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Cetrelia alaskana (C. Culb. & Culb.) Culb. & C. Culb.
Family: Parmeliaceae
[Cetraria alaskana C.F. Culb. & W.L. Culb.]
Cetrelia alaskana image
Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like [th] upper surface: grey(ish) | green(ish) grey [th upper surface]: epruinose [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 7.0 (high) 20.0 [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | pseudocyphellate, with pseudocyphellae [th] lower surface: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) [th lower surface] specific structures: present [th lower surface] rhizines, rhizoid structures: present [th lower surface] rhizines, rhizinoid structures: unbranched, simple ascomata: absent conidiomata: absent | present conidia: bifusiform [co] length [µm]: (low) 5.0 (high) 6.0 secondary metabolites: present secondary metabolites: atranorin | imbricaric acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: soil, clay, humus, turf, detritus, dead leaves.