Toninia sedifolia

This very rare crustiose lichen is thought to be locally abundant on calcareous soils, and lime mortar crevices.  The British Lichen Society has 25 historic records for this species throughout the Yorkshire Dales National Park, the most recent being in 2011. Its current status is not known.

At risk?

The national population of this lichen declined. The causes are currently unknown. It is now a UK and local priority species for biodiversity action.

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There is a freshness and at times a undefineable fragrance to the air at high altitude in the Pennines. Joan E. Duncan & R.W.Robson

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