Carolyn Elinore Barnes Proença

University of Brasília | UnB · Department of Botany

Myrcianthes is a New World genus of Myrtaceae (Tribe Myrteae) with 38 currently accepted species that was monographed in 1992. This paper proposes a new species, Myrcianthes cruciata from Northeastern Brazil (Bahia, Ceará and Sergipe), the synonymization of M. cavalcantei under M. fragrans and the lectotypification of the former name. Myrcianthes c...

Stingless bees are major flower visitors in the tropics, but their foraging preferences and behavior are still poorly understood. Studying stingless bee interactions with angiosperms is methodologically challenging due to the high tropical plant diversity and inaccessibility of upper canopy flowers in forested habitats. Pollen DNA metabarcoding off...

Stingless bees are major flower visitors in the tropics, but their foraging preferences and behavior are still poorly understood. Studying stingless bee interactions with angiosperms is methodologically challenging due to the high tropical plant diversity and inaccessibility of upper canopy flowers in forested habitats. Pollen DNA metabarcoding off...

Although drosophilids have been extensively studied in laboratories worldwide, their ecology is still relatively poorly understood. This is unfortunate because some species are currently expanding their geographic distribution and infesting fruit crops. Here, we investigated the relationship between drosophilids and potential plant hosts in a comme...

The genus Mitranthes (Myrteae, Myrtaceae) was described with five species, but no indication of a generic type. These five species are now known to belong to the independent generic lineages Psidium and Myrcia of the tribe Myrteae. This paper traces the taxonomic and nomenclatural history of Mitranthes , showing that the most appropriate type speci...

The South American genus Praxelis Cass. (Asteraceae, Eupatorieae) includes 18 species and is the second-largest genus of subtribe Praxelinae. It is distributed from Colombia, Venezuela and the Guianas, to central Argentina, southern Brazil and north-western Uruguay. Over the past 40years, one species, P. clematidea , has invaded several countries a...

Melastomataceae é uma das famílias mais representativas do Cerrado, apresentando 33 gêneros e 513 espécies no bioma. A última listagem publicada de Melastomataceae para o Distrito Federal (DF) apontava 19 gêneros e 87 espécies, e foi elaborada para nortear o projeto Flora do Distrito Federal em 2001. Desde então, novos estudos moleculares trouxeram...

The South American genus Praxelis Cass. (Asteraceae, Eupatorieae) includes 18 species and is the second-largest genus of subtribe Praxelinae. It is distributed from Colombia, Venezuela and the Guianas, to central Argentina, southern Brazil and north-western Uruguay. Over the past 40 years, one species, P. clematidea, has invaded several countries a...

This work aimed to analyze the chemical composition of the essential oils from Psidium laruotteanum Cambess. (Marangaba-peluda), Psidium salutare (Kunth) O. Berg (Marangaba-vermelha) and Psidium sobralianum Landrum & Proença (Araçá-de-veado), and to investigate their antibacterial and antioxidant activities. Twenty-six chemical compounds were ident...

In the present work we estimate the amount of aerial plant biomass (AGB) remaining in Bolivia, and we model its spatial distribution (pixel resolution: 100 m), evaluating the prediction efficiency and uncertainty. The modeling was performed by comparing data from field inventories (504 plots) and spectral environmental variables [selected under cor...

Two new species of Eriocaulon (Eriocaulaceae) from the Brazilian Cerrado are described and illustrated. Eriocaulon benedictum , found in the Tocantins River Basin and Plate River Basin has a vegetative morphology similar to Eriocaulon aquatile and E. modestum due to the submerged life form with submerged leaves and long scapes surpassing the water...

The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...

Background and Aims Psidium is the 4th largest genus of Myrtaceae in the Neotropics. Psidium guajava is widely cultivated in the tropics for its edible fruit. It is commercially under threat due to the disease guava decline. P. cattleyanum is one of the 100 most invasive organisms in the world. Knowledge of the phylogenetic relationships within Psi...

