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

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 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 A multi-gene phylogeny of Lactifluus (Basidiomycota, Russulales) translated into a new infrageneric classification of the genus

2017 ◽  
Vol 38 (1) ◽  
pp. 58-80 ◽  
Author(s):  
E. De Crop ◽  
J. Nuytinck ◽  
K. Van de Putte ◽  
K. Wisitrassameewong ◽  
J. Hackel ◽  
...  
Keyword(s):  
Infrageneric Classification ◽  
Gene Phylogeny

Traditional Infrageneric Classification of Gymnopilus Is Not Supported by Ribosomal DNA Sequence Data

Mycologia ◽  
2003 ◽  
Vol 95 (6) ◽  
pp. 1204 ◽  
Author(s):  
Laura Guzman-Davalos ◽  
Gregory M. Mueller ◽  
Joaquin Cifuentes ◽  
Andrew N. Miller ◽  
Anne Santerre
Keyword(s):  
Dna Sequence ◽  
Ribosomal Dna ◽  
Sequence Data ◽  
Infrageneric Classification ◽  
Dna Sequence Data ◽  
Ribosomal Dna Sequence

The significance of floral features within infrageneric classification of Euonymus (Celastraceae)

Flora ◽  
2018 ◽  
Vol 242 ◽  
pp. 53-60
Author(s):  
Chi-yuan Yao ◽  
Cheng Du ◽  
Yun-juan Zuo ◽  
Quan-ru Liu ◽  
Jin-shuang Ma
Keyword(s):  
Infrageneric Classification

A revised infrageneric classification of Bellevalia Lapeyr. (Asparagaceae: Scilloideae) based on molecular analysis

Phytotaxa ◽  
2021 ◽  
Vol 525 (1) ◽  
pp. 70-84
Author(s):  
AZARNOOSH JAFARI ◽  
JAMIL VAEZI ◽  
MOHAMMAD MAHDI FORGHANIFARD ◽  
FÉLIX FOREST ◽  
JOHN C. MANNING
Keyword(s):  
Phylogenetic Analysis ◽  
Molecular Analysis ◽  
Trnl Intron ◽  
Leaf Margin ◽  
Infrageneric Classification ◽  
Flower Shape ◽  
Representative Species

Within the genus Bellevalia (Asparagaceae: Scilloideae: Hyacintheae), flower shape and colour, the ratio of leaf to scape length, and the orientation of the pedicels were traditionally used to delimit sections, subsections and species. We conducted a phylogenetic analysis of representative species from sections Bellevalia, Conicae, Nutantes and Oxydontae, representing four out of the six sections that are currently recognised, using the four chloroplast regions rbcL, matK, trnL intron, and trnL-F spacer. Our results indicate that the sections are not monophyletic as currently circumscribed. Our analyses retrieve two major, well-supported clades. The first clade (sect. Conicae) includes only species with ciliate leaves and green-veined perianth lobes, and the second clade (sect. Bellevalia) includes the species lacking these characteristics. Within the second clade, the species with yellow anthers are separated from those with violet anthers. Our molecular analysis does not support the traditional subdivisions of the genus but establishes the value of cilia on the leaf margin, green veins in the perianths lobes, and the colour of the anthers as indicators of relationships among the species. We recommend that the current four sections and six subsections of Bellevalia be reduced to two sections without subsections and we provide an updated and corrected nomenclature for these sections and subsections, designating lectotypes where necessary.

A novel phylogenetic infrageneric classification of Baccharis (Asteraceae: Astereae), a highly diversified American genus

Taxon ◽  
2019 ◽  
Vol 68 (5) ◽  
pp. 1048-1081 ◽  
Author(s):  
Gustavo Heiden ◽  
Alexandre Antonelli ◽  
José Rubens Pirani
Keyword(s):  
Infrageneric Classification
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