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Lecanora xylophila Hue (redirected from: Lecanora riparia)
Family: Lecanoraceae
[Lecanora laevis Poelt,  more]
Lecanora xylophila image
Stephen Sharnoff  

Global occurrence: Africa (incl Madagascar) | Eurasia – Asia Extratropical | Eurasia – Europe | Eurasia – Asia Tropical.  Substrate: bark, cork, plant surface – trunks, branches, twigs.  Life habit: lichenized (mutualistic with algal photobionts).  Thallus: crustose (crustaceous) – episubstratal – unspecified; continuous, diffuse, effuse | compartimentized – areolate, squamulate; [th] upper surface: grey(ish) | white(ish); [th marginal and upper surface] specific structures: absent.  Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (low) 0.2 (high) 0.6 (max) 0.7; ascoma: sessile, superficial; [ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex; [ascm, if apoth] disc, mazaedium: red(dish) brown (if pale: orange brown); [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: grey(ish) | white(ish); [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless; [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: amyloid with widening axial body towards the apex (= Lecanora-, Parmelia-, Rinodina-types etc).  Ascospores: (median) 8.0; [asp] shape: ellipsoidal; [asp] length [µm]: (low) 13.0 (high) 15.0; [asp] width [µm]: (min) 4.0 (low) 5.0 (high) 8.0 (max) 9.0; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent.  Secondary metabolites: present, atranorin.  Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid.  Secondary photobionts (eg in cephalodia): absent.

Lecanora xylophila image
Troy McMullin  
Lecanora xylophila image
Stephen Sharnoff  
Lecanora xylophila image
Stephen Sharnoff  
Lecanora xylophila image
Stephen Sharnoff  
Lecanora xylophila image
Stephen Sharnoff  
Lecanora xylophila image
Stephen Sharnoff  
Lecanora xylophila image
Stephen Sharnoff  
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image
Lecanora xylophila image