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8 results for “Osmundea”
FIGURE 4 in Genetic investigation of three type specimens of Osmundea (Rhodomelaceae, Rhodophyta) from the Gulf of California, Mexico and California, USA
FIGURE 4. RaxML phylogram of fifteen Osmundea specimens sequenced in this study based on the rbcL gene sequences under the GTR + gamma model. Bootstrap values and Bayesian posterior probabilities are shown along the branches. Fully supported branches (bootstrap 100% and 1.0 Bayesian posterior probabilities) are indicated with an *.
FIGURE 2 in Genetic investigation of three type specimens of Osmundea (Rhodomelaceae, Rhodophyta) from the Gulf of California, Mexico and California, USA
FIGURE 2. Isotype specimen of Laurencia sinicola, UC 2041541, collected by Marchant and analyzed in this study. Bar = 3 cm.
FIGURES 9–12 in Osmundea sanctarum sp. nov. (Ceramiales, Rhodophyta) from the southwestern Atlantic Ocean
FIGURES 9–12. Reproductive morphology of tetrasporangial Osmundea sanctarum plants (SP! 427821). Fig. 9. Tetrasporangial plant showing fertile branchlets (arrows) (3 mm). Fig. 10. Detail of tetrasporangial branchlets (arrows) (1 mm). Fig. 11. Longitudinal section through an apical portion of tetrasporangial branchlet showing tetrasporangia (arrows) originating from cortical cells (100 µm). Fig. 12. Detail of a stalk cell (stk) with two pre-sporangial cover cells (pr), tetrasporangium (te) and one post-sporangial cover cell (po) (250 µm).
FIGURES 2–8 in Osmundea sanctarum sp. nov. (Ceramiales, Rhodophyta) from the southwestern Atlantic Ocean
FIGURES 2–8. Osmundea sanctarum: vegetative morphology. Fig. 2. Representative plant. Holotype (SP! 427820) (5 mm). Fig. 3. Detail of a branch with secondary small holdfast (arrow) (2 mm). Fig. 4. Transverse section of the upper portion of a branch (100 µm). Fig. 5. Transverse section showing two axial cells (a), each of which has two pericentral cells (p) and a basal trichoblast cell (bt) (50 µm). Fig. 6. Transverse section of main axes (100 µm). Fig. 7. Detail of transverse section of a branch showing external cortical layer with translucent cells (25 µm). Fig. 8. Translucent cortical cells in surface view (arrows) (25 µm).
FIGURE 1 in Osmundea sanctarum sp. nov. (Ceramiales, Rhodophyta) from the southwestern Atlantic Ocean
FIGURE 1. Southern coast of São Paulo State, showing the Laje de Santos Marine State Park, including bathymetric lines (20 m depth), Laje de Santos, Calhaus and four reefs (Brilhante, Bandolim, Sul and Novo). The arrows show the collection sites.
FIGURE 13 in Osmundea sanctarum sp. nov. (Ceramiales, Rhodophyta) from the southwestern Atlantic Ocean
FIGURE 13. Bayesian phylogram inferred from analyses of rbcL sequences for 35 Laurencia complex taxa and two outgroup species. Numbers above branches correspond to support values for Bayesian inference posterior probability/maximum likelihood bootstrap/ and maximum parsimony bootstrap, respectively. Bold lines indicate a fully supported node in all three analyses. Taxa marked in bold indicate newly determined sequences.
FIGURE 3 in Genetic investigation of three type specimens of Osmundea (Rhodomelaceae, Rhodophyta) from the Gulf of California, Mexico and California, USA
FIGURE 3. Holotype specimen of Laurencia scrippsensis, UC 685720, collected by E. Y. Dawson and analyzed in this study. Bar = 3 cm.
FIGURE 1 in Genetic investigation of three type specimens of Osmundea (Rhodomelaceae, Rhodophyta) from the Gulf of California, Mexico and California, USA
FIGURE 1. Isotype specimen of Laurencia crispa, UC 2041484, collected by G. J. Hollenberg and analyzed in this study. Bar = 3 cm.
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