RESUMO Os campos rupestres sobre canga são um ambiente peculiar e freqüente na região do Quadrilátrero Ferrífero, Minas Gerais. Sua vegetação, associada a afloramentos hematíticos, apresenta uma série de adaptações morfológicas fiosiológicas, assim como alto grau endemismo. Foi realizado leventamento florístico, restrito às fanerógamas, caracterização descritiva dos Serra da Calçada. Para tal, realizaram-se campanhas campo mensais, entre junho 2001 agosto 2002, foram analisados exemplares...

Salacia juradoi (Celastraceae), a new species of tree from the forest remnants Guayaquil in coastal Ecuador, is here described and illustrated, affinities with closely morphologically related taxa commented. The conservation status assessed as Endangered.

Analysis of 105 scats the maned wolf ( Chrysocyon brachyurus ) collected in central Brazil yielded 304 occurrences food items which fruits Solanum lycocarpum , rodents, and birds accounted for 61.5%. By analysis minimum number individual animals, rodents were 75% a total 156 prey. On other hand, S. armadillos Dasypus spp.) bulk estimated biomass consumption, yielding 63.7% 73.5 kg. Rodents mostly captured during dry season, while miscellaneous consumed wet season. The consumption was...

Abstract Cloud forests usually occur at high-altitude sites of the Atlantic Forest in eastern Brazil, albeit scattered and fragmented along mountain tops. In this habitat, vegetation occurs low-temperature conditions is provided by additional water sources that arise due to horizontal precipitation frequent fogs. Together with more considerable air movement higher luminosity, these factors are conditioning for singular floras high elevations, mainly vascular epiphytes, which macro...

Ethanol extract from Arrabidaea triplinervia leaves showed in vitro activity (ED100 5.0 mg/ml) against trypomastigotes of Trypanosoma cruzi, the etiologic agent Chagas; disease. Bioactivity-directed fractionation this led to isolation ursolic and oleanolic acids as trypanocidal compounds besides pomolic acid (not tested) alpinetine (inactive). A series natural synthetic derivatives was simultaneously assayed for structure relationships (SAR) studies. Ursolic 0.4 four times more active than...

Abstract Maytenus s. l. (including Gymnosporia) is a morphologically diverse genus of about 300 species that widely distributed in the tropics and subtropics both Old New Worlds. Its delimitation has been extensively debated despite segregation Gymnosporia, remains heterogeneous, polyphyletic group. To delimit natural segregate genera we increased taxon sampling generated sequences from two nuclear gene regions (ITS 26S rDNA) plastid loci (matK trnL-F) to analyze together with morphological...

Maytenus species are distributed in the New World from Argentina to U. S. A. The genus delimitation has been controversial, especially relation inclusion of Gymnosporia. treated a broad sense such that it was considered widely tropics and subtropics worldwide. Even its current restricted circumscription, remains paraphyletic with Fraunhofera Plenckia nested within it. We increased taxon sampling relative previous studies sampled representing greatest morphological diversity throughout...

O presente trabalho teve por objetivo a análise comparativa dos óleos voláteis de espécies da família Piperaceae. As estudadas foram as seguintes: Piper aduncum, P. amalago, arboreum, cernuum, hispidum, regnelii, submarginalum, vicosanum e Pothomorphe umbellata. A foi efetuada pela combinação técnicas Cromatografia Fase Gasosa (CG) acoplada Espectrometria Massa (CG/EM). porcentagem identificação constituintes nas análises vicosanum, submarginalum umbellata, atingiu valores superiores 80%....

Abstract Ethanol extracts of Clytostoma ramentaceum Bur. & K. Schum and Mansoa hirsuta DC. (Bignoniaceae) inhibited the growth standardized cultures Aspergillus niger Fusarium oxysporum , at concentrations 400 µg 500 µg, in bioautographic assays. The activity‐guided fractionation C. extract afforded ursolic acid 2‐(3′,4′‐dihydroxyphenyl) ethanol, both active against test fungi (100 µg). These compounds are reported for first time were not detected M. extract, according to HPLC analysis....

