Family: Verrucariaceae Species: Normandina chlorococca Growth type crustose. Confirmed by Neil Sanderson Photos: Over moss on Cordaline. Skibbereen, Co. Cork, SW Ireland. N.B. Corticolous GBI populations previously recorded as Normandina acroglypta are N. chlorococca The uneven greyish-green thallus forms a diffuse, granular crust with local, poorly defined, concolorous soralia. Young aureoles not subsquamulose. Asci are 8-spored, spores 5-8 septate, (22.5-)27-36(-39) x 6-8(-9) µm. Micrograph below. Chemistry negative Found overgrowing moss and liverworts on (usually) base-rich bark. Widespread in Ireland but distribution is uncertain owing to previous confusion with N. acroglypta. This map is a composite of both species Normandina acroglypta occurs on dead bryophytes on rock, very young areoles are subsquamulose and slightly lobed at margins

Micrograph

Normandina chlorococca May 2010