Leprose lichen

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Acacia bark covered in green leprose lichen.

A leprose lichen is a lichen with a powdery or granular surface.[1] Leprose lichens lack an outer "skin," or cortex.[1] If a crustose lichen starts to disintegrate, it will appear powdery, but crustose lichens will leave a cortex surface, and leprose lichens do not.[1][2] Leprose lichens have no inner or outer cortex. They sometimes have a weak kind of medulla, but are composed mainly of the fungal hyphae and an algae.


  1. ^ a b c "Lichen thallus types, illustrated (Alan Silverside's photographs of lichens (FAQ))". www.lichens.lastdragon.org.
  2. ^ teacher, Gordon RamelGordon is an ecologist with two degrees from Exeter University He's also a; Poet, A.; of 1, The Owner; Oh -, 152 books; Website, He Wrote This (December 29, 2019). "Lichen: The Lovable & Unique Symbiosis Of Nature".