Classification of Old World Velloziaceae

Smith, Lyman B.; Ayensu, Edward S.

doi:10.2307/4108383

Cited by 22 publications

(31 citation statements)

References 3 publications

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“…Pleurostima Figure 1. Comparison between the two current systems of classification, Menezes (1971Menezes ( , 1980a and Smith & Ayensu (1974, 1976. Adapted from Mello-Silva (1991).…”

Section: Ladistic Analysismentioning

confidence: 99%

“…Smith & Ayensu, 1974, 1976Menezes, 1971, 1980a Menezes (1971Menezes ( , 1980a and of Smith & Ayensu (1974, 1976. Representative voucher material of the species used in the analysis are in square brackets.…”

Section: Ladistic Analysismentioning

confidence: 99%

“…Despite having been intensively studied in the past three decades, its phylogeny and classification remain debatable and in need of consensus. Its perplexing history (Kubitzki, 1988) is reflected in the oscillation between the two current systems of classification, Menezes (1971Menezes ( , 1980a and Smith & Ayensu (1974, 1976. Both are gradistic and conflicting in the delimitation of supraspecific groups (Mello-Silva, 1991).…”

Section: Introductionmentioning

confidence: 99%

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Morphological analysis, phylogenies and classification in Velloziaceae

Mello‐Silva

2005

Botanical Journal of the Linnean Society

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A morphological (non-molecular) cladistic analysis of the Velloziaceae is presented. The terminal taxa are 47 species of Velloziaceae plus four taxa as outgroups: Acanthochlamys bracteata (Acanthochlamydaceae), Encholirium scrutor (Bromeliaceae), Thoracocarpus bissectus (Cyclanthaceae) and Pandanus racemosus (Pandanaceae). The species of Velloziaceae sampled represent a significant proportion of the morphological diversity of the family, including all recognized genera and sections. The analysis revealed two major groups within Velloziaceae, supported mainly by stomata, vascular bundles in the pedicel, aquiferous tissues, filaments, anthers, pollen, stigma, seeds, ploidy and chemical characters. Comparison between this and the previous phylogenetic hypotheses for Velloziaceae, together with the two conflicting current classifications, suggests that there is incompatibility concerning the support of current genera and sections. The only three groups supported in all phylogenies are Barbacenioideae sensu Menezes ( = Barbacenia sensu Smith & Ayensu), Xerophyta sect. Barbacenioides and Xerophyta sect. Xerophyta sensu Smith & Ayensu.

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“…Pleurostima Figure 1. Comparison between the two current systems of classification, Menezes (1971Menezes ( , 1980a and Smith & Ayensu (1974, 1976. Adapted from Mello-Silva (1991).…”

Section: Ladistic Analysismentioning

confidence: 99%

Section: Ladistic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphological analysis, phylogenies and classification in Velloziaceae

Mello‐Silva

2005

Botanical Journal of the Linnean Society

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“…Além da morfologia externa, são apresentados caracteres anatômicos da lâmina foliar, largamente considerados na sistemática de Velloziaceae (e.g. Ayensu 1974, Coetzee 1974, Mello-Silva 1991, 2000, Menezes 1971, Menezes & Semir 1991, Menezes et al 1994, Smith & Ayensu 1974, 1976 e do pedicelo (Mello-Silva 1997, 2000. É apresentada e discutida, também, a sinonimização de Barbacenia fragrans (cujo parátipo foi coletado em São Paulo) e de B. tricolor sob B. tomentosa.…”

Section: Introductionunclassified

Novitates Velloziacearum florae phanerogamicae Sancti Pauli

Mello‐Silva

2004

Rev. bras. Bot.

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-(Novitates Velloziacearum florae phanerogamicae Sancti Pauli). Vellozia obtecta and V. peripherica, two new species of Velloziaceae from northern São Paulo and adjacent areas of Minas Gerais, are described. Their taxonomic relantionships and the characters supporting them as new species are considered. An account of their leaf and pedicel anatomy is also provided. The synonimization of Barbacenia fragrans and B. tricolor under B. tomentosa is also presented and discussed.Key words -Brazil, Minas Gerais, new species, new synonyms, São Paulo, Velloziaceae RESUMO -(Novitates Velloziacearum florae phanerogamicae Sancti Pauli). São descritas duas espécies novas de Velloziaceae do norte de São Paulo e áreas adjacentes de Minas Gerais, Vellozia obtecta e V. peripherica. São discutidos suas relações taxonômicas e os caracteres que as sustentam como novas. São fornecidas também descrições anatômicas da lâmina foliar e do pedicelo. A sinonimização de Barbacenia fragrans e B. tricolor sob B. tomentosa é também apresentada e discutida.Palavras-chave -Brasil, espécies novas, Minas Gerais, São Paulo, sinônimos novos, Velloziaceae IntroduçãoQuando do tratamento das Velloziaceae para a Flora do Estado de São Paulo, duas espécies novas foram delimitadas e são aqui descritas. Vellozia obtecta e V. peripherica habitam a região de Pedregulho e Rifaina, no norte do estado, em campos e afloramentos rochosos relacionados com as formações da Serra da Canastra, em Minas Gerais, onde estas espécies também ocorrem. Além da morfologia externa, são apresentados caracteres anatômicos da lâmina foliar, largamente considerados na sistemática de Velloziaceae (e.g.

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“…Various taxonomic treatments published in recent years have revised and refined the classification of this family (Smith 1962, Ayensu 1969, 1973a, 1974, Menezes 1971, Smith and Ayensu 1974. This study is an attempt to achieve a further refinement of the group.…”

mentioning

confidence: 99%