Typification of Linnaean names relevant to algal nomenclature

Spencer, Mark A.; Irvine, Linda M.; Jarvis, Charles E.

doi:10.1002/tax.581023

Cited by 16 publications

(7 citation statements)

References 48 publications

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“…As in previous multigene phylogenies [ 5 , 23 , 24 ], our phylogenetic analyses robustly resolved that three volvocacean genera Volvox , Pleodorina , and Eudorina are not monophyletic, and the lectotype species V . globator [ 45 ] is robustly separated from Volvox sect. Merrillosphaera sensu Smith ( Fig 2 ).…”

Section: Discussionmentioning

confidence: 99%

Delineating a New Heterothallic Species of Volvox (Volvocaceae, Chlorophyceae) Using New Strains of “Volvox africanus”

et al. 2015

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The volvocine algae represent an excellent model lineage in which to study evolution of female and male genders based on comparative analyses of related species. Among these species, Volvox carteri has been extensively studied as a model of an oogamous and complex organism. However, it may have unique derived features that are not present in other species of Volvox. Therefore, information regarding the characteristics of sexual reproduction of other species of Volvox is also important. In 1971, Starr studied four types of sexuality in several global strains identified as Volvox africanus; however, further taxonomic studies of these strains have been lacking, and strains of three of the four sexual types are not available. Here, we studied the morphology, sexual reproduction, and taxonomy of two V. africanus-like species isolated recently from Lake Biwa, Japan. These two species were very similar to two sexual types described by Starr in 1971: one producing dioecious sexual spheroids in heterothallic strains and the other forming both male spheroids and monoecious spheroids in a single strain. The former species produced zygotes with a reticulate cell wall, whereas a smooth zygote wall was observed in the latter species as in V. africanus previously reported from various localities around the world. Our multigene phylogenetic analysis demonstrated that these are sister species to each other. However, the presence of a compensatory base change in the most conserved region of the secondary structure of nuclear ribosomal DNA internal transcribed spacer-2, hybrid inviability demonstrated by intercrossing experiments, and morphological differences in the density of abutment between the gelatinous material of adjacent cells (individual sheaths) in the spheroid supported the recognition of the two species, V. africanus having a smooth zygote wall and V. reticuliferus Nozaki sp. nov. having a reticulate zygote wall.

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Section: Discussionmentioning

confidence: 99%

Delineating a New Heterothallic Species of Volvox (Volvocaceae, Chlorophyceae) Using New Strains of “Volvox africanus”

et al. 2015

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“…The exact locality of these specimens is not clear, and different localities have been mentioned by different authors: Cape of Good Hope by Hooker (1847); Kerguelen or Crozet Islands by Setchell (1932); Tristan da Cunha, Gough Island, or Falkland Islands by Womersley (1954). As the locality cannot be designated, a neotype has been selected from the western Falkland Islands, King George’s Sound (Spencer et al. 2009).…”

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confidence: 99%

Dna Barcoding and Genetic Divergence in the Giant Kelp Macrocystis (Laminariales)1

Macaya

Zuccarello

2010

Journal of Phycology

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The brown alga Macrocystis C. Agardh is widely distributed throughout the cold temperate waters of the Northern and Southern hemispheres, forming ecologically diverse and productive kelp forests. The taxonomy of this alga has been under constant discussion. Since the first description, species have been mostly described by holdfast and blade morphology; however, the importance of these taxonomic characters has been questioned. Based on a morphological study, the genus has recently been synonymized into a single species, M. pyrifera (L.) C. Agardh, but additional genetic evidence is still lacking. Using the “DNA‐barcoding” gene (COI), we examined the taxonomy of Macrocystis collected from 19 sites worldwide, covering the distribution of the four ecomorphs (M. “pyrifera,” M. “angustifolia,” M “integrifolia,” and M. “laevis”). Our molecular data strongly support the recognition of a single species; therefore, the genus should contain only one species, M. pyrifera, the oldest name. Results also reveal shared haplotypes in several distant sites around the Southern Hemisphere and very low variability among samples. Additionally, samples of the ecomorphs M. “integrifolia” and M. “pyrifera” from a sympatric population in California had the same haplotype. The revised taxonomy changes questions of Macrocystis distribution from interspecific dispersal and evolutionary questions to intraspecific ecological questions on the maintenance of Macrocystis in certain environments that produce particular morphologies.

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“…The lectotypification and epitypification of Mesophyllum lichenoides parallels that proposed in Spencer et al (2007) …”

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confidence: 73%

The genus Mesophyllum (Hapalidiaceae, Corallinales, Rhodophyta): typification update

Woelkerling

Irvine

2007

Phycologia

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The 1986 neotypification of Mesophyllum lichenoides (J. Ellis) Me. Lemoine, type species of Mesophyllum (Hapalidiaceae, Corallinales, Rhodophyta), has to be superseded because the International Code of Botanical Nomenclature rules governing the selection of types have changed, and the new rules are retroactive. In accordance with the present rules, an illustration in the original account of the species is designated here as lectotype, and the superseded neotype is designated here as epitype. Relevant historical information and nomenclatural details associated with these changes are presented.

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Typification of Linnaean names relevant to algal nomenclature

Cited by 16 publications

References 48 publications

Delineating a New Heterothallic Species of Volvox (Volvocaceae, Chlorophyceae) Using New Strains of “Volvox africanus”

Delineating a New Heterothallic Species of Volvox (Volvocaceae, Chlorophyceae) Using New Strains of “Volvox africanus”

Dna Barcoding and Genetic Divergence in the Giant Kelp Macrocystis (Laminariales)1

The genus Mesophyllum (Hapalidiaceae, Corallinales, Rhodophyta): typification update

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