• Collema bachmanianum (Fink) Degel.
Collema bachmanianum
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This ‘jelly lichen’ of disturbed limestone soils appears to have been recorded in Ireland from only Clare Island and County Wexford. It is a distinctive species and can be distinguished from C. tenax var. tenax (described elsewhere) by the rim of the discs which are coarsely wrinkled like the edge of a cog-wheel, sometimes also with warts or lobules. Spores are larger 26-36ųm long, (17-26ųm long in C. tenax) ellipsoid and submuriform. Elsewhere, it is a species of dusty, limestone quarry floors.

Key characteristics

  • Like C. tenax but rim of disc, wrinkled and much warted; spores larger
  • Usually on disturbed limestone soils: look for it during the wetter months.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Collema bachmanianum (Fink) Degel.. [In] LichenIreland. Accessed on 2018-08-18.