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São Paulo, Brazil

Bueno N.C.,University Estadual Do Oeste Do Paran | Prado J.F.,Federal University of Rio Grande do Sul | Meurer T.,University Estadual Do Oeste Do Paran | Bicudo C.E.D.M.,Institute Botnica
Systematic Botany

Twelve taxa of the genus Chara (Characeae, Chlorophyta) are decribed and illustrated based on specimens from southern Brazil. The taxonomic survey in the states of Paran, Santa Catarina and Rio Grande do Sul recorded seven, one, and nine species for each state, respectively. Chara guairensis was the most common species in the area, followed by C. rusbyana. The species Chara guairensis, C. martiana, C. rusbyana, Chara hydropitys, C. braunii and its varieties were recorded for the first time in Rio Grande do Sul, and the following six for Paran: C. angolensis, C. diaphana, C. guairensis, C. kenoyeri, C. martiana, and C. zeylanica. © 2011 by the American Society of Plant Taxonomists. Source

Santos-Gonalves A.P.,Federal University of Minas Gerais | Carvalho-Okano R.M.D.,Federal University of Minas Gerais | Filgueiras T.S.,Institute Botnica
Systematic Botany

Abstract A new species of woody bamboo (Poaceae: Bambusoideae), from Rio Doce State Park, Minas Gerais, Brazil, Merostachys tatianae is here described and illustrated. In its vegetative state the new species can be distinguished from all the known species in the genus by the longest internodes so far recorded for the genus (37108 cm long) as well as by the huge culm-leaves (3863.5 cm long). Both, the internodes and the culm-leaves are hispid, covered by irritating trichomes. © Copyright 2012 by the American Society of Plant Taxonomists. Source

Versieux L.M.,Federal University of Rio Grande do Norte | Vasconcellos N.,Jardim Botnico Do Rio de Janeiro | Martinelli G.,Jardim Botnico Do Rio de Janeiro | Das Graas Lapa Wanderley M.,Institute Botnica
Systematic Botany

Alcantarea pataxoana is described and illustrated. The new species is compared to Alcantarea burle-marxii, which we assume is the most morphologically similar species, as well as to A. nahoumii. The new species is the second taxon of this genus recorded for the flora of the state of Bahia, northeastern Brazil, and its differences from A. nahoumii are highlighted in an updated taxonomic key for that state. © Copyright 2012 by the American Society of Plant Taxonomists. Source

Carneiro-Torres D.S.,State University of Feira de Santana | Cordeiro I.,Institute Botnica | Giulietti A.M.,State University of Feira de Santana | Riina R.,University of Michigan
Systematic Botany

Euphorbia flaviana, a new species endemic to the State of Bahia in eastern Brazil, is described and illustrated. The new species belongs to Euphorbia [subgenus Chamaesyce] section Crossadenia and is morphologically most similar to Euphorbia teres, from which it differs in having thinner, longer, numerous verticillate branches, and involucral glands without appendages. An artificial key to all nine members of Euphorbia section Crossadenia is provided, and Euphorbia crossadenia is lectotypified. © Copyright 2012 by the American Society of Plant Taxonomists. Source

Luz C.F.P.D.,Institute Botnica | Fernandes-Salomao T.M.,University Federal Of Viosa | Lage L.G.A.,University Federal Of Viosa | Resende H.C.,University Federal Of Viosa | And 2 more authors.

Pollen samples were collected in three different periods from 11 Melipona capixaba Moure & Camargo hives and analyzed with melissopalynological methodology. A total of 33 pollen types were identified, of which 23 genera and 15 families were identified. The following families showed the highest pollen richness: Fabaceae (7), Myrtaceae (3), Solanaceae (3), Arecaceae (2), Asteraceae (2), Euphorbiaceae (2), Melastomataceae/Combretaceae (2), Rubiaceae (2), and Sapindaceae (2). The most frequent pollen types (45) were Eucalyptus, which generated great similarities between the samples, except one in which the Tibouchina was predominant. Although the majority of the pollen types showed low percentage values, the results demonstrated that M. capixaba has taken advantage of the polliniferous sources available in the Atlantic Rainforest as well as in the Capoeira (brushwood, secondary forest) and ruderal (field) plants, probably implying its importance as a pollinator of the native flora and of the exotic species. Copyright 2011 Cynthia Fernandes Pinto da Luz et al. Source

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