• Collema subflaccidum Degel.
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Collema subflaccidum
© Mike Simms
Collema subflaccidum
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(Map updated: 11 August 2009)

C. subflaccidum is somewhat similar in appearance to C. flaccidum (described elsewhere) but there the similarity ends as the latter is predominantly a lichen of aquatic habitats. C. subflaccidum is an epiphyte of mature basic-barked trees often confined to rather sheltered situations. The near black thallus is covered with tiny pebble-like isidia giving the upper side a scurfy appearance. Sheltered, well stocked country gardens with mature ash trees would be promising search areas. Western Ireland.

Key characteristics

  • Near-black ‘jelly-lichen’ with flat lobes covered in pebble-shaped isidia
  • On mature, basic-barked trees in damp, relatively sheltered habitats.

Original text submitted by Vince J. Giavarini

 Simms, M. J., (2016). Collema subflaccidum Degel.. [In] LichenIreland. Accessed on 2019-01-23.