A squamulose lichen is a lichen that is composed of small, often overlapping "scales" called squamules.[1] If they are raised from the substrate and appear leafy, the lichen may appear to be a foliose lichen, but the underside does not have a "skin" (cortex), as foliose lichens do. [2] Squamulose lichens are composed of flattish units that are usually tightly clustered. They are like an intermediate between crustose and foliose lichens.

Placidium arboreum is a squamulose lichen with squamules that become green when wet.

Examples of squamulose lichens include Vahliella leucophaea, Cladonia subcervicornis and Lichenomphalia hudsoniana.[3]

References edit

  1. ^ Dobson, F.S. (2011). Lichens, an illustrated guide to the British and Irish species. Slough, England: Richmond Publishing Co. Ltd. ISBN 9780855463151.
  2. ^ "Morphology of Lichens". www.ucmp.berkeley.edu. Retrieved 20 December 2022.
  3. ^ "FAQs". Images of British Lichens. Retrieved 3 April 2020.