Infrageneric classification of Agave L. (Asparagaceae: Agavoideae / Agavaceae): a nomenclatural assessment and updated classification at the rank of section, with new combinations

Bradleya ◽  
2019 ◽  
Vol 2019 (37) ◽  
pp. 240 ◽  
Author(s):  
Joachim Thiede ◽  
Gideon F. Smith ◽  
Urs Eggli
Keyword(s):  
New Combinations ◽  
Infrageneric Classification

scholarly journals Additional new combinations in Sesamum L. (Pedaliaceae: Sesameae)

Bothalia ◽  
2018 ◽  
Vol 48 (1) ◽  
Author(s):  
John C. Manning ◽  
Anthony R. Magee
Keyword(s):  
Relevant Literature ◽  
New Combination ◽  
New Combinations ◽  
Infrageneric Classification ◽  
African Flora

Background: Ongoing systematic studies in the African flora necessitate periodic nomenclatural adjustments and corrections.Objectives: To effect requisite nomenclatural changes.Method: Relevant literature was surveyed and requisite nomenclatural transfers provided.Results: The new combination Sesamum byngianum Christenh. proposed for Josephinia africana Vatke is superfluous as an available synonym exists.Conclusions: The new combination Sesamum rosaceum (Engl.) J.C. Manning Magee is also provided for Josephinia africana Vatke. Three new sectional combinations are provided to accommodate the species previously placed in Ceratotheca Endl., Josephinia Vent. and Dicerocaryum Bojer in the current infrageneric classification of Sesamum.

Sectional names in the genus Hieracium(Asteraceae) sensu stricto

1998 ◽  
Vol 55 (3) ◽  
pp. 417-441 ◽  
Author(s):  
C. A. Stace
Keyword(s):  
Sensu Stricto ◽  
New Combinations ◽  
Infrageneric Classification ◽  
Informal Groups

The literature from 1794 to the present on the infrageneric classification of Hieracium L. sensu stricto is analysed. The 38 informal groups recognized in Flora Europaea by Sell & West (1976) are considered as sections, and the correct name for each at that rank is listed, with basionym and synonymy. The 38 names include three new combinations and four new sections.

scholarly journals Alpinia (Zingiberaceae): A Proposed New Infrageneric Classification

1990 ◽  
Vol 47 (1) ◽  
pp. 1-75 ◽  
Author(s):  
R. M. Smith
Keyword(s):  
New Guinea ◽  
New Combinations ◽  
Infrageneric Classification ◽  
Distribution Maps ◽  
Number Of Species ◽  
Wallace’S Line

K. Schumann's classification of Alpinia (Zingiberaceae), which subdivided the genus into five subgenera and 27 sections, was based, in the main, on the character of the secondary bracts (bracteoles). It is here proposed that the subgenera be reduced to two—Alpinia (7 sections and 10 subsections) and Dieramalpinia (4 sections and 2 subsections), and that the character of the labellum (petaloid or non-petaloid) be used as the main differentiating criterion. Such a classification shows the centre of distribution of subgen. Alpinia, in which the labellum is petaloid, to lie north of the equator; subgen. Dieramalpinia, in which the labellum is non-petaloid, or rarely so at the apex only, is now excluded from continental Asia and has its main concentration east of Wallace's line with its greatest number of species in New Guinea. Stigma types have been examined when possible and, so far, they substantiate the proposed classification.Keys to the subgenera, sections and subsections, together with distribution maps are provided. In Appendix 1 all published names in Alpinia are listed and annotated. Appendix 2 gives a key to the terminally-flowered genera of subfamily Alpineae; this is followed by five new names and six new combinations in Alpinia while A.cordylinoides is transferred to Riedelia.

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.

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.

Paepalanthus fabianeae (Eriocaulaceae): A New Microendemic Species from a Morphologically Coherent Clade

2020 ◽  
Vol 45 (4) ◽  
pp. 794-801
Author(s):  
Caroline Oliveira Andrino ◽  
Marcelo Fragomeni Simon ◽  
Jair Eustáquio Quintino Faria ◽  
André Luiz da Costa Moreira ◽  
Paulo Takeo Sano
Keyword(s):  
New Species ◽  
Iucn Red List ◽  
Phylogenetic Position ◽  
Similar Species ◽  
Infrageneric Classification ◽  
Espinhaço Range ◽  
Nuclear Its ◽  
Two Populations

