Notas nomenclaturais e taxonômicas em Melastomataceae: combinações novas em Cambessedesia DC. e Marcetia DC

Martins, Angela Borges

doi:10.1590/s0102-33061995000100007

Cited by 7 publications

(2 citation statements)

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“…In recent decades the composition of the tribe has been challenged by Renner (1993) and . Using a morphological data set, Renner reduced the tribe to 11 genera with the removal of Centradenia G. Don (1832: 765), Poteranthera, Siphanthera and the merger of Pyramia Chamisso (1834: 458) with Cambessedesia Candolle (1828: 110) following Martins (1984Martins ( , 1995. , also using morphology, proposed a much narrower circumscription of the tribe.…”

Section: Tribal Generic and Infrageneric Relationshipsmentioning

confidence: 99%

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

Martins

Almeda

2017

Phytotaxa

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A systematic monograph is presented for Lavoisiera, a Brazilian endemic genus of 41 species that is centered in the campo rupestre ecoregion in the Brazilian Planalto south of the Amazon basin, mostly west of the Mata Atlântica (Atlantic Rainforest), and east of the Pantanal. The stronghold for species diversity is the state of Minas Gerais with 36 species, 30 of which are endemic there. This study represents the first comprehensive monograph of the genus based on field work across its distributional range, complemented by examination of over 3620 specimens from 35 herbaria. An evaluation of taxonomic characters used in the long-standing sectional classification of the genus has led to its abandonment because it is based on artificial characters and does not provide a sound working hypothesis of infrageneric relationships. Eight new species are described: L. arachnoidea, L. belinelloi, L. canastrensis, L. daviesiana, L. minima, L. rundeliana, L. setosa, and L. vestita; lectotypifications are provided for L. caryophyllea, L. chamaepitys, L. glandulifera, L. pulchella, and L. senae; and 44 epithets are relegated to synonymy. An identification key, full synonymy, descriptions, habitat and phenological information, distribution maps, diagnostic illustrations, images of representative species in the field, and geospatial conservation assessments are provided for all species based on IUCN criteria. SEM images of seed morphology are presented for nearly half of the species along with camera lucida drawings of meiotic chromosome figures for selected species, and an index to numbered collections examined.Key words: campo rupestre, Cerrado biome, conservation, endemism, Myrtales, neotropics ResumoApresentamos uma monografia sistemática para Lavoisiera, um gênero brasileiro endêmico com 41 espécies, cuja ocorrência é centrada na ecorregião de campo rupestre no Planalto Brasileiro, ao sul da Bacia Amazônica, principalmente a oeste da Mata Atlântica, e a leste do Pantanal. O principal reduto da diversidade de espécies do gênero é o estado de Minas Gerais, com 36 espécies, 30 das quais são ali endêmicas. Este estudo representa a primeira monografia abrangente do gênero baseada em trabalho de campo, cobrindo toda a extensão de sua área de distribuição, e complementado pelo exame de mais de 3620 espécimes de 35 herbários. Uma avaliação dos caracteres taxonômicos tradicionalmente utilizados na classificação seccional do gênero nos levou ao abandono da mesma, por ser baseada em caracteres artificiais e não fornecer uma hipótese operacional sólida sobre as relações infragenéricas. Oito novas espécies são descritas:vestita; lectotipificações são apresentadas para L. caryrophyllea, L. chamaepitys, L. pulchella e L. senae; e 44 epítetos são reduzidos à sinonímia. Uma chave de identificação, sinonímia completa, descrições, habitat, informações• Phytotaxa 315 (1) © 2017 Magnolia Press fenológicas, mapas de distribuição, ilustrações diagnósticas, imagens de espécies representativas no campo, e análises geoespaciais de conservaçã...

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Section: Tribal Generic and Infrageneric Relationshipsmentioning

confidence: 99%

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

Martins

Almeda

2017

Phytotaxa

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“…The first morphological and phylogenetic study of the genus was conducted by Santos (2007) and remains unpublished. During the last three decades, 12 species have been described and one new combination was proposed in Marcetia (Martins 1993(Martins , 1995a(Martins , 1995b(Martins , 2000Martins and Woodgyer 2000;Santos et al 2008Santos et al , 2013Pacifico and Almeda 2022b;Almeda et al in press). More recently, an online taxonomic treatment was produced (Santos 2023) as part of the Brazilian Flora 2020 project (BFG 2022).…”

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confidence: 99%

A Phylogenetic Analysis of Marcetia (Melastomataceae, Marcetieae) and Three New Sprawling Species from Bahia, Brazil

Pacifico,

Almeda,

Kriebel

2023

Systematic Botany

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Abstract— Three new species of the Neotropical genus Marcetia are described and illustrated: Marcetia barbadensis, Marcetia minima, and Marcetia serratifolia. The three species are known from small isolated populations in mountains of the Chapada Diamantina, Bahia, Brazil. The recognition of Marcetia barbadensis and Marcetia serratifolia is confirmed with an updated molecular phylogeny of the tribe Marcetieae (based on ETS, ITS, accD-psaI, atpF-atpH, trnS-trnG, psbK-psbL, ndhF and rbcL), and by morphological and morphometric studies. In turn, the recognition of Marcetia minima, a new species known only from the type gathering collected about 30 yr ago, is based on analyses of leaf and anther connective shape, as well as linear measurements of vegetative and reproductive structures. Based on the new phylogenetic hypothesis for Marcetieae, we reconstructed the evolution of habit and petal color in the tribe, and showed that prostrate plants and white flowers evolved repeatedly from ancestors with an erect habit and pink to magenta petals. We also provide notes on the intergeneric relationships and phylogeny of Marcetia and evaluate the generic placement of the recently described Acisanthera saxatilis.

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Systematics and Evolution of Tribe Pyramieae

Bochorny

Bacci

Michelangeli

et al. 2022

Systematics, Evolution, and Ecology of Melastomataceae

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Notas nomenclaturais e taxonômicas em Melastomataceae: combinações novas em Cambessedesia DC. e Marcetia DC

Cited by 7 publications

References 0 publications

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

A Monograph of the Brazilian endemic genus Lavoisiera (Melastomataceae: Microlicieae)

A Phylogenetic Analysis of Marcetia (Melastomataceae, Marcetieae) and Three New Sprawling Species from Bahia, Brazil

Systematics and Evolution of Tribe Pyramieae

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