Grimmia tergestina

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Identification notes

A rather rare and eye-catchingly hoary-leaved species, and one of a select band of 4 calcicoles in the 29 British and Irish species of Grimmia. It does not have capsules.

Its habitat will provide the biggest clue to its identity – it is mostly confined to soft Jurassic oolitic limestone (Bath Stone) in the Cotswolds, a habitat unlikely to appeal to any other Grommia species except the ubiquitous G. pulvinata and, more rarely, G. dissimulata, which is much less hoary-looking and strongly resembles G. trichophylla.

G. tergestina looks most similar to G. laevigata, but that species is a calcifuge and will not be found on basic substrates.

Distribution in Great Britain and Ireland

View distribution from the BBS Atlas 2014

Resources you may find useful

The Bryophyte identification page under Resources contains additional information on the genus Grimmia.

Bryophyte identification resources

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