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Peltigera canina (L.) Willd.
Family: Peltigeraceae
[Dermatodea canina (L.) A. St.-Hil.,  more]
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Stephen Sharnoff  
Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like thallus: continuous, diffuse, effuse [th] upper surface: grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | brown(ish) grey [th upper surface]: epruinose [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 15.0 (high) 30.0 [th] morphol substructures (eg areoles, squamules): contiguous, coherent (throughout the thallus) [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | hairy, pilose, setose, hirsute, tomentose, pubescent, felt-like [th] morphol substructures (eg lobes, branches): irregular [th] lower surface: white(ish) [th lower surface] specific structures: present [th lower surface] rhizines, rhizoid structures: present [th lower surface] rhizines, rhizinoid structures: unbranched, simple | irregularly branched, irregular | fasciculate ascomata: absent | present ascoma: apothecial, apothecioid – hymenial [ascm, if apoth] disc, mazaedium: concave | plane, flat, flattened, expanded [ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) brown (if pale: orange brown) [ascm, if apoth] disc, mazaedium: epruinose [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | brown(ish) grey [ascm] paraphyses/-oids: present asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: with amyloid tube, ring (= Collema-, Micarea-, Porpidia-, Psora-types etc) ascospores: (median) 8.0 [asp] shape: elongate-fusiform, ellipsoidal-fusiform | acicular (needle-shaped) [asp] septa: present [asp] septa: transversely septate [asp] transversal septa: (low) 3.0 (high) 5.0 [asp] pigmentation: hyaline, colourless | pale brown [asp] perispore, epispore: not apparent secondary metabolites: absent primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: cyanobacterial.

substrate: soil, clay, humus, turf, detritus, dead leaves | bryophytes – mosses, liverworts | bark, cork, plant surface – trunks, branches, twigs | rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified.
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Troy McMullin  
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Lucy Taylor  
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Troy McMullin  
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Jason Hollinger  
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Stephen Sharnoff  
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Stephen Sharnoff  
Peltigera canina image
Stephen Sharnoff  
Peltigera canina image
Stephen Sharnoff  
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Andrew Khitsun  
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