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A new species of Araceae, Philodendron madalenense, endemic to the Atlantic Forest of Southeastern Brazil, is described. It belongs to the subgenus Philodendron sect. Macrobelium due to the cordate leaf blade, inflorescence longer than 5 cm in length, and ovary with 6-12 locules, basal placentation, and 3-4 ovules per locule. This species is rare, endemic to the state of Rio de Janeiro, and it is morphologically related to Philodendron follii.

— Mimosa is a species-rich genus with about 600 species distributed mainly in the Neotropics. Mimosa is especially diverse in the Cerrado where the genus shows high levels of endemism, but it is also represented in the Caatinga (the Brazilian seasonally dry vegetations). Four new species are described here, M. emaensis and M. sevilhae from the Cerrado, M. afranioi from the Caatinga, and M. robsonii from the Atlantic domain. We assessed their informal conservation status and two species would likely be categorized as Endangered (EN), one as Vulnerable (VU) to extinction, and one as Data Deficient (DD).

We describe Quararibea alversonii, a new species endemic to the Atlantic Forest of southern Bahia, which was found in the course of our review of Quararibea in Brazil. The new taxon is similar to Q. amazonica, mainly in calyx morphology, but it is distinguished by the presence of domatia, pedicel length, petal width, morphology of staminal columns and styles, as well as fruit shape. Here, we present a morphological description, taxonomic comments, photographs, distribution map, assessment of conservation status, and a comparative analysis between the new species and Q. amazonica, the only other member of the genus that also presents a costate calyx.

We present a review of nomenclatural types for the names given to 19 Luehea species and one variety (L. candicans, L. conwentzii, L. densiflora, L. divaricata, L. eichleri, L. ferruginea, L. grandiflora, L. hoehnei, L. laxiflora, L. macrophylla, L. microphylla, L. ochrophylla, L. paniculata, L. parvifolia, L. platypetala, L. rufescens, L. speciosa, L. uniflora, L. uniflora var. gracilis and L. villosa), including one neotypification, nine lectotypifications and seven second-step lectotypifications.

(Nomenclatural novelties in Miconieae (Melastomataceae): new synonym and typifications). This contribution provides diagnostic morphological characters, geographic distribution data, synonymizations and typifications for three species of Miconieae. We clarify the taxonomic status of Clidemia raddiana as a new synonym for Miconia capilliflora and designate its lectotype. For Miconia capillaris and Miconia leptopus, we provide nomenclatural adjustments, due to the similarity of the epithets and morphological characteristics. We also designate a lectotype and a neotype, respectively, for these two species.

Understanding the composition of the type specimen of Pseudolaelia corcovadensis is very important for establishing its taxonomic circumscription. This specimen, originally collected on the Morro do Corcovado in the municipality of Rio de Janeiro, within the Atlantic Forest biome, were mixed with those of another species of Pseudolaelia. A careful study of the specimens has made it possible to propose the lectotypification of P. corcovadensis and determine the identity of the mixed specimen, which corresponds to P. vellozicola, a similar species. The morphological description and geographical distribution, now more restricted, are presented for P. corcovadensis, and the range of P. vellozicola is established as more extensive than previously understood.

Caperonia (Ditaxinae, Euphorbiaceae) has ca. 34 species distributed in the Americas and Africa, with approximately 26 of them occurring in South America. The species are exclusively of open marshy environments. The new species Caperonia amarumayu and C. maracaibensis, from Bolivia and Venezuela respectively, are hereby described. We also designate a lectotype, and report two new occurrences of C. zaponzeta for Bolivia and Brazil.

Although Eugenia and Plinia genera belong to different subtribes in Myrteae (Myrtaceae), shared morphological features have led to frequent mistaken identity to these species. Molecular phylogeny and morphological studies in Plinia show that Plinia martinellii and Plinia sebastianopolitana should be combined within the generic concept of Eugenia. In addition, two synonymizations under Plinia sebastianopolitana and one under Plinia martinellii are proposed. Commentary on these nnomenclatural adjustments, as well as on morphological and geographical data related to the evolution of these lineages is also provided.

During a taxonomic study of Anthurium sect. Pachyneurium, it was found that the names of four species required typification. Verification of the protologues and cited collections is discussed and typifications are proposed as follows: the illustration Schott Icones Aroideae No. 465 is designated as the neotype of A. affine Schott. A lectotype is designated for A. bonplandii G.S.Bunting since the holotype, cited in the protologue at MY, was not found there. An epitype is selected for A. solitarium Schott because the lectotype illustration of J.M.C. Vellozo (Flora Fluminensis t. 123) lacks sufficient detail to determine it unambiguously to species in A. sect. Pachyneurium. A lectotype is selected for A. glaziovii Hook.f., a synonym of A. solitarium.

