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73 results for “Corallinales”
FIGURES 15–18 in Rhodolith-forming species of the subfamilies Neogoniolithoideae and Hydrolithoideae (Rhodophyta, Corallinales) from Espírito Santo State, Brazil
FIGURES 15–18. Hydrolithon sp. 15. Longitudinal sections showing cell fusions (black arrow) and rounded epithelial cells (grey arrow). Scale = 9 μm. 16. Monomerous thallus. Scale = 20 μm. 17. A tetrasporangial conceptacle with a tetrasporangial pore canal showing great thickness in tetrasporangial roof, with 8–9 cell layers. Scale = 30 μm. 18. Detail of a tetrasporangial conceptacle pore canal. Enlarged cell vertically orientated along the pore canal. Scale = 13 μm.
FIGURES 10–13. Hydrolithon rupestre. 10 in Rhodolith-forming species of the subfamilies Neogoniolithoideae and Hydrolithoideae (Rhodophyta, Corallinales) from Espírito Santo State, Brazil
FIGURES 10–13. Hydrolithon rupestre. 10. Longitudinal sections showing solitary trichocytes (white arrow), rounded to flattened epithelial cells (grey arrow), fusion cells (black arrow). Scale = 14 μm. 11. Tetrasporangial conceptacle. Scale = 15 μm. 12. Monomerous growth (white arrow). Scale = 17 μm. 13. Tetrasporangial roof detail with large cells characteristic of genus Hydrolithon. Scale = 19 μm.
FIGURES 3–6 in Rhodolith-forming species of the subfamilies Neogoniolithoideae and Hydrolithoideae (Rhodophyta, Corallinales) from Espírito Santo State, Brazil
FIGURES 3–6. Neogoniolithon cf. brassica-florida. 3. Longitudinal sections showing rounded epithelial cells (black arrow). Scale = 22 μm. 4. Monomerous, coaxial growth (black arrow). Scale = 18 μm. 5. Electron micrograph (SEM stubs: RB 480479) showing solitary trichocytes at the thallus surface (white arrow). Scale = 17 μm. 6. Cell fusions (white arrow). Scale = 6 μm.
FIGURE 4–13 in Epiphytic Jania in New Zealand: Jania sphaeroramosa sp. nov. (Corallinales, Rhodophyta)
FIGURE 4–13. Jania sphaeroramosa sp. nov. 4. View of the dichotomous branching and uniplanar arrangement (scale bar = 1 cm). 5. Entanglement of stolons around host for attachment (scale bar = 1 cm). 6. Intergeniculate and geniculate segmentation and branching (scale bar = 50 μm). 7. Single tier of elongated intergeniculate cells (scale bar = 20 μm). 8. Tetrasporangial conceptacles with 2–3 branchlets sometimes leading to other tetrasporangia (scale bar = 200 μm). 9. Tetrasporangial conceptacles showing tetraspores with zonate division (scale bar = 100 μm). 10. Terminal male conceptacles (scale bar = 100 μm). 11. Male conceptacles (scale bar = 50 μm). 12. Carposporophyte conceptacles with 2–3 branchlets (scale bar = 200 μm). 13. Carposporophytes showing carpospores (scale bar = 100 μm).
FIGURE 3 in Epiphytic Jania in New Zealand: Jania sphaeroramosa sp. nov. (Corallinales, Rhodophyta)
FIGURE 3. Holotype of Jania sphaeroramosa Twist, J.E.Sutherl. & W.A.Nelson, sp. nov. (WELT A033619 / A+B). Scale bar = 1 cm.
FIGURE 1 in Epiphytic Jania in New Zealand: Jania sphaeroramosa sp. nov. (Corallinales, Rhodophyta)
FIGURE 1. Maximum Likelihood (ML) tree constructed from psbA alignment. Approximate Likelihood Ratio Test (aLRT) values followed by ML bootstrap (%) are shown above and Bayesian Posterior Probabilities (PP) are shown below each branch. Only support values greater than 0.8 (aLRT), 80% (Bootstrap) and 0.8 (PP) are shown. Scale bar represents substitutions per site. Voucher numbers (Table 1) for new specimens are included in brackets after the name. Jania sp. nov. type locality specimen shown in bold.
FIGURE 2 in Epiphytic Jania in New Zealand: Jania sphaeroramosa sp. nov. (Corallinales, Rhodophyta)
FIGURE 2. Maximum Likelihood (ML) tree constructed from nSSU alignment. Approximate Likelihood Ratio Test (aLRT) values followed by ML bootstrap (%) are shown above and Bayesian Posterior Probabilities (PP) are shown below each branch. Only support values greater than 0.8 (aLRT), 70% (Bootstrap) and 0.8 (PP) are shown. Support values are shown if two of the values reach the cut-off. Scale bar represents substitutions per site. Voucher numbers (Table 1) for new specimens are included in brackets after the name. Jania sp. nov. type locality specimen shown in bold.
