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Stauromatonema

Generic name: STAUROMATONEMA Frémy, 1930. Arch. Bot. 3: 385.
Synonyms:
Diagnosis:
Type species: Stauromatonema viride Frémy 1930. - Three species.
Descriptions:
Komárek (1992): Filamentous - thallous; thallus gelatinous, firm, flat, crusty, composed from basal, creeping, coiled filaments, from which grow numerous erect, densely parallely oriented, not very long branches, which are repeatedly divaricated. Trichomes in creeping filaments multiserial, sometimes disintegrating, in chroococcoid mass, from which grow erect trichomes - branches (T-type of branching); erect trichomes uniseriate, repeatedly V-like true branched, branches grow more or less parallely and perpendicularly to the substrate. Sheaths thin, firm, colourless, sometimes slightly gelatinizing at sides, not or slightly lamellated, closed at the apex of young trichomes; trichomes mainly torulous, with clear constrictions at cross walls, more or less cylindrical or slightly widened to the ends, with broadly rounded terminal cells. Cells irregular rounded or barrel-shaped, isodiametric or slightly longer or shorter than wide. Heterocytes intercalar, rounded barrel- shaped. Akinetes not known.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Cells divide in different planes in basal trichomes and pseudoparenchymatous mass, but mainly crosswise in erected branches. Reproduction by solitary monoaytes (planocytes ?), which liberate from the end of branches after opening of the sheath, rarely from intercalar cells. Hormogonia and hormocysts not known.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Capsosiraceae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): On stones in springs, creeks, rarely in lake littoral. Tropical species, known from equatorial Africa and Indonesia.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Stauromatonema viride Frémy 1930
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

2.1 taxonomy: Frémy 1930, Geitler 1932, Geitler 1942, Geitler & Ruttner 1935, Komárek 1992
2.2 cytomorphology:
2.3 16S rRNA sequencing:
2.4 biology and life cycles:
2.5 ecology: