Systematics and Biogeography of the Red Algal Genus Yonagunia (Halymeniaceae, Rhodophyta) from the Indo‐Pacific Including the Description of Two New Species from Taiwan

2020 ◽  
Vol 56 (6) ◽  
pp. 1542-1556
Author(s):  
Showe‐Mei Lin ◽  
Olivier De Clerck ◽  
Frederik Leliaert ◽  
Ya‐Chu Chuang
Keyword(s):  
New Species ◽  
Two New Species ◽  
Red Algal ◽  
Algal Genus

Hypnea wynnei and Hypnea yokoyana (Cystocloniaceae, Rhodophyta), two new species revealed by a DNA barcoding survey on the Brazilian coast

Phytotaxa ◽  
2016 ◽  
Vol 268 (2) ◽  
pp. 123 ◽  
Author(s):  
FABIO NAUER ◽  
VALÉRIA CASSANO ◽  
MARIANA C. OLIVEIRA
Keyword(s):  
New Species ◽  
Morphological Analysis ◽  
Molecular Data ◽  
Brazilian Coast ◽  
Closely Related Species ◽  
Two New Species ◽  
Red Algal ◽  
Basal Portion ◽  
Algal Genus ◽  
Lateral Branches

Two new species of the red algal genus Hypnea (Gigartinales) are described for the southeastern coast of Brazil based on three molecular markers (COI-5P, rbcL and UPA), detailed morphological analysis, and comparison with closely related species. These species were named H. wynnei Nauer, Cassano & M.C. Oliveira and H. yokoyana Nauer, Cassano & M.C. Oliveira. Hypnea wynnei is characterized primarily by its reduced size, sub-erect tufts with few lateral branches and entangled basal portion, a thallus that is flattened only at the apical portions, and tetrasporangial sori developed only at apical portions of the branchlets. Hypnea yokoyana is characterized by its larger thallus, profuse branching, entirely terete axes, larger diameter of the main axes, and lack of entangling at its base. The molecular data support the conclusion that H. wynnei and H. yokoyana are distinct from other Hypnea species and are distantly related to Hypnea from the Brazilian coast.

Molecular data reveals two new species of Hypnea (Cystocloniaceae, Rhodophyta) from India: Hypnea indica sp. nov. and Hypnea bullata sp. nov.

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Pushpendu Kundu ◽  
Felix Bast
Keyword(s):  
New Species ◽  
Cross Section ◽  
Molecular Data ◽  
Main Axis ◽  
Sister Species ◽  
Axial Cell ◽  
Two New Species ◽  
Red Algal ◽  
Algal Genus ◽  
A New Species

Abstract We used three molecular markers (COI-5P, rbcL and UPA) to investigate the diversity of Hypnea spp., an economically important red algal genus, collected from India. Our concatenated tree (COI-5P and rbcL) supported the monophyly of two new species, Hypnea indica sp. nov. and Hypnea bullata sp. nov. H. indica diverged from its closest two sister species, Hypnea cervicornis and Hypnea tenuis (by 15.9 and 11.2%, respectively, in COI-5P; and 3.4 and 3.2% in rbcL). We describe H. indica as a new species characterised by an erect, percurrent main axis with spine-like branchlets in acute angles, straight and forked apices, axial cells surrounded by large periaxial cells or two cells similar in size to the axial cell, and the presence of lenticular thickening in the cross-section of the thallus. H. bullata diverged from its closest sister species, Hypnea brasiliensis (by 10.9% in COI-5P and 3.3% in rbcL). H. bullata is characterized by a prostrate thallus up to 1.5 cm in height, highly anastomosed, with an axial cell surrounded by similar sized, or smaller, periaxial cells, tetrasporangia present near the base of branchlets, and the presence of lenticular thickening.

Description of two new species of Ochtodes (Rhodophyta: Gigartinales) from Caribbean Mexico on the basis of morphological and molecular evidence

2016 ◽  
Vol 59 (2-3) ◽  
Author(s):  
Luz Elena Mateo-Cid ◽  
A. Catalina Mendoza-González ◽  
Abel Sentíes ◽  
Jhoana Díaz-Larrea ◽  
Deisy Y. García-López ◽  
...  
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Molecular Evidence ◽  
Two New Species ◽  
Red Algal ◽  
Algal Genus

AbstractThe species diversity of the red algal genus

scholarly journals Taxonomic Transfer of the Red Algal Genus Gloiosaccion to Chrysymenia (Rhodymeniaceae, Rhodymeniales), Including the Description of a New Species, Chrysymenia pseudoventricosa, for the Gulf of Mexico

Phytotaxa ◽  
2016 ◽  
Vol 243 (1) ◽  
pp. 54 ◽  
Author(s):  
William E Schmidt ◽  
Carlos Frederico D. Gurgel ◽  
Suzanne L. Fredericq
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Gulf Of Mexico ◽  
Caribbean Sea ◽  
Distinct Species ◽  
Lsu Rdna ◽  
Rdna Sequences ◽  
Red Algal ◽  
Algal Genus ◽  
A New Species