In this paper, we describe a new species of Praxelis from Goiás, present a key and comments on the Brazilian species of Praxelis with a special note on the status of P. grandiflora. Additionally, the synonymy of P. macrocarpa under P. capillaris is proposed.

The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiver-sity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxo-nomic impediment to biodiversity research and conservation planning. The taxonomic impedi...

El género Praxelis Cass. habita zonas templadocálidas de Sudamérica. Se distingue por sus filarias caducas, receptáculo cónico y carpopodio asimétrico. La delimitación de especies es poco clara debido a la superposición de caracteres y a distintas interpretaciones y terminologías utilizadas para definirlos. El objetivo del trabajo es actualizar su...

Reviewer Acknowledgement

ABSTRACT Forest stands in seasonal environments can differ spatially and seasonally in the diversity of fleshy fruits available as resources for fauna. The aim of this study was to quantify spatial and seasonal variation in the richness and abundance of the dominant fleshy-fruited tree species in gallery forests of the Cerrado domain. Tree species...

Some taxonomic groups impose the need to use continuous morphological characteristics in taxon delimitation, and the grass genus Sorghastrum is a clear case of this necessity. Sorghastrum canescens was described based on the length of its awns. However, insufficient and scattered sampling has obscured the identity of this species for at least 137 y...

Glaziou was one of the most prominent plant collectors in the history of Brazilian botany. His field expeditions during the second Cruls Mission (1894–1895) in the area now recognized as Goiás and Distrito Federal led him to collect 26 of the 32 species of Myrcia he was to name in his botanical career. Glaziou´s itinerary in the second Cruls Missio...

The Phenological Predictability Index (PPI) is an algorithm incorporated into Brahms, one of the most widely used herbarium database management systems. PPI uses herbarium specimen data to calculate the probability of the occurrence of various phenological events in the field. Our hypothesis was that use of PPI to quantify the likelihood that a giv...

The urge to organise the world around us is an essential part of human nature. Naming and categorising enable us to store and access information ef ciently. The need to name and categorise extends to the natural world and, in particular, to living organisms. The science underpinning this area of knowledge is called Taxonomy, and is as old as humani...

The area known as Parque Ermida Dom Bosco on the shores of the Paranoá Lake, 7.8 km from the centre of Brasília (Rodoviária do Plano Piloto), Distrito Federal, Brazil, is a preservation area of Monumento Natural category (since 2019), and one of the few protected areas of the Distrito Federal without a floristic list. Collecting focused on the vasc...

Phylogenetic studies have highlighted incongruous generic placement and the usage of inappropriate names for species within tribe Myrteae (Myrtaceae). The genera affected are Calycolpus, Eugenia, Myrcia and Psidium. Eugenia aubletiana is legitimized by the designation of a lectotype and its usage proposed instead of Calycorectes bergii. Two generic...

The neotypification of Loranthus spicatus proposed by Job Kuijt in 1976 is analysed. The previously proposed neotype was found to disagree with the original concept of this species, which was adopted from the original publication in 1760 until 1964. Tabula 68 published in Selectarum stirpium americanarum historia in 1763 is proposed as lectotype. T...

In this study we transfer Pleonotoma albiflora to Adenocalymma based on a robust molecular phylogeny based on wide sampling of taxa and molecular markers. Morphological studies provide additional support for the placement of this taxon within Adenocalymma. Here, we make the new combination Adenocalymma albiflorum (Bignonieae, Bignoniaceae), and dis...

Recent phylogenetic and taxonomic studies resulted in the synonymization of Marlierea into Myrcia. This paper aims to transfer the last Marlierea species to their correct genera, which include not only taxa belonging to Myrcia, but also to Eugenia, Plinia and Siphoneugena. Five new combinations are proposed: Eugenia choriophylla, based on Marlierea...

