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Miriquidica deusta (Stenham.) Hertel & Rambold
Family: Lecanoraceae
[Lecidea deustata (A. Massal.) Zahlbr.,  more]
Miriquidica deusta image

Global occurrence: Eurasia – Asia Extratropical | Oceania – Australasia | Eurasia – Europe | Americas – North America (incl Mexico) | Americas – South and Central America | Arctic.  Substrate: lichens, lichenized fungi | rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified.  Life habit: lichenized (mutualistic with algal photobionts) | lichenicolous (in/on lichens).  Thallus: crustose (crustaceous) – episubstratal – unspecified | subsquamulose (subsquamulous); compartimentized – areolate, squamulate; [th] upper surface: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | black(ish) brown; [th upper surface]: epruinose; [th marginal and upper surface] specific structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 0.3 (low) 0.5 (high) 0.8 (max) 1.0; [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane; [th] medulla amyloidity: absent.  Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (min) 0.4 (low) 0.5 (high) 0.9 (max) 1.5; ascoma: immersed, innate | subsessile, subimmersed, adnate, semi-immersed, emergent | sessile, superficial; [ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex | convex; [ascm, if apoth] disc, mazaedium: black(ish); [ascm, if apoth] disc, mazaedium: epruinose; [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish); [ascm, if apoth] margin excipular photobionts: absent; [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless; [ascm] paraphyses/-oids: present; [ascm] paraphyses/-oid cells width [µm]: (low) 1.5 (high) 2.0; [ascm] paraphyses/-oid apical cells width [µm]: (low) 3.0 (high) 4.0 (max) 5.5; [ascm] epihymenium, epithecium: brown(ish) green (olivaceous, olive green) | grey(ish) brown | green(ish) brown (olive 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 | oblong, oblong-obtuse; [asp] length [µm]: (low) 8.0 (high) 11.0 (max) 14.0; [asp] width [µm]: (min) 3.5 (low) 4.0 (high) 4.5 (max) 7.0; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent.  Conidiomata: absent | present.  Conidia: filiform, vermiform; [co] length [µm]: (min) 18.0 (low) 25.0 (high) 35.0.  Secondary metabolites: present, lobaric acid | miriquidic acid.  Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid.  Secondary photobionts (eg in cephalodia): absent.