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Parmelia squarrosa Hale  
Familia: Parmeliaceae
Parmelia squarrosa image
Stephen Sharnoff
  • LIAS
  • IUCN Red-List Assessment
  • Recursos
Botanische Staatssammlung Munchen

Global occurrence: Eurasia – Asia Extratropical | Eurasia – Europe | Americas – North America (incl Mexico) | Arctic.  Substrate: wood – dead, living | bark, cork, plant surface – trunks, branches, twigs | rock, stones, pebbles – unspecified.  Life habit: lichenized (mutualistic with algal photobionts).  Thallus: foliose (foliaceous), leaf-like; continuous, diffuse, effuse; [th] upper surface: blue(ish) grey | green(ish) grey | white(ish) grey; [th upper surface]: epruinose | pruinose; [th upper surface] pruina: scarce, sparse, fine; [th marginal and upper surface] specific structures: present; [th margin] cilia, cilioid structures: absent; [th upper surface] isidia, isidioid structures: present; [th upper surface] soredia, soralia, soralioid structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 1.0 (high) 3.0 (max) 5.0; [th] morphol substructures (eg areoles, squamules): distantly discontiguous; [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | rugose, plicate, folded, pustulate, faveolate, wrinkled | maculate | cracked, fissured, fractured, rimulose, subrimose | pseudocyphellate, with pseudocyphellae; [th] morphol substructures (eg lobes, branches): subdichotomous | irregular; [th] lower surface: black(ish); [th lower surface] specific structures: present; [th lower surface] rhizines, rhizoid structures: present; [th lower surface] rhizines, rhizinoid structures: squarrosely branched, squarrose.  Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (low) 1.0 (high) 3.0; ascoma: sessile, superficial | subpedicellate, substipitate, subpedunculate, substalked; [ascm, if apoth] disc, mazaedium: concave | plane, flat, flattened, expanded; [ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon); [ascm, if apoth] disc, mazaedium: epruinose; [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: blue(ish) grey | green(ish) grey | white(ish) grey; [ascm, if apoth] margin excipular photobionts: present | abundant; [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless; [ascm] paraphyses/-oids: present; [ascm] epihymenium, epithecium: yellow(ish) brown | red(dish) brown (pale: orange brown).  Asci: lecanoralean; [asc] tholus: thickened; [asc] tholus amyloidity (iodine reaction): present; [asc] tholus amyloidity pattern: amyloid with widening axial body towards the apex (= Lecanora-, Parmelia-, Rinodina-types etc).  Ascospores: (median) 8.0; [asp] shape: broadly ellipsoidal | ellipsoidal; [asp] length [µm]: (low) 13.0 (high) 15.0; [asp] width [µm]: (low) 8.0 (high) 9.0; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent.  Secondary metabolites: present, atranorin | chloroatranorin | consalazinic acid | salazinic acid.  Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid.  Secondary photobionts (eg in cephalodia): absent.

Assessed as Least Concern (LC), ver 3.1

Find out more about the IUCN Red List Categories and Criteria here.

Parmelia squarrosa
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Parmelia squarrosa image
Stephen Sharnoff
Parmelia squarrosa image
Stephen Sharnoff
Parmelia squarrosa image
Stephen Sharnoff
Parmelia squarrosa image
Stephen Sharnoff
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Christopher Raithel
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Christopher Raithel
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Christopher Raithel
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Christopher Raithel
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Christopher Raithel
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Christopher Raithel
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Christopher Raithel
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Christopher Raithel
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