Riccia sorocarpa

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Identification notes

Definitely one of the commonest Riccia species in most areas and fortunately it is also one of the easiest to recognise. Its glaucous green colour is distinctive, as is the deeply furrowed thallus, which looks like it has been scored with a knife blade.

Two good jizz characters can be seen at the edge of the thallus, which is sharply defined and has a narrow hyaline margin. Both serve to separate it from R. glauca, another blue-green species with which it sometimes grows.

Read the Field Guide account

Distribution in Great Britain and Ireland

View distribution from the BBS Atlas 2014

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