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Curitiba, Brazil

Brotto M.L.,Museu Botanico Municipal | Cervi A.C.,Federal University of Parana | Dos Santos E.P.,Federal University of Parana

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. Source

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

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. Source

Heiden G.,University of Sao Paulo | Ribas O.S.,Museu Botanico Municipal

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. Source

Morales M.,CONICET | Morales M.,University of Moron | Santos-Silva J.,University of Campinas | Santos-Silva J.,Bahia State University | Ribas O.S.,Museu Botanico Municipal

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. Source

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

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. Source

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