• Collema auriforme (With.) Coppins & J.R.Laundon
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Collema auriforme
© Mike Simms
Collema auriforme
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(Map updated: 11 August 2009)

When moist the brownish-green lobes (jelly-like and fleshy) and scattered blobs (which are the isidia of this lichen) are a conspicuous feature especially when growing on mosses, mortared walls and shaded calcareous rock. Although it is common, in the dry state the species can appear altogether different. The lobes shrivel and become darker while the isidia shrink to resemble dark brown granules. Discs are rare.

Key characteristics

  • A 'jelly lichen', rubbery when wet with numerous brown droplet-like blobs (isidia)
  • Brittle and almost black when dry with the blobs reduced to granules; moist calcareous habitats.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Collema auriforme (With.) Coppins & J.R.Laundon. [In] LichenIreland. Accessed on 2019-01-21.