Transfer of the New Caledonian genus Boronella to Boronia (Rutaceae) based on analyses of cpDNA and nrDNA

2015 ◽  
Vol 28 (3) ◽  
pp. 111 ◽  
Author(s):  
Michael J. Bayly ◽  
Marco F. Duretto ◽  
Gareth D. Holmes ◽  
Paul I. Forster ◽  
David J. Cantrill ◽  
...  
Keyword(s):  
Dna Sequences ◽  
New Caledonia ◽  
Phylogenetic Analyses ◽  
Taxon Sampling ◽  
New Combinations ◽  
New Classification ◽  
Infrageneric Classification ◽  
Molecular Phylogenetic ◽  
Nuclear Its

As currently circumscribed, Boronia (Rutaceae) is a large Australian genus of 148 species distributed in all states and mainland territories, and Boronella is confined to New Caledonia and contains ~four species. We present molecular phylogenetic analyses of these genera, based on chloroplast (trnL–trnF) and nuclear (ITS, ETS) DNA sequences, to assess their relationships and infrageneric classification. Analyses strongly support the monophyly of a Boronia+Boronella clade and that Boronella is nested within Boronia. They also support the monophyly of Boronella and Boronia sections Algidae, Valvatae and Cyanothamnus, and ser. Pedunculatae (sect. Boronia), but resolve sect. Boronia and ser. Boronia as polyphyletic. On the basis of these results, we propose a new classification wherein Boronella is transferred to Boronia and recognised at the rank of section, and a new name and two new combinations in Boronia are provided for the following three species: Boronia hartleyi Duretto & Bayly, Boronia pancheri (Baill.) Duretto & Bayly and Boronia parvifolia (Baker f.) Duretto & Bayly. A revised circumscription is presented for Boronia sect. Boronia, and Pedunculatae is elevated from a series to a section. The relationships and classification of some taxa require further clarification, either because of limited taxon sampling, or because some nodes in phylogenetic analyses are poorly resolved or supported.

Phylogenetic relationships and a new sectional classification of Croton (Euphorbiaceae) in Australia

2015 ◽  
Vol 28 (4) ◽  
pp. 219 ◽  
Author(s):  
Benjamin W. van Ee ◽  
Paul I. Forster ◽  
Paul E. Berry
Keyword(s):  
Maximum Likelihood ◽  
Dna Sequences ◽  
Pacific Islands ◽  
Australian Species ◽  
Molecular Phylogenetic ◽  
Species Lists ◽  
Nuclear Its ◽  
Australian Flora ◽  
Sectional Classification

A molecular phylogeny, morphological descriptions, species lists and a key to the sections of Croton L. (Euphorbiaceae) recognised for Australia are presented. The molecular phylogenetic results supported the recognition of six sections, to account for the 29 native Australian species. The monophyly of each of these sections was highly supported in the Bayesian and maximum-likelihood analyses of nuclear ITS and plastid trnL–F DNA sequences, whereas their relationships to each other and to other groups were less well resolved. Croton may represent one, two or three separate arrivals to Australia, with support for hypotheses of subsequent dispersals from Australia to Pacific islands and to Asia. Croton sections Argyrati, Arnhemici, Caudati, Dockrilliorum and Insulares are newly described. Croton section Gymnocroton Baill., previously placed in synonymy, is again recognised. Croton armstrongii S.Moore is excluded from the Australian flora.

Molecular phylogenetic insights into the evolution of Eriosema (Fabaceae): a recent tropical savanna-adapted genus

2020 ◽  
Vol 194 (4) ◽  
pp. 439-459
Author(s):  
Elisa Silva Cândido ◽  
Mohammad Vatanparast ◽  
Wanderleia de Vargas ◽  
Luísa M P A Bezerra ◽  
Gwilym P Lewis ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Divergence Time ◽  
Data Sets ◽  
South American ◽  
Tropical Savanna ◽  
African Species ◽  
Molecular Phylogenetic ◽  
Nuclear Its ◽  
Combined Data

