Notes on South American Bromeliaceae

Philcox, D.

doi:10.2307/4110667

Cited by 8 publications

(4 citation statements)

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“…1). Variety angustispica is based on differences of leaf indument and inflorescence shape (Philcox, 1992). In Macrochordion , we observed that these characters show considerable plasticity under field conditions, within the same individual (leaf indument) or among individuals of a same population (inflorescence shape).…”

Section: Resultsmentioning

confidence: 99%

“…Later, four new taxa were described for Macrochordion : A. pabstii (Pereira & Moutinho, 1980), A. kautskyana (Pereira, 1980), A. bromeliifolia var. angustispica (Philcox, 1992) and A. maasii (Gouda & Till, 1997). Leme (1992) synonymized A. nervata under A. vanhoutteana (Van Houtte) Mez, this last species belonging to Aechmea subgenus Pothuava .…”

Section: Introductionmentioning

confidence: 99%

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A revision of Aechmea subgenus Macrochordion (Bromeliaceae) based on phenetic analyses of morphological variation

Faria

Wendt

Brown

2009

Botanical Journal of the Linnean Society

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Considerable taxonomic confusion exists among species of Aechmea subgenus Macrochordion (Bromeliaceae), which comprises the A. bromeliifolia complex. Cluster and principal components analyses were performed in order to identify how many taxa exist in this complex and how they can be distinguished morphologically. Data for 16 morphological characters were scored from 38 selected specimens from different geographical regions, including type specimens. Results from phenetic analyses, associated with observations in the field and of herbaria exemplars, support the recognition of five species, one with two varieties (A. alba, A. bromeliifolia var. bromeliifolia, A. bromeliifolia var. albobracteata, A. lamarchei, A. maasii and A. triangularis). Five previously recognized taxa are placed into synonymy: A. maculata and A. chlorophylla (both under A. lamarchei); A. pabstii (under A. alba); A. kautskyana (under A. triangularis); and A. bromeliifolia var. angustispica (under A. bromeliifolia var. bromeliifolia). This revision also includes a key to the species, descriptions, specimens examined, illustrations, photographs, distribution maps and information on conservation status.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A revision of Aechmea subgenus Macrochordion (Bromeliaceae) based on phenetic analyses of morphological variation

Faria

Wendt

Brown

2009

Botanical Journal of the Linnean Society

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“…All share similar vegetative and reproductive traits, such as green-greyish leaves, plumose wind-dispersed seeds and nocturnal yellow flowers, which are usually associated with pollination by moths and bats. Such similarities yielded poor taxonomic delimitation over time (Machado et al, 2020;Philcox, 1992), although recent morfo-anatomical traits were in agreement with these taxa (Silva et al, 2020). For the purpose of this work, we considered all sampled individuals as belonging to the V. oligantha species complex.…”

Section: Target Taxon Sampling and Dna Extractionmentioning

confidence: 99%

Underlying microevolutionary processes parallel macroevolutionary patterns in ancient neotropical mountains

Dantas-Queiroz

Cacossi

Leal

et al. 2021

Journal of Biogeography

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Aim: Ancient climatic fluctuations are invoked as the main driving force that generates the astonishing biodiversity in ancient mountains. As a result, endemism and spatial turnover are usually high and few species are widespread amongst entire mountain ranges, precluding the understanding of origins of macroevolutionary patterns. Here, we used a species endemic to, but widespread in, one of the most species-rich ancient mountains in the globe to test how environmental changes acted on and how their macroevolutionary patterns were shaped.Location: Espinhaço Range, Eastern Brazil. Taxon: Vriesea oligantha species complex (Bromeliaceae). Methods:We compiled data for plastidial regions and nuclear microsatellites to assess genetic diversity, population structure, migration rates and phylogenetic relationships. Using temperature and precipitation variables, we modelled suitable areas for the present and the past, estimating corridors between isolated populations. We also implemented Bayesian demographic analyses to estimate ancient populations dynamics. Finally, we tested if population structure is driven by isolation by environment or by distance using a Bayesian modelling approach.Results: Our results showed that the intraspecific divergence events of V. oligantha are older than those associated with the latest Pleistocene climatic oscillations, supporting the view that Quaternary climatic fluctuations are key components for understanding its population differentiation processes. Species distribution modelling estimated corridors between populations in the past, as also shown in the demographic analyses, depicting a major spatial reorganization during colder climates.Besides, the high genetic structure estimated results from both models of isolation by distance and by environment. Main conclusions: V. oligantha is a remarkable model to test the effects of climatic oscillations over the biological community, since this species originated in the early-Pleistocene, prevailing over several cycles of climatic fluctuations until today. The estimated demographic dynamics of V. oligantha agrees with the species-pump mechanism, suggesting it as the main cause of speciation within the Espinhaço Range. Moreover, the phylogeographic patterns of V. oligantha reflect previously recognised | 2313 DANTAS-QUEIROZ ET Al.

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“…These three taxa are distinguished by the flower size, which is larger in L. azurea than in L. alvimii and L. smithii, and by the number of flowers per branch, which is more greatly reduced in L. azurea than in the other two species (see the 'Key to species' for details). Philcox (1992) described Araeococcus pseudocatopsis, which was later cited as a synonym of L. azurea (Luther & Sieff, 1994). After examination of the type material, and the original description and illustration, we agree with the synonym proposed by Luther & Sieff (1994).…”

Section: Iucn Conservation Status: Endangered En B1ab(iii)mentioning

confidence: 99%

Taxonomy and conservation of the genus Lymania (Bromeliaceae) in the southern Bahian Atlantic Forest of Brazil

Sousa

Wendt

2008

Botan J Linn Soc

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A taxonomic revision of Lymania Read is presented, including a key to the species, descriptions, conservation status, notes, and specimens examined, as well as illustrations, photographs, and distribution maps. One species, Aechmea brachycaulis, is resurrected out of synonymy under Lymania corallina, resulting in one new combination: Lymania brachycaulis (E. Morren ex Baker) L.F.Sousa, comb. nov. As recognized here, the genus Lymania comprises nine species, eight of which are endemic to southern Bahia, Brazil. The conservation status of each species is evaluated using World Conservation Union (IUCN) guidelines/criteria, and categories of threat are proposed. Five of the nine species are considered to be 'Critically Endangered', three 'Endangered', and one 'Vulnerable'.

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Notes on South American Bromeliaceae

Cited by 8 publications

References 0 publications

A revision of Aechmea subgenus Macrochordion (Bromeliaceae) based on phenetic analyses of morphological variation

A revision of Aechmea subgenus Macrochordion (Bromeliaceae) based on phenetic analyses of morphological variation

Underlying microevolutionary processes parallel macroevolutionary patterns in ancient neotropical mountains

Taxonomy and conservation of the genus Lymania (Bromeliaceae) in the southern Bahian Atlantic Forest of Brazil

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