Can anyone identify this pond weed.

[alfvenwave]

Hello, I've just posted more detailed info on our pond in the introduction section, but was unsure whether this question would be better in this forum. I have a large 400m2 "native" pond in the UK with no introduced pond weed oxygenators - the pond is in its third year and is very healthy/clear, however this weed has recently appeared. It's slow growing and forming a thick mat along the sloping sides 6" below the water level. It pulls out very easily and seems brittle/crumbly. I want to ensure that the pond stays native and am having trouble identifying this weed. Does anyone know what it is and whether I should encourage it or whip it out? Thanks, Rob.

 

[HARO]

Looks like one of the stoneworts (Nitella sp., probably N. flexilis) Native to Europe, N. & S. America.
John

 

[alfvenwave]

Looks like one of the stoneworts (Nitella sp., probably N. flexilis) Native to Europe, N. & S. America.
John

I think you're right John - thanks for clarifying this. I understand it's supposed to be a good indicator of water quality which is brilliant news.....have a great day, Rob.