FIGURES 19–24 in Systematic survey of Lithothamnion, Melobesia and Mesophyllum species (Hapalidiaceae, Corallinales, Rhodophyta) recorded along the Atlantic coast of Mexico
FIGURES 19–24. Mesophyllum mesomorphum, Cozumel Island (ENCB 18725). 19) Habit of foliose thalli attached to red algae. 20) Section through the thallus showing a strongly coaxially medulla (brace). 21) Section through dorsal region noted the cortex (arrow). 22) Section through bisporangial conceptacle shows mature bisporangium (arrow). 23) Enlarged section through bisporangial conceptacle showing pore canal lined by elongated cells (arrow). 24) Detail of a pore canal of a multiporate roof shows from above, is surrounded by 6 rosette cells (arrows).
FIGURES 1–6 in Systematic survey of Lithothamnion, Melobesia and Mesophyllum species (Hapalidiaceae, Corallinales, Rhodophyta) recorded along the Atlantic coast of Mexico
FIGURES 1–6. Lithothamnion crispatum, Campeche Banks (ENCB 19635). 1) Habit of a plant encrusting pebbles. 2) Habit of three rhodoliths. 3) Section through the thallus showing a strongly coaxially medulla (brace). 4) Section throughout dorsal region note cellular fusion (arrow). 5) Section through mature tetrasporangial conceptacle.6) Mature male conceptacle with spermatangial filaments on the floor and roof of the chamber
FIGURES 13–14. L. sejunctum. 13 in Systematic survey of Lithothamnion, Melobesia and Mesophyllum species (Hapalidiaceae, Corallinales, Rhodophyta) recorded along the Atlantic coast of Mexico
FIGURES 13–14. L. sejunctum. 13) Section through mature tetrasporangial conceptacle with tetrasporangium (arrow). 14) Pore canal lined by elongated-shape cells (arrow). FIGURES 15–18: Melobesia membranacea, Vigia Chico, Ascension Bay (ENCB 19327). 15) Superficial view of a multiporate conceptacle. The elevated conceptacles belong to Pneophyllum sp. 16) Section through the thallus showing a monostromatic crust. 17) Section through tetrasporangial conceptacle showing sporangia with zonately arranged spores (arrow). 18) Section through the thallus showing 4-5 layers of cells near the conceptacle.
FIGURES 7–9 in Systematic survey of Lithothamnion, Melobesia and Mesophyllum species (Hapalidiaceae, Corallinales, Rhodophyta) recorded along the Atlantic coast of Mexico
FIGURES 7–9. Lithothamnion occidentale, Campeche Banks (ENCB 19646). 7) Habit of two rhodoliths. 8) Transversal Section of branches, note the medulla (arrow) and cortex. 9) Section through mature tetrasporangial conceptacle, note the tetrasporangium (arrow) and in the box at the top right note two pore canal (arrows). FIGURES 10–12: Lithothamnion sejunctum, Banco Chinchorro (ENCB 18682). 10) Habit of a plant encrusting rocks. Brace indicated a species of Lithophyllum. 11) Section through the thallus showing monomerous construction, note the medulla (brace). 12) Section through dorsal region note the cortex (arrow).
FIGURE 2 in Molecular systematics of Jania species (Corallinales, Rhodophyta) from south-eastern Australia based on cox1 and psbA DNA sequence analyses
FIGURE 2. Bayesian phylogenetic tree of Jania species (Rhodophyta) based on cox1 gene with focus on specimens from south-eastern Australia. Numbers above branches represent posterior probabilities (values <0.5 were omitted). Some branches were shortened to fit the figure. Specimens sequenced in this study marked in bold and have their herbarium code identified. Colored columns indicate species delimitation methods results: ABGD; ASAP P (p-value partition), ASAP W (w rank partition); GMYC S (single-threshold), GMYC M (multiple-threshold); PTP B (Bayesian inference), PTP M (Heuristic or Maximum Likelihood); and SPN 95% and 99% of parsimony probability limit. Black column indicates the consensus across all species delimitation results. Numbers below to each column indicate the total number of species partitions for each method or the consensus. Jania squamata in the PTP B result was divided into three different species.