Orchidaceae is a megadiverse botanical family in Brazil, particularly in the Atlantic Forest where it is a priority group for conservation. Parque Nacional do Itatiaia (PARNA Itatiaia) was the first conservation unit established in Brazil, and represents a large and mature remnant of Atlantic Forest. Updated data on richness, distribution and conservation of the Neotropical and ornamental subtribe Laeliinae in the park recently disclosed the occurrence of presumed locally extinct species, but without a taxonomic approach. Thus, we present a comprehensive taxonomic treatment of Laeliinae in the PARNA Itatiaia. The subtribe is represented by six genera and 33 species, which corresponds to about 15% of the orchid flora of PARNA Itatiaia. Epidendrum is the richest genus, with 20 species, followed by Cattleya (6 spp.) and Prosthechea (4 spp.). Species of Laeliinae grow in shady and humid habitats, especially near rivers, at elevations ranging 750-1,200 m, with species richness decreasing with elevation. Several species form small populations (commonly < 10 individuals), which are in need of prompt conservation actions to avoid local extinction. Samples of Laeliinae from PARNA Itatiaia in collections of consulted herbaria were found to be scarce. Variable morphological characteristics, mainly of the lip, distinguishe species of Laeliinae.

Resumo Apresenta-se o estudo taxonômico dos gêneros Myrciaria (5 spp.), Neomitranthes (5 spp.) e Siphoneugena (4 spp.) na flora do estado do Rio de Janeiro. Consultou-se a literatura especializada e coleções dos principais herbários do estado, incluindo imagens digitalizadas on line e tipos nomenclaturais, e realizaram-se expedições a campo para observação e coleta de amostras. Apresenta-se chaves de identificação, descrições, comentários, ilustrações e mapas de distribuição para as 14 espécies estudadas. A maioria das espécies ocorre em Floresta Ombrófila Densa, sendo algumas encontradas também em Restinga. Todas as espécies são encontradas em várias Unidades de Conservação. Características da inflorescência e florais distinguem os gêneros, enquanto as espécies são distintas por características dos ramos, folhas, inflorescências, brácteas, bractéolas, cálice e número de óvulos por lóculo. Também são propostas lectotipificações para Myrciaria disticha, Eugenia guaquiea e Eugenia tenella, e um novo sinônimo (Myrciaria tenella var. elliptica) e registrados novos locais de ocorrência no estado fluminense para 10 espécies.

