Flora do Rio de Janeiro: Nymphaeaceae

Abstract

ResumoO presente estudo tem como objetivo contribuir para o conhecimento das espécies de Nymphaeaceae ocorrentes no estado do Rio de Janeiro. O trabalho tem por base a análise morfológica de materiais depositados em herbários e coletas de campo, além da compilação de dados de literatura. Foram registrados um gênero e seis espécies: Nymphaea amazonum, Nymphaea caerulea, Nymphaea lasiophylla, Nymphaea lingulata, Nymphaea pulchella, Nymphaea rudgeana, das quais Nymphaea lasiophylla é citada pela primeira vez no Rio de Janeiro. Chave para identificação, descrições, ilustrações, dados sobre hábitat, fenologia e distribuição geográfica das espécies são apresentados. Palavras-chave: Nymphaea, florística, planta aquática, taxonomia. AbstractThis study focuses on the Nymphaeaceae found in the state of Rio de Janeiro. It is based on a morphological analysis of herbaria collections, as well as on a review of the relevant literature and on collections in the field. A total of one genus and six species were recorded for the state: Nymphaea amazonum, Nymphaea caerulea, Nymphaea lasiophylla, Nymphaea lingulata, Nymphaea pulchella, Nymphaea rudgeana, of which Nymphaea lasiophylla is new record for Rio de Janeiro. An identification key, descriptions, illustrations, habitat data, phenology, and species distribution are also provided.

Structure and floristics of the plant community in Lagoa do São Bento, Maricá, Rio de Janeiro state, Brazil

“…This species was reported for the state of São Paulo (Amaral et al 2008), Roraima (Pinheiro & Jardim 2015) and recorded in two studies carried out in the state of Minas Gerais by Pivari et al (2011) and Tavares-Silva et al (2018) in the lacustrine system of Vale do Rio Doce and in the Botanical Garden of Juiz de Fora, respectively. In the state of Rio de Janeiro there are records of collections of this species for the municipalities of Cachoeiras de Macacu, Campos dos Goytacazes, Itatiaia, Macaé, Magé and Vassouras (Moreira & Bove 2017). In Lagoa do São Bento there is a report that it was introduced between the 1980s and 1990s, when there was an attempt to transform the lagoon into a balneary.…”

“…It is similar to Nymphaea pulchella, which also occurs in this wetland and also has a daytime floral anthesis, with N. caerulea being differentiated by the lilac-bluish coloration on the apex of the petals and leaves with margins from entire to slightly crenate. Nymphaea pulchella presents white petals and irregularly jagged leaves (Moreira & Bove 2017).…”