. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 200 um Phylum Rhodophyta Class Florideophyceae Order Corallinales Family Corallinaceae Transverse section of tetraspo- rangial conceptacle with zonately divided tetrasporangia (z). Transverse section showing sev- eral lateral fusions (f). Transverse section showing cell arrangement with trichocytes (t). Surface view of cells and large trichocytes (t). Neosiphonia sphaerocarpa Kim & Lee 1999 280 Thallus: filamentous, fine, tufted, bushy, to 2 cm high, light brown to rose-red to maroon; branching a
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 200 um Phylum Rhodophyta Class Florideophyceae Order Corallinales Family Corallinaceae Transverse section of tetraspo- rangial conceptacle with zonately divided tetrasporangia (z). Transverse section showing sev- eral lateral fusions (f). Transverse section showing cell arrangement with trichocytes (t). Surface view of cells and large trichocytes (t). Neosiphonia sphaerocarpa Kim & Lee 1999 280 Thallus: filamentous, fine, tufted, bushy, to 2 cm high, light brown to rose-red to maroon; branching alternate to somewhat dichotomous. Prostrate axis 100-210 um diam. Erect axis 60-1 50 um diam., of four pericentral cells; lateral branches 60-125 um diam., often basally constricted, replacing apical laments; cortication absent; lament scar cells common; segments () diameters long. Apical filaments deciduous, rarely to 800 um long. Holdfast initially disc- like, later attached by unicellular rhizoids; rhizoids separated from parent cell by wall, distal on pericentral cells, commonly attaching to nearby branches creating mesh- like net which traps sand. Tetrasporangia spherical, 50-60 um diam., tetrahedrally divided, as swollen spiral series in outer branchlets. Common: inconspicuous, epiphytic on larger plants or on hard surfaces, in wave- exposed areas; lower intertidal to 8 m deep. Highborne Cay distribution: only occurring in the stromatolite and thrombolite zones. Phylum Rhodophyta Class Florideophyceae Order Ceramiales Family Rhodomelaceae. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wi
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