Revision of Batrachospermum Section Virescentia (Batrachospermales, Rhodophyta) with the Establishment of the New Genus, Virescentia Stat. nov.

  title={Revision of Batrachospermum Section Virescentia (Batrachospermales, Rhodophyta) with the Establishment of the New Genus, Virescentia Stat. nov.},
  author={Orlando Necchi and Douglas de Castro Agostinho and Morgan L. Vis},
  journal={Cryptogamie, Algologie},
  pages={313 - 338}
Abstract In recent years, sections of the paraphyletic genus Batrachospermum have been investigated using DNA sequence data, as well as morphology and some have been raised to genera in order to resolve this paraphylly. The species of Batrachospermum section Virescentia form a well-supported clade and we propose the raising of this section to the genus Virescentia stat. nov. In addition, we re-evaluated the characters used to circumscribe species by reexamination of type specimens and new… 
Revision of Batrachospermum section Macrospora (Batrachospermales, Rhodophyta) with the establishment of the new genus Montagnia
Within the new genus, Montagnia is proposed, the characters used to circumscribe species were re-evaluated by examining type specimens as well as samples from North and South America, and species delimitation methods did not suggest that more than one species is justified.
Paludicola gen. nov. and revision of the species formerly in Batrachospermum section Turfosa (Batrachospermales, Rhodophyta).
Substantial genetic variation within the Batrachospermales genus was discovered and 12 species are recognized based on DNA sequence data as well as morphological characters and geographic distribution.
Virescentia guangxiensis (Batrachospermales, Rhodophyta): a new freshwater red algal species from South China
This study expands the known species diversity and geographical distribution of freshwater Rhodophyta in China by reporting the first species of the order Batrachospermales reported in Guangxi and the secondspecies of the genus Virescentia reported in China.
A new species of the genus Sheathia (Batrachospermaceae, Rhodophyta) from Japan
Sheathia yoshizakii is the first Sheathia species confirmed by DNA sequence data in Japan and is characterized by homocortication, a carpogonium with clavate to lanceolate trichogyne, and exerted carposporophytes.
Diversity of Batrachospermales (Rhodophyta) in the Iberian Peninsula
Seven taxa reported in the region using current taxonomy are confirmed with sequence data and morphology, and biogeographic trends show a flora with most species being well represented in parts of Europe, two taxa that are shared between Europe and North America, and one cosmopolitan species.
Kumanoa chaugulei (Batrachospermales, Rhodophyta), a new species of freshwater red algae from the Western Ghats, India
Kumanoa chaugulei is described from Idamalayar, a major tributary of Periyar River flowing through the state of Kerala, India, based on morphological and molecular evidence and is likely to be endemic to the Western Ghats.
A New Species of Kumanoa (Batrachospermales, Rhodophyta) from Baiyun Mountain, Guangdong, China
A new Kumanoa species is described and illustrated from Baiyun Mountain, Guangdong, China, based on morphological observations and phylogenetic analysis, which places K. baiyunensis in a well-supported clade.
The freshwater red algae (Batrachospermales, Rhodophyta) of Africa and Madagascar I. New species of Kumanoa, Sirodotia and the new genus Ahidranoa (Batrachospermaceae)
Four new species and one new genus of freshwater red algae from the Batrachospermales are described, based on morphological and molecular evidence, among the first new descriptions since 1899 from the African continent and since 1964 from Madagascar.
Phylogenetic, evolutionary, and biogeographic origin of the genus Sheathia (Batrachospermales, Rhodophyta)
Molecular sequences of rbc L, COI-5P, and psb A were used to investigate the phylogenetic, evolutionary, and biogeographic origin of the genus Sheathia, and three molecular markers supported that the two gametophyte stage specimens belong to S. longipedicellata.
Survey of Freshwater Red Algae from the Batrachospermales (Rhodophyta) in South Carolina
Abstract Freshwater red algae are important components of the algal flora in streams and rivers with high water quality. The order Batrachospermales is the most species-rich portion of the red algal


Sections Setacea and Virescentia of Batrachospermum differ in whorl size, ratio of carposporophyte height towhorl diameter, and trichogyne stalking; hence, they continue to recognize them as being distinct taxonomic entities as originally described.
Systematics of the section Virescentia of the genus Batrachospermum (Batrachospermales, Rhodophyta) in Brazil
Abstract: This study evaluated the species level taxonomy and phylogenetic relationships among species of the section Virescentia of the genus Batrachospermum focusing on specimens from Brazil and
Revision of section Setacea of the genus Batrachospermum (Batrachospermales, Rhodophyta) with emphasis on specimens from Brazil
The analyses of rbcL and cox1 sequences revealed that section Setacea forms a well-supported clade, which was positioned close but clearly separated from some species of Batrachospermum usually called group ‘Australasica’.
Distribution and systematics of Batrachospermum (Batrachospermales, Rhodophyta) in North America. 9. Section Batrachospermum: description of five new species
Five new species belonging to Batrachospermum section Batrachespermum are described from North America, with unique forked trichogynes and spermatangia on one-celled involucral filaments.
Molecular and morphological evidence for Sheathia gen. nov. (Batrachospermales, Rhodophyta) and three new species
It is found that heterocortication, the presence of both cylindrical and bulbous cells on the main axis, is an underlying synapomorphy of this clade Batrachospermum section Helminthoidea.
Nocturama gen. nov., Nothocladus s. lat. and other taxonomic novelties resulting from the further resolution of paraphyly in Australasian members of Batrachospermum (Batrachospermales, Rhodophyta)
A new genus, Nocturama, is proposed for a clade of Batrachospermum antipodites specimens based on the well‐resolved phylogeny and improved statistical support values for most nodes showed, providing a framework for taxonomic revision.
DNA barcoding of select freshwater and marine red algae (Rhodophyta)
First COI sequences from European material of Batrachospermum helminthosum and B. gelatinosum are presented and compared with equivalent data from North America, suggesting cryptic diversity in at least the former species.
It is suggested that several taxonomic characteristics (sexuality, point of origin of carpogonium‐bearing branches, and trichogynes with or without basal knobs or branching) is not fixed genetically but is affected by environmental conditions.
Comparison of three organelle markers for phylogeographic inference in Batrachospermum helminthosum (Batrachospermales, Rhodophyta) from North America
The UPA gene is comparable to the cox2–3 spacer for phylogeographic studies as the haplotype networks were similar and showed the same geographic patterns, and it is concluded that this marker may be more appropriate for studying interspecific variation.
Contrasting intra versus interspecies DNA sequence variation for representatives of the Batrachospermales (Rhodophyta): Insights from a DNA barcoding approach
A number of batrachospermalean taxa worthy of more detailed DNA barcode study are revealed, and it is predicted that such research will have a substantial effect on the taxonomy of species within the BatrachOSpermales in the future.