The extinct genus ''Hedstroemia'' was once thought to be a
rivulariacean cyanobacterium. It forms oval blobs composed of sinuous tubes that have rounded outlines and occurs in conjunction with ''
Solenopora''.
''Hedstroemia'' was formerly assigned to the now obsolete taxon
porostromata
"Porostromata" is an antiquated form taxon that refers to fossil cyanobacteria. The term porostromate is also used as a descriptor of textures and microstructure of Stromatolite, stromatolites and Oncolite, oncolites which contain tubules or othe ...
.
In 2020, the genus was assigned to the cyanobacteria order
Nostocales
The Nostocales are an order of cyanobacteria
Cyanobacteria ( ) are a group of autotrophic gram-negative bacteria that can obtain biological energy via oxygenic photosynthesis. The name "cyanobacteria" () refers to their bluish green (c ...
.
References
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Ulvophyceae genera
Bryopsidales
{{Ulvophyceae-stub