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Peccania coralloides (A. Massal.) A. Massal.
Family: Lichinaceae
Peccania coralloides image

Global occurrence: Eurasia – Europe | Arctic.  Substrate: soil, clay, humus, turf, detritus, dead leaves | rock – calcareous, calciferous, basic.  Life habit: lichenized (mutualistic with algal photobionts).  Thallus: subfruticose (subfruticous), fruticulose, dactyliform; continuous, diffuse, effuse; [th] upper surface: black(ish) | blue(ish) grey; [th marginal and upper surface] specific structures: 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) 0.15 (high) 1.0 (max) 3.0; [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane.  Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (low) 1.5 (high) 2.0; ascoma: immersed, innate | subsessile, subimmersed, adnate, semi-immersed, emergent | sessile, superficial; [ascm, if apoth] disc, mazaedium: concave | plane, flat, flattened, expanded; [ascm, if apoth] disc, mazaedium: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon); [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish) | blue(ish) grey; [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless; [ascm] paraphyses/-oids: present; [ascm] epihymenium, epithecium: brown(ish) (if pale: fawn, tan; if mid: cinnamon).  Asci: prototunicate; [asc] tholus: not thickened; [asc] tholus amyloidity (iodine reaction): absent | present.  Ascospores: [asp] shape: globose, spherical; [asp] length [µm]: (median) 8.0; [asp] width [µm]: (median) 8.0; [asp] septa: absent – spore lumen unilocular, monolocular.  Primary photobiont: present, cyanobacterial.  Secondary photobionts (eg in cephalodia): absent.