Order: Lecanorales Family: Stereocaulaceae
Species: Stereocaulon dactylophyllum
Photos: On upland rock. Glengarriff woods, Co. Cork, SW Ireland.
Identified by John Douglass
Primary thallus not persisting. Pale grey-green or yellowish-white erect or spreading podetia, often forming tufts. Irregularly branched with numerous cylindrical phyllocladia becoming coralloid and finger-like when mature. Cephalodia inconspicuous, infrequent or absent. Small terminal apothecia are frequent, brown, +/- convex.
Found on siliceous, +/- metal-rich rocks. Scattered distribution in Ireland. Thallus K+ yellow, C-, KC-, P+ orange, UV-
Similar: Stereocaulon evolutum
Stereocaulon dactylophyllum November 2009