Eugenia subamplexicaulis belongs to Eugenia sect. Pilothecium and was described based on a collection made in São Paulo state by C.F.P. von Martius in 1817. After that, no other collection of this species was made until May 2018, over 200 years later, when this species was rediscovered in the rocky formation Monumento Natural da Pedra de Itaocaia,...

Brazilian rupestrian grasslands (campos rupestres) are old, climatically buffered infertile landscapes, which support many endemic species. Asteraceae show the high levels of plant endemism and contain more endangered species than any other family in Brazil. Here, we evaluated the complementarity of two protected areas for the conservation of endan...

A new classification of the predominantly Neotropical tribe Myrteae is proposed to replace Berg’s three traditional subtribes, the Myrciinae, Eugeniinae, and Myrtinae. Nine subtribes are here proposed that are supported by molecular and morphological data. In addition to the three traditionally recognized but modified here, subtribe Pimentinae (ori...

1. Species of Drosophilidae are frequently used as model organisms, but their relationships with the environment, particularly in immature stages, remain poorly known. 2. This is the most comprehensive survey to date of fruit‐breeding drosophilids and their hosts in the Neotropics. Drosophilid host‐utilisation patterns were analysed as to geographi...

We investigated the effects of geographic distance and environmental heterogeneity on Asteraceae communities in the rupestrian grasslands of the Espinhaço Range, southeastern Brazil. Asteraceae species composition and relative abundance were sampled in 21–1 ha plots distributed across park conservation units, comprising an environmental gradient in...

(https://www.biogeography.org/wp-content/uploads/2018/12/Abstract-Book-IBS-Malaga-2019.pdf) Blepharocalyx salicifolius relationship over Neotropical Myrtaceae is complex and is supposed to be sister group of Myrtaceae from the new world or considered to be of highly interest in the resolution of evolutionary relations in this important taxonomic gr...

The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is well understood, s...

Psidium cattleyanum is a species of Myrtaceae native to the eastern coast of Brazil, widely naturalized in tropical and subtropical regions of the world due to its economic potential to be commercially exploited. Despite its importance, the name has not previously been typified. A lectotype is designated, and the correct spelling of the epithet is...

We describe Eugenia veadeirensis, a new species endemic to the Chapada dos Veadeiros from Brazil. The species most similar to E. veadeirensis is E. michaelneei. However, there are 14 morphological characteristics which differentiate them. In addition, we report Aspilia cardenasii, Bougainvillea praecox, Calea rhombifolia, Cleistocactus samaipatanus...

A new classification of the large Neotropical genus Myrcia s.l. is proposed. Nine sections are presented that correspond to recently published clades. Of these nine sections, sects. Myrcia, Aulomyrcia and Sympodiomyrcia are already published, sects. Reticulosae and Tomentosae are new sections, sect. Eugeniopsis is a new combination whilst sects. Ag...

Studies on the family Myrtaceae started later in Mato Grosso do Sul than in other Brazilian states. In Flora Brasiliensis, nine species were cited for what is now the state's territory. There are now 81 species of Myrtaceae recognized for Mato Grosso do Sul. The importance of the family in floristic studies in the state is variable, and is generall...

Resumen. En este estudio presentamos el checklist de especies del Cerro Mutún obtenido a partir de inventarios florísticos realizados entre el año 2008 y 2015 en seis comunidades vegetales (bosque semideciduo chiquitano, BCh; bosque chiquitano edafohidrófilo, BChE; cerradão, Ce; cerrado sensu stricto, CSS; campo sujo, CS; y vegetación de bancadas l...

During our studies of the Brazilian Loranthaceae, an extensive review of names associated to Oryctina and Passovia was carried out. We observed that the leaf architecture and floral structure of Oryctina myrsinites were different from that of other species of the genus. Analyses under Light and Scanning Electron Microscopy showed stellate fiber bun...

