Alessandro Wagner Coelho Ferreira

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• Professor
• Professor (Associate) at Federal University of Maranhão

A new species of Pelexia Poit. ex Lindl. (Orchidaceae, Spiranthinae) occurring in central São Paulo, southeastern Brazil, is described and illustrated as P. vinosa A. W. C. Ferreira, M. I. S. Lima & Pansarin. Pelexia vinosa is recognized by its leaves that are present at flowering and its dark purple leaf blades with reddish margins. Inflorescences...

(Triphora uniflora A.C. Ferreira, Baptista & Pansarin (Orchidaceae: Triphoreae): a new species and the first record of the genus Triphora Nutt. for São Paulo state, Brazil). Triphora uniflora A. C. Ferreira, Baptista & Pansarin, a new species of Orchidaceae, is described and illustrated. Furthermore, this is the first report of the genus Triphora f...

A new orchid species, Vanilla paludosa, native to marshy forests close to cerrado vegetation in the state of São Paulo, Brazil, is described and illustrated. The relationship of V. paludosa to other species of the genus is discussed.

An updated checklist of the Orchidaceae from the state of Maranhão is provided. We confirmed 51 genera and 119 species, of which the most representative genera are Habenaria (17 spp.), Catasetum (14 spp.) and Epidendrum (10 spp.). Our checklist includes 30 species that are not listed in the Flora do Brasil for the state, many of which, however, hav...

• Pollination of the pantropical Vanilla has been linked to melittophily and food deception. • Here we investigated the role of flower traits on the reproduction of Neotropical Vanilla. We also studied the evolution of pollination systems in order to understand the origin of production of flower resources and the diversification of pollinators in t...

The Environmental Protection Area of Reentrâncias Maranhenses is located on the northern coast of the state of Maranhão, covering 16 municipalities and great floristic diversity. However, this biodiversity is threatened by the reduction and even extinction of species aggravated by anthropogenic action. The objectives of this study were (i) to analy...

Clusiaceae have 15 genera and approximately 800 species. In Brazil, 11 genera and 150 species are recorded, and in the State of Maranhão occurs six genera and 14 species. As part of the “Flora da Ilha de São Luís, Maranhão” project, we present the taxonomic treatment of the native Clusiaceae. To achieve this goal, we conducted field expeditions and...

Apresentamos, descrevemos e discutimos Alstroemeria maranhensis, uma nova espécie do domínio Cerrado no centro-sul do estado do Maranhão, Brasil. Também fornecemos um mapa de distribuição, fotografias e comentários taxonômicos.

We expand the geographical distribution of 10 angiosperm species in Maranhão and Tocantins states. The species were collected during two field expeditions carried out by the Territorial Action Plan for the conservation of endangered species of the Meio Norte Territory between September 20 and 30, 2022 and between July 24 and 30, 2023, in both state...

Os levantamentos florísticos, realizados em vários campi universitários no Brasil, geralmente são focados em espécies arbóreas ou arbustivas, com pouca ou nenhuma citação para Orchidaceae. O objetivo desta pesquisa foi estudar as Orchidaceae ocorrentes na Universidade Federal do Maranhão (UFMA), campus Dom Delgado, São Luís, Maranhão, incluindo inf...

We present a key to identify and an annotated list of lycophytes and ferns of the Immediate Geographical Region of São Luís, Maranhão State, which has ecotonal characteristics of Amazonian Forest, Cerrado, and Coastal Vegetation. Specimens were collected monthly between April 2020 and September 2022 in the 13 municipalities of this region. A total...

Com o acesso facilitado à tecnologia por meio de aparelhos portáteis como câmeras digitais, telefones celulares e outros, os "cidadãos cientistas" encontram-se devidamente preparados para coletar e distribuir um grande número de dados, especialmente em regiões mais remotas do país. O registro da distribuição das espécies vem sendo facilitado por ap...