Abstract Eriosema comprises c. 150 species and has a pantropical distribution and two centres of diversity, Africa and America. The species occur in tropical savannas and grasslands, including the cerrado in Brazil. They have adapted to these environments by developing specialized underground organs, and an abundance of trichomes. Here we present the first comprehensive molecular phylogenetic analysis of Eriosema, including species from its entire distribution range and generating 391 new DNA sequences. We sampled 140 species from nine genera of Cajaninae, of which 94 (60% of the genus) were Eriosema. Our analyses were based on the nuclear ITS and plastid rpl32 and trnQ regions, and used maximum likelihood and Bayesian phylogenetic analyses of individual and combined data sets. In all analyses, Eriosema was resolved as monophyletic, but its interspecific relationships are not well resolved. Rhynchosia is not monophyletic, and some African Rhynchosia spp. emerged together as sister to Eriosema. Our study supports the monophyly of Adenodolichos, Dunbaria, Flemingia and Cajanus, but Chrysoscias and Bolusafra formed a clade that is sister to a group of Rhynchosia spp. Paracalyx was resolved as paraphyletic and nested among African Rhynchosia spp. Divergence time analysis suggested that the Eriosema lineages diverged 6.5–10.7 Mya. Two major lineages have diversified in Eriosema, one including most of the African species (4.41–6.68 Mya), the other mainly composed of the South American cerrado species (3.56–5.78 Mya). These results revealed that Eriosema is a recent and tropical savanna-adapted group, and its diversification occurred in the late Miocene in parallel with the expansion of C4 grasslands.

Impatiens tanintharyiensis (Balsaminaceae), a new species from Southern Myanmar

Phytotaxa ◽  
2017 ◽  
Vol 296 (2) ◽  
pp. 171 ◽  
Author(s):  
SAROJ RUCHISANSAKUN ◽  
PIYAKASET SUKSATHAN ◽  
TIMOTHEÜS VAN DER NIET ◽  
SAW LWIN ◽  
STEVEN B. JANSSENS
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Conservation Status ◽  
Pollination Syndrome ◽  
Bee Pollination ◽  
Molecular Phylogenetic ◽  
Nuclear Its ◽  
A New Species ◽  
Spacer Dna

Impatiens tanintharyiensis Ruchisansakun, Suksathan & Saw-Lwin from the Tanintharyi region of Southern Myanmar is described and illustrated as a new species. The presence of connate lateral united petals and a four-locular ovary, as well as results of molecular phylogenetic analyses of nuclear ITS and plastid atpB-rbcL spacer DNA sequences, suggest that the new species is a member of Impatiens section Semeiocardium (Zoll.) S.X. Yu & Wei Wang. The new species is morphologically most similar to I. spectabilis Triboun & Suksathan, but can be distinguished by its asymmetric flowers, saccate-bucciniform lower sepal, and shorter, slightly incurved spur. Floral traits, including the presence of a large floral chamber with a wide entrance, are consistent with the bee-pollination syndrome in Impatiens. Since I. tanintharyiensis is only known from two small populations, its conservation status is assessed as Endangered.

Phylogenetic Classification of Subtribe Castillejinae (Orobanchaceae)

2009 ◽  
Vol 34 (1) ◽  
pp. 182-197 ◽  
Author(s):  
David C. Tank ◽  
J. Mark Egger ◽  
Richard G. Olmstead
Keyword(s):  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Systematic Research ◽  
New Combinations ◽  
Phylogenetic Hypothesis ◽  
Molecular Systematic ◽  
Genus Level ◽  
Formal Classification ◽  
Molecular Phylogenetic