This paper describes a new species of Eugenia and proposes a new name in Psidium, from Southeastern Brazil. Both are necessary for a floristic treatment of Myrtaceae for the flora of São Paulo, Brazil. Eugenia robustior is most similar to Eugenia tetramera from which it differs by its larger leaves and flowers with more stamens and more ovules per...

Myrteae (c. 2500 species; 51 genera) is the largest tribe of Myrtaceae and an ecologically important groups of angiosperms in the Neotropics. Systematic relationships in Myrteae are complex, hindering conservation initiatives and jeopardizing evolutionary modelling. A well-supported and robust phylogenetic hypothesis was here targeted towards a com...

Solanum brasilianum Dunal was described by Dunal in 1813 with reference only to an illustration in an 18th century work by Leonard Plukenet. The plate is difficult to interpret and no explicitly related specimens were available so the name S. brasilianum has long been regarded as “unresolved” and has never been used. Material matching the Plukenet...

This paper describes a new, very distinctive, endangered species of Psidium (Myrtaceae, Myrteae) occurring in Bahia in Northeastern Brazil, in the Diamantina Atlantic Forest center of endemism, considered in the Atlantic Forest domain although transitional with the Caatinga domain. It is a small tree up to 5m tall. The species, that we have named P...

Resumen. En el presente estudio inventariamos la diversidad de la brioflora del Cerro Mutún con la finalidad de incrementar el conocimiento de la biodiversidad regional y nacional. Para este fin, realizamos inventarios de briófitos en cuatro comunidades vegetales naturales del Cerro Mutún: 1) bosque semideciduo chiquitano (bch); 2) bosque chiquitan...

A new species of Neojobertia is described from Brazil, Neojobertia alboaurantiaca. With the inclusion of this new species into the genus, Neojobertia includes three species, all of which are endemic to Brazil. Neojobertia alboaurantiaca grows predominantly in savannas and occurs in four neighbouring Brazilian states, Maranhão, Piauí, Goiás and Toca...

Premise of the study: By convention, scientific naming of angiosperm species began in 1753; it is estimated that 10-20% of species remain undescribed. To complete this task before rare, undescribed species go extinct, a better understanding of the description process is needed. The South American Cerrado biodiversity hotspot was considered a suita...

The English privateer and navigator William Dampier collected specimens, made species lists and recorded ethno-botanical information about the plants growing in and around Salvador (Brazil) in March / April 1699. However, Dampier’s role as a collector in the history of Brazilian botany has been overlooked. In this paper, Dampier’s visit to Brazil i...

Eugenia michaelneei is a new Bolvian species endemic to the Meseta de Chochís and the Serranía de Santiago de Chiquitos in eastern Santa Cruz Department. It is closely related to E. sonderiana, but differs mainly by its small height, low number of secondary veins, midvein glabrescent on the abaxial surface and glabrous on the adaxial surface, and f...

Resumen. En el presente trabajo proponemos la delimitación geográfica de los campos y sabanas del Cerrado en Bolivia, la uniformización terminológica de sus fisionomías y describimos sus respectivas características ambientales. La delimitación fue realizada considerando cuatro componentes ambientales característicos del Cerrado (coberturas de campo...

Oncidiinae é a segunda maior subtribo de orquídeas das Américas. Segundo a Lista de Espécies da Flora do Brasil, a representatividade da subtribo no Distrito Federal é de 15 gêneros e 19 espécies. O objetivo deste trabalho foi elaborar um tratamento taxonômico da subtribo para a Flora do Distrito Federal, Brasil. Foram feitas saídas de campo, consu...

The original specimens of Loranthus cucullaris Lam. (≡ Psittacanthus cucullaris (Lam.) G. Don) (Loranthaceae), collected by Jean-Baptiste Leblond, were located in P and the former neotypification proposal for this name is thus rejected. The identity and typification of Loranthus bracteatus Rich, are discussed and this name is considered a nomenclat...