This work is a floristic study of Selaginella in Maranhão. The species survey is based on collections from fieldwork conducted between April 2006 and February 2023 and specimens from Maranhão deposited at the CCAA, HBRA, MG, and SLUI herbaria. Ten species were identified: Selaginella conduplicata, S. convoluta, S. erythropus, S. flagellata, S. gyno...

The São Luís Island, Maranhão State, is an ecotonal region, a mix of humid forest, cocais forest, dune vegetation, restingas and mangroves. Unlike the interior of the State, their coastal areas have a gap in knowledge of the Passifloraceae. Here, through field expeditions and herbaria visit, we provide a taxonomic treatment, identification key and...

Floristic similarity studies make it possible to compare species richness between different phytophysiognomies and to assess whether species are typical of a phytophysiognomies or if they are common to two or more phytophysiognomies. The Immediate Geographic Region of São Luís (IGR), in the central region of northern Maranhão, is characterized by t...

Apesar do potencial ornamental, as plantas nativas do Brasil não são devidamente aproveitadas quanto às suas possibilidades de uso e esse aspecto fica evidente no paisagismo das cidades brasileiras, onde mais de 50% das espécies utilizadas são exóticas. Visando ampliar o uso de plantas nativas e naturalizadas no Brasil e valorizar a diversidade da...

Turnera carolina , a new species from Chapada das Mesas region in the Brazilian Cerrado, is described and illustrated. The new taxon can be characterized by having internodes up to 5 cm long, leaves with dark spots on both sides, petals that are smaller than the sepals, bracts and calyx that are usually reddish, and an orange corolla. We also prese...

The Trichocentrum cepula complex comprises three species, T. caatingaense, T. cepula and T. sprucei, endemic to tropical forests east of the Andes in South America. The delimitation of these species has been diversely interpreted due to the extensive morphological variation in the complex. We applied an integrative approach to achieve a better unde...

This study provides an inventory of the Orchidaceae in one of the most threatened areas of the Brazilian Amazon, situated in the eastern portion of the Belém Endemism Center. A total of 51 species, distributed in 24 genera, are recorded. Epiphytes represent 86% of the species, the remaining are terricolous (6%), hemiepiphytic (6%) or myco-heterotro...

We report the first record of Hippeastrum puniceum (Lam.) Kuntze in Maranhão and expand the known geographical distributions of Alophia drummondii (Graham) R. Foster and Rapatea paludosa Aubl. in that state. Alophia drummondii and Hippeastrum puniceum were collected in Cerrado fragments in the municipality of Caxias and Rapatea paludosa in a swamp-...

We report the first occurrence of Encyclia gonzalezii L.C. Menezes (Orchidaceae) from the state of Maranhão and the Northeast Region of Brazil. The species was collected in the Cerrado domain in Estreito, Maranhão. We present a map of the collection site, a morphological description, photographs, ecological comments, a provisional conservation asse...

O Maranhão é um estado brasileiro caracterizado pelo aspecto ecotonal entre os domínios da Amazônia e do Cerrado. O objetivo dessa pesquisa foi relatar a primeira ocorrência de Tillandsia paraensis no domínio do Cerrado Maranhense e ampliar sua distribuição geográfica no Maranhão. O trabalho foi baseado a partir de coletas de campo. A identificação...

O gênero Catasetum é um grupo complexo e pouco se conhece sobre a composição anatômica de suas folhas e raízes. O presente estudo objetivou descrever e comparar anatomicamente a estrutura foliar e radicular de sete espécies e contribuir com o conhecimento anatômico e taxonômico das espécies incluídas na subtribo Catasetinae. As amostras foram fixad...

The Brazilian state of Maranhão is located in a transition zone between the Amazon and Cerrado domains; its geographic position enables the coexistence of species from both biomes. Taxonomic information of Orchidaceae and especially Epidendrum in the state are scarce; thus this study aimed to provide a taxonomic treatment for the genus based on fie...

The eastern portion of the state of Maranhão is a transitional area between Amazon Rainforest, Cerrado and Caatinga. Knowledge about the flora of this region is very poor, especially regarding Orchidaceae. The aim of this study was to provide a survey of the species of this family in the central area of this region. Fieldwork was performed monthly...