Abstract The phylogeny of Celastraceae subfamily Salacioideae (ca. 255 species in the Old and New World tropics) tribe Lophopetaleae 29 southern Asia Austral-Pacific) was inferred using morphological characters together with plastid (matK, trnL-F) nuclear (ITS 26S rDNA) genes. Brassiantha, a monotypic genus endemic to Guinea, is be more closely related clade Dicarpellum (New Caledonia) Hypsophila (Queensland, Australia) than it Hippocrateoideae or Salacioideae. This unambiguously supported...

Este estudo revisou as exsicatas depositadas no Herbário BHCB coletadas em dois fragmentos de Mata Atlântica interior Estado Minas Gerais, Estação Biológica Caratinga (EBC), município e Parque Estadual do Rio Doce (PERD), nos municípios Marliéria, Timóteo Dionísio. Foram encontradas 3366 1048 espécies, agrupadas 538 gêneros 123 famílias. Na EBC há 513 espécies que não ocorrem PERD, onde 242 na EBC; 293 ambas áreas, com um coeficiente similaridade 64%. As cinco famílias maior número foram...

This is a floristic survey of Myrtaceae in the Serra do Caraça, Minas Gerais. Fifty two species were found belonging to 12 genera - Myrcia with 17 species, Eugenia nine, Campomanesia and Myrciaria five each, Psidium four, Siphoneugena three, Blepharocalyx, Calyptranthes, Marlierea Myrceugenia Accara Plinia one each. Descriptions identification keys, geographical distributions, illustrations comments are provided.

Ethanol extracts of eighteen Bignoniaceae species have been evaluated by the MTT assay for cytotoxicity in Vero cells and antiviral activity against Human herpes virus type 1, Vaccinia murine Encephalomyocarditis virus. Among such species, seven are reported to be traditional medicinal use No was observed most up concentration 500 μg/mL. Fourteen (50%) 28 assayed disclosed with EC50 values range 4.6+0.3 377.2+17.7 Only two Arrabidaea samydoides Callichlamys latifolia, shown all three...

To evaluate the antiviral activity of Bignoniaceae species occurring in state Minas Gerais, Brazil.Ethanol extracts different anatomical parts bignoniaceous plant have been evaluated vitro against human herpesvirus type 1 (HSV-1), vaccinia virus (VACV) and murine encephalomyocarditis (EMCV) by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. A total 34 from 18 selected according to ethnopharmacological taxonomic criteria were screened. Fifteen (44.1%) disclosed one or more...

The present study aimed to evaluate on Artemia salina the citotoxicity of twenty-two extracts from five species genus Lychnophora and one Lychnophoriopsis. solubilized in DMSO prepared at final concentrations 100, 250, 375, 500 600 μg mL-1 were added tubes containing nauplii (10 units each) filled 5 mL total volume with artificial salt water. Lapachol 5% used as positive negative controls, respectively. samples kept under light dead larvae counted after 24 hours contact. LC50 was calculated...

Abstract Widespread in the tropics, Cissus includes more than 300 species with great morphological diversity. Of 78 found New World, 64 grow South America. This paper investigates phylogenetic relationships within Cissus, focusing on American species, insufficiently sampled previous studies. Both plastid ( trnL intron, trnL‐F intergenic spacer, rps16 ) and nuclear ribosomal internal transcribed spacer (ITS) DNA sequences were analyzed parsimony, likelihood Bayesian inference. Divergence...

Abstract Macfadyena unguis-cati (L.) has been widely used in folk medicine as an anti-inflammatory, antimalarial and antivenereal. The purpose of this study was to chemically characterize the main plant components, evaluate biological properties some fractions derived from leaves (MACb) liana (MACa) plant. Chemical characterization allowed identification compounds corymboside, vicenin-2, quercitrin, chlorogenic acid, isochlorogenic lupeol, β-sitosterol, β-sitosterylglucoside, allantoin...