Didymodon luridus

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Identification notes

Didymodon can be a tricky genus with a lot of quite similar species, confusing many bryologists for years. D. luridus is one of the easier species to identify, with characteristically wide-based, almost triangular leaves and a rounded or blunt-tipped apex. However forms occur with narrower leaves which can easily be confused with D. nicholsonii.

It is always worth looking at leaf sections of Didymodon spp. if you have a compound microscope. In the case of D. luridus and D. nicholsonii, the costa sections look quite different (see images and refer to Tom Blockeel’s recent article, linked below.

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Distribution in Great Britain and Ireland

View distribution from the BBS Atlas 2014

Resources you may find useful

Blockeel, T.L. & Kucera, J. 2019. Notes from the BBS Workshop on Didymodon, 2018. Field Bryology 121: 23-30.

Download article

The Bryophyte identification page under Resources contains several useful keys and other information on the genus Didymodon.

Bryophyte identification resources

Similar species (to be added)

Didymodon nicholsonii

Didymodon rigidulus

Didymodon tophaceus

Orthotrichum anomalum