Geonoma is one of the more diverse genera of palms in the neotropical region, which comprises 68 species distributed from southern Mexico to south-western Brazil. In Maranhão, a Brazilian state located in a transition area between the Eastern Amazon, the Cerrado, and the Caatinga, the knowledge about this genus still is deficient. For this reason,...

Phenakospermum guyannense is the only native species of Strelitziaceae in South America and occurs in the Amazon domain in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela. The species presents a negative sampling bias, probably due to the great effort necessary to collect it, as it presents long leaves and co...

We report three species of Bromeliaceae (Encholirium spectabile Mart. ex Schult. & Schult.f., Pitcairnia burchellii Mez, and Tillandsia bulbosa Hook.) for the first time from Maranhão, northeastern Brazil, based on our fieldwork. Data on species' morphology, taxonomy, ecology, and geographic distribution are included. Our new data add to the knowle...

We confirm the occurrence of Vanilla hartii Rolfe in Brazil. This species was collected in FLONA Carajás, Amazonia, at the municipality of Parauapebas, state of Pará. This work contributes to the knowledge of the geographical distribution of this rare vanilla.

This work is an inventory of ferns and lycophytes of remnants in Amazônia Maranhense. The data provided are the results of collections made from 2010-2011 and 2016-2019 in various municipalities of Maranhão in the Amazonian part of the state. Sixty-four species of ferns and lycophytes, in 36 genera and 18 families, were recorded. Of these, 24 speci...

Up until now, three species of Liparis were recognized in Brazil. During floristic surveys of the orchid family in Brazil, populations of a Liparis species occurring in marshy areas were found. Based on our investigations we conclude that it is the rare L. inundata, a taxon currently considered to be a synonym of L. nervosa. Morphological, phenolog...

We present here the rediscovery of Passiflora auriculata Kunth and P. cisnana Harms in Maranhão state, northeastern Brazil, and new reports of occurrence of those species in Alagoas state, northeastern Brazil, and Tocantins state, northern Brazil. We provide taxonomic information, distribution maps, and conservation status of both species, thereby...

This study presents the first records for Maranhão state, northeastern Brazil, of the duckweeds Lemna valdiviana Phil., Wolffia brasiliensis Wedd. and Wolffiella lingulata (Hegelm.) Hegelm. The species were collected in a survey of water bodies in the muncipalities of Caxias, Igarapé do Meio and São João do Sóter. Descriptions, illustrations, maps,...

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 th...

PREMISE Cryptic sympatric speciation occurs when closely related species arises with no geographic or spatial isolation. Since cryptic species can not usually be detected when investigations are based exclusively on classical plant taxonomy, molecular markers and integrative taxonomy are important tools to elucidate the identity of cryptic taxa. M...

Expansion of the geographic distribution of Rapatea paludosa Aubl. (Rapateaceae) to the state of Maranhão, northeastern Brazil. The occurrence of R. paludosa is reported for the flora of Maranhão from the municipality of Cândido Mendes. This is the second species of the genus found in the state. The collected samples are also the second record of R...

As coleções científicas servem como material didático no ensino de Ciências Naturais e são de grande importância no espaço acadêmico. Entre tais coleções, estão os acervos botânicos, que além de serem fiéis depositários de amostras vegetais provenientes de pesquisas científicas, podem subsidiar o processo de ensino-aprendizagem nos diferentes nívei...

We report the first records of Tillandsia kegeliana, T. loliacea, T. paraensis, T. parvispica, T. recurvata , and T. tenuifolia for Maranhão, Brazil. These species were collected in the Amazonian and Cerrado biomes. This work adds new knowledge to the flora of Maranhão and extends the distribution of these species within Brazil.

We report the first record of Voyria caerulea from the state of Maranhão, northeastern Brazil. A fertile specimen was collected in a gallery forest during the rainy season, within the boundaries of the municipality of São Raimundo das Mangabeiras. This find contributes to the knowledge on the micoheterotrophic flora of Maranhão and expands the geog...

