• Scoliciosporum chlorococcum (Graewe ex Stenh.) Vězda
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Scoliciosporum chlorococcum
© Mike Simms
Scoliciosporum chlorococcum
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(Map updated: 11 August 2009)

This tiny, epiphytic crustose lichen of large twigs and branches would most probably need to be collected for certain identification. Although fairly well distributed, the small branches of acid-barked trees such as oak would first need to be scanned with a hand lens looking carefully in the gaps between foliose lichens for signs of the dirty grey-green, granular thallus and minute, convex, shiny red-brown to brown-black discs (0.2-0.3mm diam.). Under the microscope a squash of the disc will show the spores to be spindly and mostly seven-septate.

Key characteristics

  • Granular, green-black thallus (about 0.5-2.0cm in extent) scattered with neat, convex, shiny red-brown discs
  • Spores straight, slightly curved or spindle-like, seven-septate.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Scoliciosporum chlorococcum (Graewe ex Stenh.) Vězda. [In] LichenIreland. Accessed on 2020-08-15.