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Peltigera kristinssonii Vitik.
Family: Peltigeraceae
Peltigera kristinssonii image
Stephen Sharnoff  

Global occurrence: Eurasia – Europe | Americas – North America (incl Mexico) | Arctic.  Substrate: soil, clay, humus, turf, detritus, dead leaves | bryophytes – mosses, liverworts | rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified.  Life habit: lichenized (mutualistic with algal photobionts).  Thallus: foliose (foliaceous), leaf-like; [th] upper surface: grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | blue(ish) grey | grey(ish) brown; [th upper surface]: epruinose; [th marginal and upper surface] specific structures: absent | present; [th margin] cilia, cilioid structures: absent; [th upper surface] isidia, isidioid structures: absent; [th upper surface] soredia, soralia, soralioid structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 10.0 (high) 20.0; [th] morphol substructures (eg areoles, squamules): distantly discontiguous; [th] morphol substructures (eg areoles, lobes, branches) upper surface: hairy, pilose, setose, hirsute, tomentose, pubescent, felt-like; [th] morphol substructures (eg lobes, branches): irregular; [th] lower surface: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | yellow(ish) brown; [th lower surface] specific structures: present; [th lower surface] rhizines, rhizoid structures: present; [th lower surface] rhizines, rhizinoid structures: squarrosely branched, squarrose | fasciculate.  Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (low) 5.0 (high) 9.0; ascoma: sessile, superficial; [ascm, if apoth] disc, mazaedium: concave; [ascm, if apoth] disc, mazaedium: red(dish) brown (if pale: orange brown); [ascm, if apoth] disc, mazaedium: epruinose; [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: brown(ish) (if pale: fawn, tan; if mid: cinnamon); [ascm] paraphyses/-oids: present; [ascm] epihymenium, epithecium: red(dish) brown (pale: orange brown).  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: acicular (needle-shaped); [asp] length [µm]: (min) 40.0 (low) 44.0 (high) 59.0 (max) 73.0; [asp] width [µm]: (min) 2.6 (low) 3.0 (high) 4.0 (max) 5.2; [asp] septa: present, transversely septate; [asp] transversal septa: (median) 3.0; [asp] pigmentation: hyaline, colourless | pale brown; [asp] perispore, epispore: not apparent.  Secondary metabolites: absent.  Secondary photobionts (eg in cephalodia): absent.  Primary photobiont: present, cyanobacterial.

Peltigera kristinssonii image
Stephen Sharnoff  
Peltigera kristinssonii image
Stephen Sharnoff  
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image
Peltigera kristinssonii image