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North American Lichen Herbaria
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Cetraria islandica (L.) Ach.  
Go To Encyclopedia of Life...
Family: Parmeliaceae
Cetraria islandica image
Stephen Sharnoff  
  • LIAS
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Botanische Staatssammlung München
Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like | fruticose (fruticous), shrub-like, beard-like [th] upper surface: brown(ish) (if pale: fawn, tan; if mid: cinnamon) [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) upper surface: pseudocyphellate, with pseudocyphellae ascomata: absent secondary metabolites: present secondary metabolites: fumarprotocetraric acid | protocetraric acid | protolichesterinic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: soil, clay, humus, turf, detritus, dead leaves.
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Cetraria islandica
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Lucy Taylor  
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Stephen Sharnoff  
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Stephen Sharnoff  
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Stephen Sharnoff  
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Stephen Sharnoff  
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Stephen Sharnoff  
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Stephen Sharnoff  
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This project made possible by National Science Foundation Awards: #1115116