Abstract—We describe and illustrate Paepalanthus fabianeae, a new species of Eriocaulaceae from the central portion of the Espinhaço Range in Minas Gerais, Brazil. Previous phylogenetic evidence based on analyses of nuclear (ITS and ETS) and plastid (trnL-trnF and psba-trnH) sequences revealed P. fabianeae as belonging to a strongly supported and morphologically coherent clade containing five other species, all of them microendemic, restricted to the Espinhaço range. Due to the infrageneric classification of Paepalanthus being highly artificial, we preferred not assigning P. fabianeae to any infrageneric group. Paepalanthus fabianeae is known from two populations growing in campos rupestres (highland rocky fields) in the meridional Espinhaço Range. The species is characterized by pseudodichotomously branched stems, small, linear, recurved, and reflexed leaves, urceolate capitula, and bifid stigmas. Illustrations, photos, the phylogenetic position, and a detailed description, as well as comments on habitat, morphology, and affinities with similar species are provided. The restricted area of occurrence allied with threats to the quality of the habitat, mainly due to quartzite mining, justifies the preliminary classification of the new species in the Critically Endangered (CR) category using the guidelines and criteria of the IUCN Red List.

scholarly journals A framework infrageneric classification of Carex (Cyperaceae) and its organizing principles

2020 ◽  
Author(s):  
Eric H. Roalson ◽  
Pedro Jiménez‐Mejías ◽  
Andrew L. Hipp ◽  
Carmen Benítez‐Benítez ◽  
Leo P. Bruederle ◽  
...  
Keyword(s):  
Infrageneric Classification ◽  
Organizing Principles

scholarly journals Pollen morphology of Iranian Dracocephalum L. (Lamiaceae) and its taxonomic significance

2015 ◽  
Vol 22 (2) ◽  
pp. 99-110 ◽  
Author(s):  
Maryam Naderifar ◽  
Ali Sonboli ◽  
Abbas Gholipour
Keyword(s):  
Electron Microscopy ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Polar View ◽  
Taxonomic Significance ◽  
Infrageneric Classification ◽  
Exine Ornamentation ◽  
Plant Taxon ◽  
Scanning Electron

Pollen morphology of 11 Iranian Dracocephalum L. species was investigated using light and scanning electron microscopy to evaluate their taxonomic significance for the infrageneric classification of the genus. Pollen grains of all examined taxa were isopolar, hexacolpate, circular in polar view and spheroidal to prolate in equatorial view (P/E = 1.0?2.0). The smallest pollen grains were observed in D. aucheri (P = 29.7 ?m, E = 22.6 ?m), while the largest pollen was found in D. lindbergii (P = 45.1 ?m, E = 33.7 ?m). The highest and lowest apocolpium index (AI) were measured in D. aucheri (AI = 0.27) and D. surmandinum (AI = 0.08), respectively. Colpus membrane was egranulate in all examined species except for D. multicaule and D. ghahremanii. The main exine ornamentation type was characterized as bireticulate including five different subtypes. The results revealed that the exine ornamentation is a diagnostic character useful for the classification of Dracocephalum.Bangladesh J. Plant Taxon. 22(2): 99-110, 2015 (December)

scholarly journals Solidago ×snarskisii nothosp. nov. (Asteraceae) from Lithuania and its position in the infrageneric classification of the genus

Phytotaxa ◽  
2016 ◽  
Vol 253 (2) ◽  
pp. 147 ◽  
Author(s):  
ZIGMANTAS GUDŽINSKAS ◽  
EGIDIJUS ŽALNERAVIČIUS
Keyword(s):  
Natural Hybrid ◽  
Infrageneric Classification ◽  
Solidago Virgaurea

A natural hybrid between the native Solidago virgaurea and the alien invasive S. gigantea, recorded in South Lithuania, is described as S. ×snarskisii nothosp. nov. A new nothosubsection, Solidago sect. Solidago nothosubsect. Triplidago nothosubsect. nov., is proposed to accommodate this hybrid and S. ×niederederi.

scholarly journals Further extensions of Clifford circuits and their classical simulation complexities

2017 ◽  
Vol 17 (3&4) ◽  
pp. 262-282
Author(s):  
Dax E. Koh
Keyword(s):  
Quantum Circuit ◽  
Complete Classification ◽  
Polynomial Hierarchy ◽  
New Combinations ◽  
Computational Power ◽  
Classical Simulation

Extended Clifford circuits straddle the boundary between classical and quantum computational power. Whether such circuits are efficiently classically simulable seems to depend delicately on the ingredients of the circuits. While some combinations of ingredients lead to efficiently classically simulable circuits, other combinations, which might just be slightly different, lead to circuits which are likely not. We extend the results of Jozsa and Van den Nest [Quant. Info. Comput. 14, 633 (2014)] by studying two further extensions of Clifford circuits. First, we consider how the classical simulation complexity changes when we allow for more general measurements. Second, we investigate different notions of what it means to ‘classically simulate’ a quantum circuit. These further extensions give us 24 new combinations of ingredients compared to Jozsa and Van den Nest, and we give a complete classification of their classical simulation complexities. Our results provide more examples where seemingly modest changes to the ingredients of Clifford circuits lead to “large” changes in the classical simulation complexities of the circuits, and also include new examples of extended Clifford circuits that exhibit “quantum supremacy”, in the sense that it is not possible to efficiently classically sample from the output distributions of such circuits, unless the polynomial hierarchy collapses.

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