Museu Botanico Municipal

Curitiba, Brazil

Museu Botanico Municipal

Curitiba, Brazil
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Morales M.,CONICET | Morales M.,University of Morón | Santos-Silva J.,University of Campinas | Santos-Silva J.,Bahia State University | Ribas O.S.,Museu Botanico Municipal
Brittonia | Year: 2013

A new species of Mimosa section Mimosa, Mimosa eurystegia, which is apparently endemic to Paraná in southern Brazil, is described and illustrated. This species is distinguished by plurinerved leaflets and papyraceous, plurinerved, orbicular, amplexicaul stipules. Morphological distinctiveness of this new Mimosa and its relationships with allied species are discussed. Phenological, geographical and ecological data are presented, in addition to a key to the species of Mimosa subser. Sparsae. © 2012 The New York Botanical Garden.

Brotto M.L.,Museu Botanico Municipal | Cervi A.C.,Federal University of Paraná | Dos Santos E.P.,Federal University of Paraná
Rodriguesia | Year: 2013

This work presents a taxonomic study of species of Ocotea (Aubl.) in Parana state, southern Brazil. Identification key, descriptions, illustrations and comments that include geographic distribution, habitat, conservation status and time of flowering and fruiting are provided. The study confirmed 31 species of Ocotea in Parana state. The Atlantic Forest has the largest number of species (26) of which eleven are endemic, followed by Araucaria Forest (14) with one endemic, Semideciduous Seasonal Forest (11), Savannah (7) with two endemic and Fields (1). Two species are at risk of local extinction. Ocotea daphnifolia (Meisn.) Mez and Ocotea velutina (Nees) Rohwer are first mentioned in Parana.

Riva D.,Federal University of Paraná | Barison A.,Federal University of Paraná | Stefanello M.E.A.,Federal University of Paraná | Poliquesi C.B.,Museu Botanico Municipal | And 3 more authors.
Quimica Nova | Year: 2012

Activity guided fractionation of Sinningia allagophylla (Mart.) Wiehler ethanolic extract yielded a new benzochromene 8-methoxylapachenol, besides seven known compounds: lapachenol, sitosteryl oleate, sitosteryl linoleate, stigmasteryl oleate, stigmasteryl linoleate, dunniol and tectoquinone. Extract, fractions, and compounds lapachenol, 8-methoxylapachenol, and dunniol were tested in vitro against human cancer cell lines U251 (glioma, CNS), MCF-7 (breast), NCI-ADR/RES (drug-resistant ovarian), 786-0 (kidney), NCI-H460 (lung, no small cells), PC-3 (prostate), OVCAR-3 (ovarian), HT-29 (colon), K562 (leukemia) and against VERO, a normal cell line. The most active compound was dunniol, which inhibited the growth of U251, MCF-7, NCI-ADR/RES, OVCAR-3 and K562 cell lines.

Heiden G.,University of Sao Paulo | Ribas O.S.,Museu Botanico Municipal
Phytotaxa | Year: 2012

Baccharis umbellata, a new species of Paraná State, southern Brazil, is described. The new species, belonging to subgen. Baccharis sect. Agglomeratae, is easily recognized by the pedunculate heads arranged in an umbel-like capitulescence. Baccharis umbellata is a narrow endemic of the peaks of the southern range of Serra do Mar. It is morphologically most similar to the allopatric species B. platypoda, which mainly inhabits mountain summits in western and eastern South America. Illustrations, a distribution map, habitat information, and a conservation assessment are also provided for the new species. © 2012 Magnolia Press.

Verdan M.H.,Federal University of Paraná | Barison A.,Federal University of Paraná | Lemos De Sa E.,Federal University of Paraná | Salvador M.J.,University of Campinas | And 3 more authors.
Journal of Natural Products | Year: 2010

Three new aromatic ε-lactones, aggregatins A (1), B (2), and C (3), a new naphthoquinone derivative, aggregatin D (4), and three known anthraquinones, 2-methylanthraquinone, 7-methoxy-2-methylanthraquinone, and 7-hydroxy-2-methylanthraquinone, were isolated from the tubers of Sinningia aggregata (Gesneriaceae). Compounds 1 and 4 and the anthraquinones showed marginal antimicrobial activity. © 2010 The American Chemical Society and American Society of Pharmacognosy.

Morales M.,Instituto Nacional de Tecnologia Agropecuaria | Morales M.,CONICET | Morales M.,University of Morón | Ribas O.S.,Museu Botanico Municipal | And 3 more authors.
Boletin de la Sociedad Argentina de Botanica | Year: 2015

Five species of Mimosa for the Brazilian Flora are reported: M. strigillosa, M. leimonias, M. petraea, M. oligophylla, and M. barnebiana. The three first ones are registered from Mato Grosso do Sul, while the remainder are registered from Paraná and Rio Grande do Sul. Descriptions, illustrations, distribution maps and morphologic, geographic and ecological comments are included. Original descriptions of M. petraea and M. leimonias are expanded, including fruit characterization.

Morales M.,CONICET | Morales M.,University of Morón | Ribas O.S.,Museu Botanico Municipal | Santos-Silva J.,University of Campinas
Systematic Botany | Year: 2012

Mimosa tucumensis (Leguminosae), a new species from M. sect. Mimosa ser. Mimosa subser. Mimosa is described and illustrated. This taxon is found in southern Brazil (Paran State), in "campos de altitude," an environment different from the typical habitat of other entities in this subseries. Mimosa tucumensis is morphologically close to M. debilis, M. velloziana, and M. sensibilis, but differs from these principally by the presence of humifuse stems with adventitious roots, considerably longer petioles and peduncles, and foliar venation. In addition, cytological characterization of this new taxon is provided and discussed in relation to the nearest species. This taxon appears to be narrowly restricted to grasslands on a handful of closely adjacent peaks in the Paran State adding to the notable endemism of this area. On the basis of morphological, cytological, and geographical data, some evolutionary considerations are inferred. © Copyright 2012 by the American Society of Plant Taxonomists.

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