- Pertusaria subdubia Nyl., W. Nylander: Flora (Regensburg) 63, 389 (1880). - Stereocaulon corallinum (L.) Schrad., H. A. Schrader: Spic. Flor. Germanicae I, 113 (1794)
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G. Follmann
593
1985-06-00 - 1985-06-01
1985-06
Germany, Rhineland-Palatinate, Central Eifel Mountains ("KYllburger Waldeifel"), District of Gerolstein, Nature Reserve Hundsbachtal north of Birresborn
390-410 meters
390-410 m.
forming thick cracked crusts on vertical or somewhat overhanging faces of basaltic blocks in a Tertiary lava flow, here and there associated with Diploschistes scruposus (Schreb.) Norm., Pertusaria lactea (Ach.) Arn., Stereocaulon dactylophyllum Floerke etc. (Pertusarietum corallinea Frey), NW exposition, generally rare, but on the spot abundant