kereddot's picture

DSC_8570

Observed: 9th August 2012 By: kereddotkereddot’s reputation in Plantskereddot’s reputation in Plants
DSC_8570
Description:

Is this Amphibious Bistort?

Identifications
Species interactions

No interactions present.

Species with which Amphibious Bistort (Persicaria amphibia) interacts

Comments

Jonathan's picture

potemogeton or amphibious

potemogeton or amphibious bistort

Jonathan
University of Edinburgh and Biodiversity Observatory (OU)

ophrys's picture

Potamogeton

Potamogeton is a genus of Pondweeds, whose leaves look superficially similar to Amphibious Bistort. As far as I know, it is not another name for Amphibious Bistort.

Edit: Sorry, I might have misunderstood...I though you were offering alternative names, but probably it was alternative identifications! ;)

Ian
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lavateraguy's picture

Potamogeton vs Persicaria

Some species of pondweed, especially Potamogeton natans, are superficially similar to the aquatic form of Persicaria amphibia, both in the habit and shape of the foliage, and in the size and shape of the inflorescence. So it can be hard to tell them apart at a distance.

If you can get a close enough look at a leaf (I've been reduced to using cameras at maximum zoom before) Persicaria amphibia has pinnate venation, and Potamogeton natans has parallel venation.

I think that the photograph above is Persicaria amphibia, but I can't put my finger on why it is.

Jonathan's picture

Yes, those were alternatives.

Yes, those were alternatives. I was viewing this observation in the new Android app (test version) and entering the comment from there, so being economical with words.

Jonathan
University of Edinburgh and Biodiversity Observatory (OU)

cicuta58's picture

Flowers

I would have thought the bright pink flowers spikes are a good indicator of Persicaria amphibia!

cicuta58

Jonathan's picture

Yup!

Yup!

Jonathan
University of Edinburgh and Biodiversity Observatory (OU)