthera nivea, Spilanthes nervosa e Wedelia calycina. São apresentadas descrições e ilustrações para as espécies, dados sobre a distribuição geográfica, hábitat, época de floração e frutificação. Os novos registros evidenciam a importância de estudos sobre a flora amazônica e demonstram a necessidade de coletas mais intensas na região. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Taxonomia; Novas Referências; Distribuição Geográfica. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672010000300008 |
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| Feitoza,Gildo Vieira; Santos,João Ubiratan Moreira dos; Gurgel,Ely Simone Cajueiro; Oliveira,Denise Maria Trombert. |
| The evaluation of the post-germination phases of plants allows the recognition of transitional structures that support the relationships among taxa and their establishment. Together with fruit and seeds, seedlings and saplings provide useful characters for identifying many species. This study aimed to describe and characterize the morphology of the fruits, seeds, seedlings and saplings of Macrolobium acaciifolium, M. bifolium and M. pendulum, as well as to evaluate the ecological, taxonomic and phylogenetic value of the structures identified. In this work, the seeds were sown in plastic trays with sterilized sand and sawdust, without pre-germination treatment. The fruits of the three species are woody legumes, dehiscent fruit or indehiscent fruit. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Detarieae; Embryo; Fabaceae; Plumule; Post-germination development. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062014000300016 |
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| Pereira,Andreza Stephanie de Souza; Simões,André Olmos; Santos,João Ubiratan Moreira dos. |
| Aspidosperma Mart. is one of the most important genera from Apocynaceae Juss. occurring in Brazil. It is present in many plant formations and has species with both medicinal and economic value. From a taxonomic point of view, many of its species are difficult to identify, especially those occurring in the Amazonian region. In order to complement the information already available with regard to the taxonomy and distribution of the genus, the goal of this work was to provide a taxonomic study of the Aspidosperma species occurring in the state of Pará, northern Brazil. This study was based on the analysis of vouchers from the BHCB, HBRA, IAC, IAN, INPA, MG, R, RB and UEC herbaria, as well as scanned images of vouchers from Brazilian and foreign herbaria, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspidospermeae; Diversity; Eastern Amazon; Floristic; Morphology. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000200301 |
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