An updated inventory of Brazilian seed plants is presented and offers important insights into the country’s biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, sh...

An updated inventory of Brazilian seed plants is presented and offers important insights into the country’s biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, sh...

Psidium sobralianum from northeastern Brazil is described and illustrated. It seems to be most similar to P. bahianum. Psidium sobralianum differs from P. bahianum in various ways: leaf ratio usually greater than 2 times as long as wide (versus generally less than 2 in P. bahianum); peduncles 1–5 mm long (versus 12–38 mm long in P. bahianum); matur...

O Distrito Federal abriga uma população estimada em 2,4 milhões de habitantes. A vegetação é característica do bioma Cerrado, o segundo maior do país, ocupando 2 milhões de km². Com a contrução de Brasília na década de 1950, começou um fluxo migratório para anova capital e transformação cultural da população local. Consciente da necessidade de se r...

The Cerrado Biome is currently classified as one of the most diverse savannas in the world. The anthropic destruction of this biome led the Cerrado to be recognized as one of the world’s hot spots for bioconservation. Cerrado sensu stricto phytophysiognomy represents 70% of the original Cerrado biome surface and floristic surveys are basic and impo...

As ervas-de-passarinho dos gêneros Dendrophthora e Phoradendron apresentam uma distribuição neotropical, totalizando cerca de 360 espécies. No Brasil apenas Phoradendron é amplamente distribuído, encontrado sobre uma enorme diversidade de hospedeiros, nem sempre listados e/ou conhecidos. Este trabalho teve por objetivo listar os táxons de hospedeir...

• Floral display describes the effect of flower size combined with the number of flowers per inflorescence. There is strong evidence that a floral-display trade-off operates under energetic constraint, with few-flowered inflorescences likely to have larger flowers than many-flowered inflorescences. Flower size can be estimated by different variable...

Two apparently narrow-endemic species of Eugenia are described from the Cabo Frio Center of Plant Diversity in the state of Rio de Janeiro, Brazil. Both present a limited distribution restricted to coastal areas north of Rio de Janeiro. The new species are described and compared with closely related species. Illustrations, distribution maps and con...

O estado de Sergipe sofreu extrema redução da área de Mata Atlântica nas últimas décadas. Este trabalho tem como objetivo inventariar a composição florística da Mata do Crasto, maior remanescente de Mata Atlântica de Sergipe (aproximadamente 1.000 ha), situada no Município de Santa Luzia do Itanhy. Um inventário intensivo foi realizado com coletas...

O primeiro passo para a identificação de um gênero ou uma espécie é normalmente conhecendo a qual família pertence. As chaves de identificação tradicionais são dicotômicas, raramente ilustradas e baseadas principalmente em caracteres florais, restringindo, assim, a identificação das plantas à fenofase reprodutiva. O objetivo desse trabalho foi a el...

Eugenia lomeroensis, a new species of Eugenia sect. Racemosae endemic to Cerrado vegetation in the Lomerío region in the Chiquitanía (Santa Cruz, Bolivia) is described and illustrated. Eugenia lomeroensis is compared with E. chiquitensis, which is considered the most similar species.

Este artigo trata de um estudo sobre o gênero Solanum L. (Solanaceae) no Distrito Federal. Tem como objetivo apresentar uma listagem atualizada das espécies de Solanum nativas do Distrito Federal, comentar sua distribuição e ocorrência em Unidades de Conservação. Os dados foram coletados de espécimes depositados em várias instituições, assim como d...

O comportamento fenológico como ferramenta de detecção dos impactos das mudanças climáticas tem sido um dos métodos preditivos mais adotados recentemente e modelos baseados em grandes bancos de dados, como são os herbários, têm sido propostos. O uso de registros de herbário é uma ferramenta útil para examinar as tendências a longo prazo de eventos...

