Rhizosolenia

[gjones]

There are great numbers of these in our reservoir.

[BJ]

hi Grant,

beautifully clear photos. I especially like the first one where you can see the detailed structure of the frustule.

I think that I often miss this species in samples as it is so transparent.

It has been moved to a new genus, Urosolenia. Apparently the similarity in shape with marine Rhizosolenia species is coincidental. You can read a short account of the genus with some great SEM photos on Google Books:

Search "Round Mann Crawford Urosolenia"


Thank you for posting.

Brian

[Mitch640]

Very interesting, although I don't know what it is. You must have a good eye to have even seen it, let alone get an image of it.