Occurrence of Mormolyca cleistogama (Maxillarinae, Orchidaceae) in São Paulo state, Brazil

Marcusso, Gabriel Mendes; Parra‐Sanchez, Edicson; Morais, Rodrigo Ferreira de

doi:10.1590/2175-7860201869248

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…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).…”

Section: Methodsmentioning

confidence: 99%

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

Ferreira¹,

Oliveira²,

Engels³

et al. 2019

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The distribution of Maxillaria aureoglobula is expanded to northeastern Brazil. This species is probably more geographically widespread than expected, and the new record reported here is a geographical link between the other occurrences of this species in northwestern South America (Colombia and Venezuela) and a recent record from Mato Grosso in the Brazilian Central-West Region. We provide an expanded description of the species, a distribution map, and a key to the Brazilian species of Maxillaria sect. Rufescens.

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Section: Methodsmentioning

confidence: 99%

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

Ferreira¹,

Oliveira²,

Engels³

et al. 2019

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“…In Brazil, M. sect Rufescens is represented by three native species: M. aureoglobula Christenson (2002b, p. 125) (Brazil west-central and northwest of South America); M. cleistogama Brieger and Illg in Illg (1977, p. 247) (Bolivia, Brazil, Peru and Venezuela), and M. rufescens Lindley (1836Lindley ( , t. 1848) (widespread in South and Central America) (Engels and Ferneda Rocha 2016, Marcusso et al 2018, Ferreira et al 2019, Meneguzzo et al 2020, , POWO 2022. The present study describes a fourth species from the oriental Brazilian Amazon.…”

Section: Introductionmentioning

confidence: 99%

Maxillaria luizotavioi (Orchidaceae: Maxillariinae): a new species from the Oriental Brazilian Amazon

Engels

Smidt

2023

Nordic Journal of Botany

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We describe and illustrate Maxillaria luizotavioi, a new orchid species from the Brazilian Amazon belonging to Maxillaria sect. Rufescens. The new species can be distinguished from Maxillaria cruentata from Colombia, the morphologically most similar species, by having pale yellow sepals and petals, lanceolate lateral sepals and dark vinous lip with rounded to obtuse apex. Additionally, we provide an identification key to the species of the section that occurs in Brazil.

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Labellar secretion and secretory trichomes of Rhetinantha cerifera (Barb. Rodr.) M.A.Blanco (Orchidaceae, Maxillariinae): micromorphology and composition

Mazzoni-Viveiros

Salatino

et al. 2019

Braz. J. Bot

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The structure and composition of the labellar secretory trichomes of Rhetinantha cerifera (Barb. Rodr.) M.A.Blanco were analyzed by scanning electron and light microscopy, as well as histochemistry and chemistry. Histological analyses revealed that the chlorophyllated and dry callus at the basal region of labellum is non-secretory. The white sticky secretion is produced by unicellular secretory trichomes (not papillae), occupying the V-shaped ridge at the apical and median regions of the labellum, and the central portion of the labellar adaxial base, behind the callus. Chemical analyses of dichloromethane extracts of the secretion detected several long carbon chain constituents common in plant waxes (n-alkanes, carboxylic acids, alcohols, esters) and phytosteroids, predominantly cycloartenol derivatives. Histochemical tests showed that the secretion contains terpenoids (oleoresin), free fatty acids, phenolic compounds (including flavonoids), and polysaccharides (mainly mucilage); the results were negative for alkaloids. The secretory unicellular trichomes can concomitantly activate different metabolic pathways, and the exudate should be characterized as "heterogeneous mixtures," consisting of lipophilic and hydrophilic compounds. Therefore, the labellar secretion is chemically more complex than plant waxes composition. The specific epithet cerifera is thus misleading, and previously reported interpretations regarding the secretion are equivocated. Based on the present results and those from the literature, it is suggested that R. cerifera and R. notylioglossa (Rchb.f.) M.A.Blanco are taxonomical entities that should be merged into a single species, as has been suggested in Flora Brasil 2020 under construction.

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Occurrence of Mormolyca cleistogama (Maxillarinae, Orchidaceae) in São Paulo state, Brazil

Cited by 3 publications

References 7 publications

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

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

Maxillaria luizotavioi (Orchidaceae: Maxillariinae): a new species from the Oriental Brazilian Amazon

Labellar secretion and secretory trichomes of Rhetinantha cerifera (Barb. Rodr.) M.A.Blanco (Orchidaceae, Maxillariinae): micromorphology and composition

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Occurrence of Mormolyca cleistogama (Maxillarinae, Orchidaceae) in São Paulo state, Brazil

Cited by 3 publications

References 7 publications

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

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

Maxillaria luizotavioi (Orchidaceae: Maxillariinae): a new species from the Oriental Brazilian Amazon

Labellar secretion and secretory trichomes of Rhetinantha cerifera (Barb. Rodr.) M.A.Blanco (Orchidaceae, Maxillariinae): micromorphology and composition

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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

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