Members of Oncidiinae are widely known for their interactions with oil-collecting bees that explore lipophilic secretions on flowers. They may also be pollinated through food deception and the offering of nectar. Although data on breeding systems are available for many Oncidiinae orchids, little is known about the reproductive strategies in Rodrigu...

Dyckia racemosa is a Bromeliaceae species known from only three collections near Serra Geral, Central Brazil. In this study, the area of occurrence of the species is reported to extend to a Cerrado area in Maranhão state, northeastern Brazil. Digital collections from Brazilian and international herbaria were consulted. The species original descript...

This study is the first record of the exotic fern species of Pteris tripartita Sw. (Pteridaceae) for the Maranhão state, northeastern Brazil. Here we present a description of the species, based on examined material and comments about its geographical distribution in the world and Brazilian states. Our data increases the knowledge of the number of c...

Vegetation is fundamental and indispensable for the cities, for the innumerable benefits that they offer, improving the quality of life of the urban centers’ populations. This study aims to present an inventory of the plant species present in squares and avenues of the municipality of Aldeias Altas - MA. Data were obtained through visits to the mun...

We present here the first records of Vanilla bahiana and Vanilla pompona from Maranhão state, northeastern Brazil. Both species were collected in a gallery forest, in areas of Cerrado vegetation at Caxias municipality. This work contributes with knowledge on the geographical distribution of the species in northeastern Brazil.

TRADITIONAL KNOWLEDGE AND USE OF TIMBER SPECIES AND MEDICINAL USED IN THE MUNICIPALITY ALDEIAS ALTAS, MARANHÃO, BRASIL. ABSTRACT: This paper aimed to inventory the plants ethnobotanical survey of medicinal plants, timber used in the municipality of Aldeias Altas-MA. The data were obtained through semi-structured interviews, beyond conversations wit...

This study reports the first record of Passiflora pedata L. (Passifloraceae) from the state of Maranhão and from the Northeast Region of Brazil. The species was collected in the municipality of Buriticupu, which is located in a remnant of Amazon Forest in western Maranhão. This work adds to the knowledge of the flora of Maranhão and the distributio...

Spiranthinae orchids are known for being self-compatible and offering nectar as a reward. Although data on their pollinators are scarce, members of this tribe are mostly pollinated by bees, hummingbirds and moths. Some of them even reproduce through facultative self-pollination. Nothing is known about the pollinators and reproduction system in Pter...

Keywords/Mots-clés/Palavras-chave: Anathallis, mesophytic semideciduous forests/forêts mésophiles semi-pérennes/florestas mesofíticas semidecíduas, new occurrence/nouvel enregistrement/nova ocorrência. Abstract The species Anathallis marginata (Barbosa Rodrigues) F.Barros & Barberena is recorded for the first time from the state of São Paulo, Brazi...

Baptistonia pubes is an epiphyte that grows in Brazilian Atlantic Forest, in Paraguay and northern Argentina. It is considered vulnerable and threatened with extinction. Our aim was to verify seed germination efficiency and growth at two pHs, using two culture mediums: Murashige-Skoog (modified - (MS)) and banana pulp with added NPK 20-20-20 (Plant...

Morphological variation in lip of Baskervilla paranaensis in the central region of São Paulo, Brazil. Generally species Baskervilla have lip with the lateral lobes turned inward. In this research shows is a morphological variation in the lip on Baskervilla paranaensis, in which the lateral lobes of all the flowers of an inflorescence are facing out...

Resumo Este estudo apresenta o levantamento florístico de Orchidaceae ocorrentes em 125 fragmentos florestais de 23 municípios da região central do estado de São Paulo. Foram identificadas 218 espécies distribuídas em 96 gêneros. Os indivíduos coletados em estado vegetativo foram mantidos em casa de vegetação até a ocorrência de floração. A maioria...

Species interactions have been recently depicted as networks, in which each species is connected to one or more other species in binary interaction matrices. Forty networks of epiphytic orchid and host tree species were assessed in Brazilian gallery forests. The nestedness of the networks was estimated with the NODF index and the significance was t...