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Pulvinularia

Generic name: PULVINULARIA Borzi, 1916. Nuovo Giorn. Bot. Ital., ser. 2, 23: 574.
Synonyms:
Diagnosis:
Type species: Pulvinularia suecica Borzi 1916. - Monotypic genus.
Descriptions:
Komárek (1992):Thallous; thallus microscopic, attached to the substrate, composed from more or less circular, discoidal, basal layer of cells with nematoparenchymatous arrangement of radially oriented, laterally confluent filaments, later slightly hemispherical; from the basal disc grow parallely and radially oriented filaments with laterally confluent sheaths. Trichomes uniserial or biserial in short segments, pseudodichotomously divaricated at the ends (branching of V-type). Sheaths more or less thick, homogeneous or indistinctly layered, colourless or yellowish, confluent. Cells rounded-irregular, blue-green. Heterocytes interca1ar, solitary. Akinetes not observed.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Reproduction by hormogonia, which develop from the apical ends of radially arranged filaments. The cells divide in young germinating hormogonia in different planes (origin of basal disc).
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Stigonemataceae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): The epiphytic type-species was described from water mosses (Fontinalis) in-littoral of one lake in Sweden.
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Pulvinularia suecica Borzi
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

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