Staurothele succedens (Rehm ex Arnold) Arnold | MYCO-LICH

Staurothele succedens (Rehm ex Arnold) Arnold

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Reference: 

Valadbeigi, T. & H.J.M. Sipman, 2010: New records of lichens and lichenicolous fungi from Iran and their biogeographical significance. Mycotaxon 113: 191–194.

The blackish thallus of this lichen is microscopically scaly and mixed with a thin smear of cyanobacteria. Though the tall discs (perithecia) are slightly immersed they form prominent structures with cylindrical algal cells and eight-spored asci. In Ireland, it grows on limestone near to where a stream emerges. It is tolerant of damp situations by watercourses, but generally avoids the most acid stream beds.

Key characteristics

  • Blackish, roughened thallus; grows in the amphibious zone of rivers and streams
  • Prominent perithecia containing eight-spored asci and cylindrical algae.