Recent molecular systematic research has indicated the need for a revised circumscription of generic boundaries in subtribe Castillejinae (tribe Pedicularideae, Orobanchaceae). Based on a well-resolved and well-supported phylogenetic hypothesis, we present a formal reclassification of the major lineages comprising the Castillejinae. Prior to this treatment, subtribe Castillejinae included Castilleja (ca. 190 spp.), Cordylanthus (18 spp.), Orthocarpus (9 spp.), Triphysaria (5 spp.), and the monotypic genera Clevelandia and Ophiocephalus. In the classification presented here, Orthocarpus and Triphysaria retain their current circumscriptions, Castilleja is expanded to include Clevelandia and Ophiocephalus, and Cordylanthus is split into three genera; a key to the genera as they are recognized here is provided. Two new combinations, Castilleja beldingii and Castilleja ophiocephala, are proposed within the expanded Castilleja. The concept of Cordylanthus is restricted to the 13 species formerly recognized as subg. Cordylanthus, while subg. Dicranostegia and subg. Hemistegia are elevated to genus level (Dicranostegia and Chloropyron, respectively). We resurrect the generic name Chloropyron for the halophytes previously recognized as subg. Hemistegia. Five new combinations are proposed for Chloropyron (Chloropyron maritimum subsp. canescens, Chloropyron maritimum subsp. palustre, Chloropyron molle subsp. hispidum, Chloropyron palmatum, and Chloropyron tecopense). In addition to the formal classification, we provide phylogenetic clade definitions for Castillejinae, each of the genera, and two additional clades that are not assigned formal ranks. Morphological characteristics used to recognize traditional groups are evaluated, and synapomorphies are discussed. Finally, the current infrageneric classifications for Castilleja and Cordylanthus are evaluated in light of the recent molecular phylogenetic analyses.

scholarly journals Phylogenetic Analyses of New Aquatic Hyphomycetes Provide Molecular Evidence for Microthyriaceae (Dothideomycetes, Ascomycota) Anamorph

2021 ◽  
Author(s):  
Min Qiao ◽  
Hua Zheng ◽  
Jishu Guo ◽  
Rafael F. Castañeda-Ruiz ◽  
Jianping Xu ◽  
...  
Keyword(s):  
Dna Sequences ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Aquatic Hyphomycetes ◽  
Ecological Niches ◽  
Molecular Evidence ◽  
New Combinations ◽  
Phylogenetic Placement ◽  
The Family

The fungal family Microthyriaceae is represented by relatively few mycelial cultures and DNA sequences. As a result, the taxonomy and classification of this group of organisms remain poorly understood. Here, based on DNA sequences at four gene fragments (nuLSU rDNA, nuSSU rDNA, TEF1 and RPB2) in our analyses of aquatic hyphomycetes from southern China, we identify and report four new genera (Antidactylaria, Isthmomyces, Keqinzhangia, Pseudocoronospora) and thirteen new species (Antidactylaria minifimbriata, Pseudocoronospora hainanensis, Isthmomyces oxysporus, I. dissimilis, I. macrosporus, I. relanceatus, Keqinzhangia aquatica, Triscelophorus anakonajensis, T. anisopterioides, T. guizhouensis, T. mugecuoensis, T. multibrachiatus, T. neoseptatus; new combinations Isthmomyces asymmetrica, I. basitruncata, I. geniculata, I. lanceata, I. minima, I. rotundata) belonging to Microthyriaceae. Our results provided the first molecular evidence of asexual morph of this family and strengthened the phylogenetic placement of the family in class Dothideomycetes. The addition of these new taxa made Microthyriaceae the largest family comprising freshwater asexual genera in Pleosporomycetidae. In addition, we confirmed the monophyly of the genus Triscelophorus, the paraphyly of the genus Isthmolongispora, and revised 6 new combinations in Isthmolongispora. ITS barcoding of 13 species were also provided to help identify aquatic hyphomycetes in the future. Our results suggest that the asexual genera and sexual genera identified so far within this family have completely different ecological niches.

scholarly journals A molecular perspective on generic concepts in the Hypotrachyna clade (Parmeliaceae, Ascomycota)

Phytotaxa ◽  
2013 ◽  
Vol 132 (1) ◽  
pp. 21 ◽  
Author(s):  
PRADEEP K. DIVAKAR ◽  
ANA CRESPO ◽  
JANO NÚÑEZ-ZAPATA ◽  
ADAM FLAKUS ◽  
HARRIE J.M. SIPMAN ◽  
...  
Keyword(s):  
Molecular Phylogeny ◽  
Phylogenetic Analyses ◽  
Ssu Rdna ◽  
New Combinations ◽  
Generic Delimitation ◽  
Rdna Sequences ◽  
Phylogenetic Studies ◽  
Molecular Phylogenetic ◽  
Alternative Hypotheses ◽  
Nuclear Its