Made available in DSpace on 2021-06-25T11:47:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-31 Instituto Chico Mendes de Conservacao da Biodiversidade (ICMBio) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundacao de Amparo a Pesquisa e Inovacao do Espirito Santo FAPES Background Brazilian protected areas are essential for plant conservation in the Atlantic Forest domain, one of the 36 global biodiversity hotspots. A major challenge for improving conservation actions is to know the plant richness, protected by these areas. Online databases offer an accessible way to build plant species lists and to provide relevant information about biodiversity. A list of land plants of Parque Nacional do Caparao (PNC) was previously built using online databases and published on the website Catalogo de Plantas das Unidades de Conservacao do Brasil. Here, we provide and discuss additional information about plant species richness, endemism and conservation in the PNC that could not be included in the List. We documented 1,791 species of land plants as occurring in PNC, of which 63 are cited as threatened (CR, EN or VU) by the Brazilian National Red List, seven as data deficient (DD) and five as priorities for conservation. Fifity-one species were possible new ocurrences for ES and MG states. New information Parque Nacional do Caparao houses 8% of the land plant species endemic to the Brazilian Atlantic Forest, including 6% of its angiosperms, 31% of its lycophytes and ferns and 14% of its avascular plants. Twelve percent of the threatened species listed for the State of Espirito Santo and 7% listed for the State of Minas Gerais are also protected by PNC. Surprisingly, 79% of the collections analysed here were carried out in Minas Gerais, which represents just 21% of the total extension of the Park. The compiled data uncover a huge botanical collection gap in this federally-protected area. Univ Fed Espirito Santo, Vitoria, ES, Brazil Inst Pesquisas Jardim Bot Rio de Janeiro, Rio De Janeiro, Brazil Univ Estadual Feira de Santana, Feira De Santana, BA, Brazil Univ Fed Minas Gerais, Belo Horizonte, MG, Brazil Fundacao Espirito Santense Tecnol, Vitoria, ES, Brazil Secretaria Desenvolvimento Cidade & Meio Ambiente, Cariacica, Brazil Univ Estadual Campinas, Campinas, Brazil Univ Estadual Santa Cruz, Ilheus, BA, Brazil Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil Inst Nacl Mata Atlantica, Santa Teresa, Brazil Univ Estado Minas Gerais, Belo Horizonte, MG, Brazil Univ Fed Juiz de Fora, Juiz De Fora, Brazil Univ Fed Alfenas, Alfenas, Brazil Univ Estado Santa Catarina, Laguna, Brazil Univ Nacl Nordeste, Consejo Nacl Invest Cient & Tecn, Corrientes, Argentina Univ Estadual Norte Fluminense, Campos Dos Goytacazes, Brazil Univ Sao Paulo, Sao Paulo, Brazil STCP Engn Projetos, Curitiba, Parana, Brazil Univ Fed Parana, Curitiba, Parana, Brazil Embrapa Clima Temperado, Pelotas, RS, Brazil Univ Fed Uberlandia, Uberlandia, MG, Brazil Univ Estadual Paulista, Sao Jose Do Rio Preto, Brazil Inst Bot, Sao Paulo, Brazil Univ Fed Oeste Para, Santarem, Brazil Univ Fed Rio Grande do Sul, Porto Alegre, RS, Brazil Univ Fed Sao Joao del Rei, Sao Joao Del Rei, Brazil Museu Paraense Emilio Goeldi, Belem, Para, Brazil Univ Estadual Paulista, Rio Claro, Brazil Univ Fed Vicosa, Vicosa, MG, Brazil Univ Estadual Paulista, Sao Jose Do Rio Preto, Brazil Univ Estadual Paulista, Rio Claro, Brazil CNPq: CNPq 421276/2017-7 Fundacao de Amparo a Pesquisa e Inovacao do Espirito Santo: FAPES 34/2018 Fundacao de Amparo a Pesquisa e Inovacao do Espirito Santo: Chamada CNPq/ICMBio/FAPs No 18/2017 FAPES: 19/2018 FAPES: 525/2018

This study aimed to describe the origin, position, development and typology of inflorescences in Miconieae through ontogenetic and morphological analyses using light microscopy. We observed three morphological character states: terminal, pseudo-axillary and axillary; and two ontogenetic states: terminal and axillary. The terminal and pseudoaxillary inflorescences originate from terminal reproductive meristems. Pseudoaxillary inflorescences result from unequal development of vegetative meristems which flank the terminal flowering unit, whereas in terminal inflorescences, both vegetative meristems develop equally. In axillary inflorescences, the terminal reproductive meristem is not involved, while axillary inflorescences originate from reproductive axillary meristems. The inflorescences range from heterocladic and thyrsoid to simpler types, such as botryoid and triad. Such characteristics can also be seen in paracladia, particularly those most distal. The terminal inflorescence is observed in all clades of Miconieae, and pseudoaxillary and axillary inflorescences should be apomorphic states in the tribe and derived from the terminal condition.