O acúmulo de dados em herbários pode ampliar a quantidade de informações a respeito de variações fenológicas, tema especialmente importante no atual contexto de mudanças climáticas. Este trabalho visa testar a recente ferramenta PPI do programa BRAHMS, que estabelece padrões fenológicos baseando-se em dados de herbário, em algumas espécies da famíl...

Two species of Eugenia L. (Myrtaceae) within Eugenia sect. Umbellatae O. Berg, E. teresaruiziana Villarroel & Faria and E. cydoniifolia O. Berg, are described and illustrated. The former is a new species, whereas the latter has not been collected since 1842. Both species are endemic to the cerrados of the Lomerio region of eastern Bolivia. This art...

This paper describes four new species and proposes a new synonym of Myrtaceae of particular relevance for the flora of Sergipe and Bahia, Brazil, either within Eugenia L. or Myrcia DC. The occurrence of Myrcianthes pseudomato (D.Legrand) McVaugh, the first species of the genus to be registered in Sergipe and the second species of the genus for Nort...

The genus Peristethium, characterized by determinate inflorescences protected by deciduous bracts, occurs in the northwest of South America, as well as Costa Rica and Panama. The main objective of this paper was to transfer one species to what we believe is its correct generic placement in Peristethium, that likewise implies in a shift of the genus...

Pollination is the main responsible factor for Angiosperm reproduction control and one of the most important ecological processes of terrestrial ecosystems. Biotic pollination, besides being more efficient, is also responsible for a higher evolutionary rate in Angiosperms, since the selective pressure imposed by constant changes in pollinator offer...

Myrcia lignosa, a new species only known from the Serranía de Huanchaca in the Noel Kempff Mercado National Park is described and illustrated. Eugenia angustissima O. Berg, E. gemmiflora O. Berg, E. klotzschiana O. Berg, Myrcia dasyblasta O. Berg, M. lingua (O. Berg) Mattos & D. Legrand and M. torta DC. are reported in Bolivia for the first time.

The history of the genus Cymbella C. Agardh and its typification were clarified some 20 years ago, with still some concerns on the validity and identity of some of the species involved. Different specimens have been referred to under the name C. lanceolata (C. Agardh) C. Agardh, even if its basionym is Pinnularia appendiculata (C. Agardh) Schaarsch...

A revision of Pusillanthus Kuijt for Brazil is presented. The recently described monotypic genus occurs in Venezuela, Guyana, and Brazil. In Brazil, it is distributed only within the Caatinga domain, in the states of Alagoas, Bahia and Paraíba. The new combination Pusillanthus pubescens (Rizzini) Caires is proposed and the species Phthirusa caating...

A new species of Eugenia, E. pyrifera Faria & Proença (Myrtaceae) is described and illustrated. A distribution map is provided and comments on the infrageneric position of the species are also made. This publication is part of an ongoing study of Eugenia L. for the Flora of Goiás and Tocantins. The species is close to E. megaflora Govaerts, but dis...

Six species of the genus Encyclia are accepted in the Distrito Federal, Goiás and Tocantins (Brazil): E. argentinensis, E. chapadensis, E. cyperifolia, E. gonzalezii, E. linearifolioides and E. osmantha. All the specimens were collected in the Cerrado biome. In total 42 names were analyzed. Two synonyms, four lectotypes and two epitypes are propose...

Phenological Predictability Index (PPI) is a tool for analysing phenological patterns incorporating herbarium data within BRAHMS (Botanical Research and Herbarium Management System). PPI produces a maximum-activity period and associated event predictability index between ~0 and 1. Simple, monthly random sampling showed the ideal number of unique re...

A new species of Solanum L. belonging to subgenus Leptostemonum (Dunal) Bitter section Acanthophora Dunal (Solanaceae) is described and illustrated from the Distrito Federal in central Brazil. Solanum savannarum Ribeiro-Silva & Proença is a small, spindly herb or subshrub with spiny stems and petioles, weakly lobed leaves, pentamerous or tetramerou...