Recently, molecular phylogenetic studies have revolutionized the generic concepts in Parmeliaceae and in lichen forming fungi in general. In the present study, the generic delimitation in the Hypotrachyna clade is revised using a molecular phylogeny of nuclear ITS, LSU and mitochondrial SSU rDNA sequences of 88 hypotrachynoid taxa. Morphological and chemical features are also revised in each group. 118 sequences are newly generated for this study. Our phylogenetic analyses show the polyphyly of Hypotrachyna as currently circumscribed which falls into four well-supported and one unsupported clade. Cetrariastrum, Everniastrum and Parmelinopsis are nested within Hypotrachyna s. lat., Parmelinopsis being also polyphyletic and nested in one of the Hypotrachyna clades. Cetrariastrum is monophyletic but clustered within Everniastrum. Two alternative hypotheses tests significantly rejected the monophyly of these three genera. As a consequence, the genera Cetrariastrum, Everniastrum, and Parmelinopsis are reduced to synonymy with Hypotrachyna. Furthermore, we here propose an alternative classification to recognize the well-supported clades at subgeneric level and leave the remaining species unclassified within the genus. Five new subgenera are proposed: Hypotrachyna subgen. Cetrariastrum, Hypotrachyna subgen. Everniastrum, Hypotrachyna subgen. Longilobae, Hypotrachyna subgen. Parmelinopsis, and Hypotrachyna subgen. Sinuosae. Forty-nine new combinations are proposed.

New combinations and names for continental American Calyptranthes (Myrtaceae: Myrcia s.l.)

Phytotaxa ◽  
2018 ◽  
Vol 373 (1) ◽  
pp. 71 ◽  
Author(s):  
ANA RAQUEL LIMA LOURENÇO ◽  
CARLOS PARRA-O. ◽  
ERANDI SÁNCHEZ-CHÁVEZ ◽  
EVE LUCAS
Keyword(s):  
Geographical Distribution ◽  
New Combinations ◽  
New Classification ◽  
Morphological Studies ◽  
Molecular Phylogenetic ◽  
The Caribbean

129 currently accepted names (all continental American Calyptranthes, but six also occurring in the Caribbean) are here transferred to Myrcia, a required step towards a new classification of the Myrcia s.l. group supported by molecular phylogenetic and morphological studies. Geographical distribution is indicated for each species.

Novelties towards a phylogenetic infrageneric classification of Baccharis (Asteraceae, Astereae)

Phytotaxa ◽  
2016 ◽  
Vol 289 (3) ◽  
pp. 285 ◽  
Author(s):  
GUSTAVO HEIDEN ◽  
JOSÉ RUBENS PIRANI
Keyword(s):  
Phylogenetic Analysis ◽  
New Taxa ◽  
New World ◽  
Molecular Phylogenetic Analysis ◽  
New Combinations ◽  
Infrageneric Classification ◽  
Molecular Phylogenetic ◽  
Genus Two

Names of new taxa, new combinations and names at new rank are proposed for subgenera and sections in Baccharis to move towards a phylogenetic infrageneric classification of this New World genus. Two earlier segregated genera and two previously recognised sections are moved to the subgeneric rank (as B. subgen. Coridifoliae, B. subgen. Heterothalamus, B. subgen. Heterothalamulopsis, and B. subgen. Oblongifoliae). Three new combinations and/or names at new rank are proposed for the following sections: B. sect. Axillares (assigned to B. subgen. Baccharis), B. sect. Heterothalamulopsis (assigned to B. subgen. Heterothalamulopsis), and B. sect. Pluricephalae (assigned to B. subgen Coridifoliae). Four new sections are described to accommodate taxa not corresponding to any previously described section: B. sect. Andina and B. sect. Illinitae (assigned to B. subgen. Baccharis), B. sect. Bradeanae (assigned to B. subgen. Heterothalamus), and B. sect. Polifoliae (assigned to B. subgen. Molina). All taxa here recognized correspond to monophyletic groups based on highly supported clades in a recent molecular phylogenetic analysis.

