Westella ?

[frfmfrfm]

Good morning, I have this set of cells encontado water sample filter.
I think it may be Westella.
Do you think, Messrs ?

[ruhop]

Hallo, Francisco.

I think it's Coelastrum microporum.

Greetings from the Taunus Mountains

Holger

[frfmfrfm]

Holger thank you very much for your reply.
I try to put a lot of work to learn ustes.
Regards, Francisco.

[schmidt]

may be Coelastrum pseudomicroporum (short bridges between the cells) or Coelastrum astroideum (cells directly connected)

[frfmfrfm]

Schmidt thank you very much for the explanations of the bridges.
Regards, Francisco.