Gloiosaccion Harvey, with type G. brownii (Rhodymeniaceae, Rhodymeniales), is a red algal genus characterized by the presence of large, hollow and saccate vesicle-shaped thalli arising from small solid axes. Whereas Gloiosaccion has traditionally been viewed as being closely related to Botryocladia (Agardh) Kylin, a multi-marker phylogenetic analysis based on chloroplast-encoded rbcL and UPA and nuclear LSU rDNA sequences instead places Gloiosaccion brownii and G. pumila in the Chrysymenia clade that includes the generitype C. ventricosa (Lamouroux) J. Agardh. Gloiosaccion is reduced to synonymy with Chrysymenia J. Agardh, a taxonomic move first advocated by De Toni in 1900. In addition to C. brownii (Harvey) De Toni, “Gloiosaccion” brownii var. firmum Harvey and “G.” pumilum J. Agardh are recognized as the distinct species Chrysymenia coriacea comb. et stat. nov. and C. pumila (J. Agardh) Weber-van Bosse, respectively. A new species, C. pseudoventricosa sp. nov. is proposed to accommodate specimens going under the name C. ventricosa (J.V. Lamouroux) J. Agardh from the Gulf of Mexico and Caribbean Sea.

Jania (Corallinales, Rhodophyta) in southern Australia

1994 ◽  
Vol 7 (6) ◽  
pp. 605 ◽  
Author(s):  
HW Johansen ◽  
HBS Womersley
Keyword(s):  
New Species ◽  
Water Movement ◽  
Substrate Preference ◽  
Nucleate Cell ◽  
Basal Cells ◽  
Two New Species ◽  
Algal Genus ◽  
Vegetative Characters ◽  
Medullary Cells

The coralline algal genus Jania Lamouroux (tribe Janieae, subfamily Corallinoideae, family Corallinaceae) contains six species on southern Australian coasts: J. micrarthrodia Lamouroux, J. pulchella (Harvey) comb. nov., J. pusilla (Sonder) Yendo, J. verrucosa Lamouroux, and two new species, J. minuta and J. parva. These species are segregated primarily on vegetative characters pertaining to fronds, intergenicula, branching, medullary organisation, and substrate preference, with reproductive features used in some cases. Four of the species are, as far as known, endemic to southern Australia: J. minuta, J. pawa, J. pulchella, and J. pusilla. Jania minuta and J. rnicrarthrodia have evolved a unique short-segmented morphology, with intergenicula containing only one or two tiers of medullary cells each. Jania micrarthrodia is a common and conspicuous epiphyte and variable in morphology depending on degree of water movement. In J. minuta, tetrasporangia are replaced by unusual sporangia, each comprised of a large two-nucleate cell, bracketed by small, uninucleate apical and basal cells. This species also forms distinctive multicellular propagules. Jania parva has delicate fronds with dichotomies that tend to diverge widely; only bisporangial and gametangial plants have been found. Jania pulchella has two types of intergenicula, 'janioid' intergenicula which in fertile plants contain conceptacles, and basal compressed and lobed 'cheilosporoid' intergenicula; it is transferred from Cheilosporum pulchellum Harvey. Jania pusilla is usually epiphytic on Cystophora spp., and has small fronds with broad intergenicula. Jania verrucosa, the most robust species, forms dense tufts on low intertidal rocks in southern Australia and in other subtropical or temperate regions.

scholarly journals DNA Sequence Analyses Reveal Two New Species of Caloglossa (Delesseriaceae, Rhodophyta) from the Skin of West Indian Manatees

2021 ◽  
Vol 9 (2) ◽  
pp. 163
Author(s):  
D. Wilson Freshwater ◽  
Cathryn E. Miller ◽  
Thomas A. Frankovich ◽  
Michael J. Wynne
Keyword(s):  
New Species ◽  
Species Complex ◽  
Novel Species ◽  
Sequence Divergence ◽  
West Indian ◽  
Sequence Analyses ◽  
Rbcl Sequence ◽  
Two New Species ◽  
Red Algal ◽  
Mother Cells

Epizoic macroalgae collected from the skin of West Indian manatees included specimens of the red algal family Delesseriaceae. Morphological and rbcL sequence analyses indicated that these specimens represented two novel species of Caloglossa. One species, described here as Caloglossa kamiyana Freshwater, Cath.E. Miller & Frankovich sp. nov., had been previously studied and recognized as part of the C. ogasawaraensis species complex. The rbcL sequence divergence between C. kamiyana and other taxa within the complex ranged from 4.6–5.3%, and tetrasporangial mother cells are cut off from the lateral pericentral cells by oblique divisions instead of transverse divisions as in C. ogasawaraensis. The second species was resolved as a closely related sister species to C. fluviatilis, with a minimum interspecific sequence divergence of 2.0%. It was morphologically indistinguishable from C. fluviatilis except for one potential character—mostly one, instead of multiple rhizoids, developing from rhizoid-bearing pericentral and marginal wing cells. It is herein described as Caloglossa manaticola Freshwater, Cath.E. Miller & Frankovich sp. nov.

A Synopsis of Dicliptera (Acanthaceae) in Brazil, with the Description of Two New Species

2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas
Keyword(s):  
New Species ◽  
South America ◽  
The State ◽  
Northeastern Brazil ◽  
Mato Grosso ◽  
The North ◽  
New Synonyms ◽  
Two New Species ◽  
Mato Grosso Do Sul ◽  
A New Species

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.

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