Lemnoideae (Araceae) no estado do Paraná, Brasil

Abstract

ResumoLemnoideae são consideradas as menores Angiospermas, sendo Wolffia o gênero com o menor tamanho de fronde e flores. São plantas de difícil interpretação morfológica e os termos utilizados para descrição são, em parte, diferentes dos usados para outras plantas. AbstractLemnoideae are the smallest Angiosperms, Wolffia is the genus with smallest fronds and flowers. Morphological interpretations are difficult and terms used for description are slightly different from those used for other plants. A survey of Lemnoideae was carried out in Paraná between July 2013 and September 2014, the specimens collected were identified and prepared according to special herborization techniques and deposited at UPCB and UNOP herbaria. Six species were found: Landoltia punctata, Lemna minuta, Lemna valdiviana, Spirodela intermedia, Wolffia brasiliensis and Wolffiella oblonga. Typically found in lentic environments, sewage ditches and creeks of the river, in Paraná they have been collected in Tropical Rainforest, Araucaria Forest, semideciduous forest and cerrado remnants.

New occurrences of small aquatic duckweeds (Araceae, Lemnoideae) in Maranhão state, northeastern Brazil

“…There are also records from two African countries: Tanzania and South Africa (Tropicos 2019 Wolffiella lingulata is distributed in subtropical (with mild winters) and tropical areas of the Americas: United States, Mexico, Panama, Bolivia, Brazil, Argentina, and Uruguay (Tropicos 2019). In Maranhão a single species is found, W. lingulata, which has previously confirmed records in the major Brazilian regions of the North (Amazonas, Pará), Northeast (Bahia, Pernambuco and Piauí), Central-West (Mato Grosso and Mato Grosso do Sul), Southeast (Rio de Janeiro), and South (Pott 2002;Pereira et al 2016;Flora do Brasil 2019). In Maranhão, the species was found in the municipality of Igarapé do Meio, floating on the banks of the Igarapé Puraquéu, a tributary of the Rio Mearim (Correia Filho et al 2011).…”

“…This genus is distributed in North America (USA), Central America (Guatemala, Honduras and Mexico), South America (Brazil), and Asia (China) (Pott 2002;Tropicos 2019 (Landolt, 1986;Tropicos 2019). In Brazil, there are confirmed records of this species in the following major regions: North (Amazonas), Northeast (Bahia, Ceará, Paraíba, Pernambuco and Piauí), Central-West (Mato Grosso and Mato Grosso do Sul), South (Paraná, Rio Grande do Sul and Santa Catarina), and Southeast (Espírito Santo, Rio de Janeiro and São Paulo) (Pott 2002;Pereira et al 2016;BFG 2018). In Maranhão state, the species was found in the municipality of Igarapé do Meio, floating by the banks of a bridge over the Puraquéu Igarapé, a tributary of the Rio Mearim that drains the area of the town of Igarapé do Meio (Correia Filho et al 2011).…”

“…The average annual temperature varies between 22 and 27 °C and average annual rainfall varies between 800 and 2,800 mm (IMESC 2008). The dry period varies from five to six months, from June to November/ December, when the water deficit reaches 150-300 mm (Golfari 1980;Jesus et al 1986), with the driest period between July and October and the highest concentration Species identifications were carried out with the aid of a binocular stereomicroscope Stemi DV4 ZEISS ® and specialized literature (Hegelmaier 1878;Landolt 1986;Pott and Cervi 1999;Pott 2002;Andrade et al 2013;Pereira et al 2016;Freitas et al 2017;Coelho 2018;Lourenço and Bove 2019) and also by comparison with herbarium specimens identified and deposited in the herbaria of NY, K, RB, MO, and BHCB (acronyms according to Thiers 2019). The names of the authors follow Brummitt and Powell (1992).…”

PHYTOREMEDIATION OF FLUORIDE-CONTAMINATED WATER BY Landoltia punctata

“…According to Pereira et al (2016), Landoltia punctata is "a small angiosperm, with floating fronds, ovate to lanceolate, flattened, slightly asymmetrical at the base, with green color, smooth edge, usually purplish red". The species has a fast growth rate and the capacity to develop in wastewater, thus being a candidate for the phytoremediation processes (Stegemeier et al, 2017).…”

Flora do Rio de Janeiro: Lemnoideae (Araceae)

“…No Brasil são escassos estudos específicos para o grupo, destaque para os trabalhos de Pott & Cervi (1999) no Pantanal; Bezerra & França (1999) no Nordeste; Pott (2002) no Sudeste e Pereira et al (2016) no Sul. No estado de São Paulo foram registradas dez espécies (Pott 2002); no Rio de Janeiro, Landolt (1986) citou nove espécies, Sá (1992) apontou a ocorrência de Wolffiella neotropica Landolt na restinga de Saquarema.…”