Irish lichens

Leptogium lichenoides
Order: Peltigerales       Family: Collemataceae

Species: Scytinium lichenoides (Leptogium lichenoides)

Growth type foliose. BLS Burren meeting 2009
Photos: On hazel. The Burren, W Ireland.

Dark brown or grey-brown thallus, dense lobes with numerous cylindrical digitate projections on margins. Lower surface strongly ridged. Rarely fertile, apothecia red-brown with isidiate margins, the spores 5-9-septate, 33-45 x 12-15 Ám.

Occurs among moss on trees, rocks and damp soil in old woodland. Chemical reactions negative

Similar: Leptogium gelatinosum occurs on more calcareous substrates and L. pulvinatum has flattened marginal projections.

Leptogium lichenoides

Leptogium lichenoides
Photo above: Leptogium lichenoides. Glengarriff, Co. Cork. May 2009

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