Irish lichens

Nephroma laevigatum
Order: Peltigerales       Family: Nephromataceae

Species: Nephroma laevigatum

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

Large, shiny red-brown to grey-brown lobes, sometimes with small lobules on margins. Undersides whitish or buff, wrinkled. Chestnut-brown apothecia usually present on underside of longer, recurved lobes. Asci 8-spored, the spores 3-septate, colourless becoming brownish, 17-20 5-7 m. Soredia absent. Micrograph below.

Occurs in old oceanic woodlands in the west of Ireland on mossy tree trunks, damp rocks and walls. 'Old forest' indicator species.
Medulla pale yellow, K+ purple

Similar: Nephroma parile. Medulla white. Sorediate.

Nephroma laevigatum

Nephroma laevigatum

Nephroma laevigatum

Nephroma laevigatum
Nephroma laevigatum. BLS Burren meeting, April 2009

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