Made available in DSpace on 2020-12-10T17:33:35Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-05-19 Instituto Chico Mendes de Conservacao da Biodiversidade (ICMBio) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundacao de Amparo a Pesquisa e Inovacao do Espirito Santo FAPES Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) Background Brazil is one of the most biodiverse countries in the world, with about 37,000 species of land plants. Part of this biodiversity is within protected areas. The development of online databases in the last years greatly improved the available biodiversity data. However, the existing databases do not provide information about the protected areas in which individual plant species occur. The lack of such information is a crucial gap for conservation actions. This study aimed to show how the information captured from online databases, cleaned by a protocol and verified by taxonomists allowed us to obtain a comprehensive list of the vascular plant species from the Parque Nacional do Itatiaia, the first national park founded in Brazil. All existing records in the online database JABOT (15,100 vouchers) were downloaded, resulting in 11,783 vouchers identified at the species level. Overall, we documented 2,316 species belonging to 176 families and 837 genera of vascular plants in the Parque Nacional do Itatiaia. Considering the whole vascular flora, 2,238 species are native and 78 are non-native. New information The Parque Nacional do Itatiaia houses 13% of the angiosperm and 37% of the fern species known from the Brazilian Atlantic Forest. Amongst these species, 82 have been cited as threatened, following IUCN categories (CR, EN or VU), seven are data deficient (DD) and 15 have been classified as a conservation priority, because they are only known from a single specimen collected before 1969. Univ Fed Espirito Santo, Vitoria, ES, Brazil Inst Pesquisas Jardim Bot Rio de Janeiro, Rio De Janeiro, Brazil Univ Estadual Santa Cruz, Ilheus, BA, Brazil Univ Estadual Feira De Santana, Feira De Santana, BA, Brazil Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil Univ Estado Minas Gerais, Belo Horizonte, MG, Brazil Univ Fed Juiz De Fora, Juiz De Fora, Brazil Univ Fed Alfenas, Alfenas, Brazil Inst Bot, Sao Paulo, Brazil Univ Estadual Norte Fluminense, Campos Dos Goytacazes, Brazil Univ Sao Paulo, Sao Paulo, Brazil Univ Fed Parana, Curitiba, Parana, Brazil Embrapa Clima Temperado, Pelotas, RS, Brazil Univ Fed Santa Catarina, Florianopolis, SC, Brazil Univ Fed Pelotas, Pelotas, RS, Brazil Univ Fed Oeste Para, Santarem, Brazil Univ Fed Rural Rio De Janeiro, Seropedica, Brazil Univ Fed Sao Joao Del Rei, Sao Joao Del Rei, Brazil Museu Paraense Emilio Goeldi, Belem, Para, Brazil Univ Estadual Paulista, Sao Paulo, Brazil Flowr Corp, Markham, ON, Canada Univ Estado Rio De Janeiro, Rio De Janeiro, Brazil Univ Estadual Campinas, Campinas, Brazil Univ Fed Rio Grande do Sul, Porto Alegre, RS, Brazil Univ Estadual Paulista, Sao Paulo, Brazil Instituto Chico Mendes de Conservacao da Biodiversidade (ICMBio): 18/2017 CNPq: 18/2017 CNPq: CNPq 421276/2017-7 Fundacao de Amparo a Pesquisa e Inovacao do Espirito Santo: 18/2017 Fundacao de Amparo a Pesquisa e Inovacao do Espirito Santo: FAPES 34/2018 FAPES: 525/2018 FAPERJ: E-26/202.775/2018 FAPERJ: E-26/202.778/2018

This study is a taxonomic treatment of Mimosa from the state of Rio de Janeiro, a significant region of the Atlantic Domain in southeastern Brazil. We recognize 36 species (38 taxa), corresponding to 31% of the Mimosa species listed for the domain. A total of 816 specimens were analyzed, and around 40% of the studied taxa are endemic to the Atlantic Domain. Dense ombrophilous forests, seasonal semideciduous forests, plus secondary vegetation types have the highest species richness, despite the genus being found in all vegetation types in the state. Five species are endangered in Brazil. An identification key, morphological descriptions and comments, a table summarizing vegetation data, illustrations, and geographic distributionmaps are provided. This study extends the known geographic distribution of several taxa of Mimosa, andincludesnewrecords for the study area. Additionally, we propose the synonymization of M. extensa Benth. var. annae Barneby with the typical variety.

Miconia bradeana is described from the state of Rio de Janeiro, in southeastern Brazil. It is endemic to the municipality of Santa Maria Madalena and to the Brazilian Atlantic Forest, occurring in dense montane tropical rainforest. The main diagnostic characteristics of this new species are the rigid-membranaceous to chartaceous and narrowly elliptic to lanceolate leaves, 5(-6)-merous flowers, well-defined, deltoid calyx lobes, apiculate petals, stamens 14–16, connectives with dorsal-basal, usually glandulose appendages, and glandulose ovary apex. Miconia bradeana is an endangered (EN) species.

Estudos taxonômicos em Myrcia (Myrciinae; Myrtaceae) no Brasil: novidades morfológicas, circunscrição e novas ocorrências para a Amazônia. Baseado em recentes estudos em Myrtaceae para a Amazônia brasileira, apresenta-se uma atualização da circunscrição morfológica de Myrcia e oito novos registros de ocorrência do gênero no estado do Pará, dos quais três também representam novas ocorrências para a Amazônia brasileira. Comentários sobre características diagnósticas e afinidades taxonômicas de cada espécie, bem como os respectivos dados de distribuição geográfica e ambientes preferenciais de ocorrência são fornecidos. Recomendações para atualização da lista de espécies de Myrtaceae da flora do Brasi l também são apresentadas. Based on recent studies on Myrtaceae in the Brazilian Amazon, we present an update of the morphological circumscription of Myrcia, including eight new occurrences of the genus in Pará State, three of which represent new records for the Amazon region. Comments are provided on the diagnostic features and taxonomic affi nities of each species, their geographic distributions, and their preferred environments of occurrence. Recommendations for updating the list of Brazilian Myrtaceae species are presented.