A synopsis of Lychnophorinae (Asteraceae: Vernonieae)

Phytotaxa ◽  
2019 ◽  
Vol 398 (1) ◽  
pp. 1 ◽  
Author(s):  
BENOÎT LOEUILLE ◽  
JOÃO SEMIR ◽  
JOSÉ R. PIRANI
Keyword(s):  
New Species ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Second Step ◽  
New Combinations ◽  
New Classification ◽  
Central Plateau ◽  
New Synonyms

A new classification of the subtribe Lychnophorinae is proposed based on the results of phylogenetic analyses. The subtribes Centratherinae and Sipolisiinae are synonyms of Lychnophorinae and three genera (Albertinia, Blanchetia, Gorceixia) are transferred to the subtribe. As now circumscribed, Lychnophorinae comprises 19 genera and 117 species distributed mostly in the Cerrado domain of the Brazilian Central Plateau. Oiospermum is synonymized under Centratherum, and Irwinia under Blanchetia. Because Lychnophora as currently circumscribed is paraphyletic, the genus is dismantled into three monophyletic genera: Lychnophora s.s., Lychnocephalus and a new genus described herein, Lychnophorella. Seven new species are described (Chronopappus lanatus, Lychnophora grisea, L. haplopappa, Lychnophorella jacobinensis, Piptolepis riparia, Prestelia espeletoidea and Proteopsis hermogenesii), 16 new combinations are proposed (Eremanthus reticulatus, E. syncephalus, Lychnocephalus humillimus, L. mellobarretoi, L. sellowii, Lychnophora hatschbachii, Lychnophorella blanchetii, L. bishopii, L. leucodendron, L. morii, L. regis, L. santosii, L. sericea, L. triflora, Piptolepis pabstii, Prestelia purpurascens) as well as eight new synonyms. We also propose a neotype for Ampherephis pulchella, an epitype for Crantzia ovata and lectotypes for 31 names including six second-step lectotypifications (Albertinia brasiliensis, A. polycephala, Ampherephis intermedia, Centratherum fruticosum, Eremanthus leucodendron, E. purpurascens, Gorceixia decurrens, Lychnophora albertinioides, L. brunioides, L. microphylla, L. pohlii, L. reticulata, L. rosmarinus var. affinis, L. rosmarinus var. normalis, L. sellowii, Piptolepis gardneri, Proteopsis sellowii, Symblomeria baldwiniana, Vanillosmopsis albertinioides, V. glomerata, V. pohlii, V. syncephala, Vernonia burchelliana, V. ericoides, V. imbricata, V. involucrata, V. leptospermoides, V. martiana, V. platycephala, V. pseudomyrtus and V. trichocarpha).

Molecular phylogeny and classification of Chelidurella Verhoeff, stat. restit. (Dermaptera: Forficulidae)

2020 ◽  
pp. 1-37
Author(s):  
Markéta Kirstová ◽  
Robin Kundrata ◽  
Petr Kočárek
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Molecular Phylogeny ◽  
Dna Sequences ◽  
Phylogenetic Analyses ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Two New Species ◽  
Molecular Phylogenetic

Abstract We present herein the first phylogenetic analysis of the genus Chelidura and the taxonomic revision of the genus Chelidurella, stat. restit., based on DNA sequences. The results confirm the generic status of Chelidurella Verhoeff, 1902 and Mesochelidura Verhoeff, 1902, and they are removed from the synonymy with Chelidura and reinstated as valid genera. Many individual Chelidurella species are defined based on the combination of a few variable characters on the pygidium and forceps, and the systematics and phylogeny of this genus are unclear. The validity of most of the species is revisited here by molecular phylogenetic analyses, and individual morphological characters are evaluated for their relevance in the identification of all described species. We describe two new species to science, Chelidurella galvagnii Kirstová & Kočárek, sp. nov. from Austria, and C. pseudovignai Kočárek & Kirstová, sp. nov. from Italy and Austria; two species, C. guentheri Galvagni, 1994 and C. tatrica Chládek, 2017 are newly synonymized. Critical diagnostic characters are illustrated, and an identification key for males of Chelidurella is provided.

Sign in / Sign up

Export Citation Format

Share Document