Orchidaceae em um fragmento de Floresta Semidecídua de encosta na região sul do Estado do Espírito Santo, Sudeste do Brasil

Abstract

-(Orchidaceae in a fragment of semideciduous slope forest in the southern Espírito Santo State, Southeastern Brazil). The present study aimed to inventory and elaborate descriptions and illustrations for the species of Orchidaceae found in a forest located in the southern Espírito Santo State, a region of few botanical studies, featuring a poorly known flora. During the study, 25 species were found and distributed into 21 genera. The majority of the species were epiphytic, represented by 16 species, followed by rupiculous, terrestrial, and mycoheterotrofic species. Most species flourished during the hot and humid period. Furthermore, the study revealed the presence of an endemic species and three new records for the State. Keywords: Atlantic Forest, conservation, orchids, taxonomy RESUMO -(Orchidaceae em um fragmento de Floresta Semidecídua de encosta na região sul do Estado do Espírito Santo, Sudeste do Brasil). O presente trabalho teve como objetivo inventariar e elaborar descrições e ilustrações para as espécies de Orchidaceae encontradas em um fragmento de Floresta Semidecídua localizado no sul do Estado do Espírito Santo, região de poucos estudos, caracterizando uma flora ainda pouco conhecida. Durante o estudo, 25 espécies distribuídas em 21 gêneros, foram registradas. A forma de vida predominante foi a epifítica, caracterizada por 16 espécies, seguida pela rupícola, terrícola e micoheterotrófica. A maior parte das espécies floresceu no período quente e úmido. Além disso, o estudo revelou a presença de uma espécie endêmica e três novas ocorrências para o Estado.

Survey of Orchidaceae species of Serra das Cabeças, in Parque Estadual da Serra do Brigadeiro, Araponga-MG, Brazil

“…as terrestrials, which is similar to the statistics reported by Dressler (1981) in which about 25% of the orchid species are exclusively terrestrials. This result is similar to that of Krahl et al (2014), who studied the semideciduous forest of South part of Espírito Santo State, finding values of 22.22% of terrestrial orchids. In this study, the authors recorded a total of 22 species; of all these, twelve were in an altitude-field vegetation, which can be related to the lower vegetative competition index for this kind of vegetation, due to the lowest occurrence of plant species.…”

Germination and initial development in vitro, and acclimatization of Oeceoclades maculata (Orchidaceae), aiming at its reintroduction in natural environments

“…Its establishment in various regions seems to be closely related to light availability and stomatal density since, although it is a species well adapted to disturbed or undisturbed soils, it exhibits a combination and convergence of anatomical characteristics of its different organs that allow for its adaptation to environments with high light intensities as well as to those that are humid and shady (Riverón-Giró et al, 2017). Such adaptability has been demonstrated by Rahal, Souza-Leal, and Pedroso-de-Moraes (2015), who reported the occurrence of O. maculata in areas of high light intensities in Araras, São Paulo State, Brazil, whereas, on the other hand, Krahl, Cogo, and Valsko (2014) found a well-established population of this species in a shady area of a semi-deciduous forest in the State of Espírito Santo, Brazil, blooming from January through March. In the present study flowering was also observed in this period.…”

Found in Brazil again! Expanding the distribution of Maxillaria aureoglobula Christenson (Orchidaceae, Maxillariinae) and a key to the species of Maxillaria sect. Rufescens Christenson from Brazil

“…For species identification and description, we used the relevant literature for M. sect. Rufescens (Illg 1977;Christenson 2002;Bogarín and Pupulin 2010;Krahl et al 2014;Arévalo et al 2015;Engels and Ferneda-Rocha 2016;Marcusso et al 2018). The names of the authors and abbreviations follow Brummitt and Powell (1992).…”