FIGURE 3 in Molecular systematics of Jania species (Corallinales, Rhodophyta) from south-eastern Australia based on cox1 and psbA DNA sequence analyses
FIGURE 3. Maximum likelihood phylogeny of Jania species based on psbA gene focusing on specimens from south-eastern Australia. Numbers above branches represent non-parametric bootstrap support (values <70 omitted). Species names are followed by GenBank accession number and specimen locality (for sequences downloaded from GenBank), or species name, herbarium codes for all specimens sharing that particular haplotype, and specimen locality (marked in bold for sequences produced in this study). Scale bar = substitutions per site.
FIGURE 1 in Molecular systematics of Jania species (Corallinales, Rhodophyta) from south-eastern Australia based on cox1 and psbA DNA sequence analyses
FIGURE 1. Maximum likelihood phylogenetic tree of Jania species (Rhodophyta) based on cox1 gene with focus on specimens from south-eastern Australia. Numbers above branches represent non-parametric bootstrap support (values <70 omitted). Tree tip names are composed by species name, GenBank accession number and specimen locality (for sequences downloaded from GenBank), or species name, herbarium code for all sequenced specimens presented by that sequence, and specimen locality (for sequences produced in this study, all marked in bold). Scale bar = substitutions per site.
FIGURE 4 in Molecular systematics of Jania species (Corallinales, Rhodophyta) from south-eastern Australia based on cox1 and psbA DNA sequence analyses
FIGURE 4. Bayesian phylogenetic tree of Jania species based on psbA gene with focus on specimens from south-eastern Australia. Numbers above branches represent posterior probabilities (values <0.5 omitted). Specimens sequenced in this study are marked in bold and have their herbarium code identified. Colored columns indicate species delimitation results: ABGD; ASAP P (p-value partition), ASAP W (w rank partition); GMYC S (single-threshold), GMYC M (multiple-threshold); PTP B (Bayesian inference), PTP M (Heuristic or Maximum Likelihood); and SPN 95% and 99% of parsimony probability limit. Black column indicates the consensus across all species delimitation results. Numbers below each column indicate the total number of species partitions for each method, including the consensus.
FIGURE 5 in Molecular systematics of Jania species (Corallinales, Rhodophyta) from south-eastern Australia based on cox1 and psbA DNA sequence analyses
FIGURE 5. Maximum likelihood phylogenetic tree of Corallina species based on psbA DNA sequences. Numbers above branches represent non-parametric bootstrap support. Values <50 were omitted. Species names are followed by GenBank accession number. South-eastern Australian sequences produced in this study are marked in bold. Bossiella, Calliarthron and Arthrocardia were used as outgroups.
Figures 19–23 in DNA sequencing reveals three new species of Chamberlainium (Corallinales, Rhodophyta) from South Africa, all formerly passing under Spongites yendoi
Figures 19–23: Chamberlainium glebosum habit and vegetative anatomy. (19) Rock fragment with holotype specimen showing the region (white arrow) of the holotype from which all analyses were done (L 3986123, tetrasporangial). Scale bar = 20 mm. (20) Magnified view showing highly protuberant nature of C. glebosum holotype specimen (L 3986123). Scale bar = 2 mm. (21) Vertical section through the margin (black arrow) showing the monomerous thallus construction with plumose medulla (M) giving rise to cortical filaments (C) that terminate in a single layer of epithallial cells (black arrowhead) (UWC 15/34). Scale bar = 100 μm. (22) Vertical section of the inner thallus showing cell fusions (f) between adjacent medullary filaments (UWC 15/34). Scale bar = 10 μm. (23) Vertical section of the outer thallus showing a single layer of epithallial cells (e) subtended by a layer of subepithallial initials (i). Note the cell fusions (f) between adjacent cortical filaments (UWC 15/34). Scale bar = 20 μm.
FIGURES 45–50 in Taxonomic review of Hydrolithon samoënse (Corallinaceae, Corallinales, Rhodophyta) and other taxa found to be conspecific
FIGURES 45–50. Vegetative and tetrasporangial anatomy of Neogoniolithon rugulosum (USNC 71-53-4).
FIGURES 37–43 in Taxonomic review of Hydrolithon samoënse (Corallinaceae, Corallinales, Rhodophyta) and other taxa found to be conspecific
FIGURES 37–43. Vegetative and tetrasporangial anatomy of Neogoniolithon erosum (TRH A2-101).
FIGURE 36 in Taxonomic review of Hydrolithon samoënse (Corallinaceae, Corallinales, Rhodophyta) and other taxa found to be conspecific
FIGURE 36. Holotype specimen and slides of Neogoniolithon erosum (TRH A2-101).
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