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Mycobilimbia pilularis (Körber) Hafellner & Türk
Family: Lecideaceae
[Biatora sphaeroides (Dicks.) Körb.,  more]
Mycobilimbia pilularis image

Global occurrence: Eurasia – Europe | Americas – North America (incl Mexico).  Substrate: soil, clay, humus, turf, detritus, dead leaves | bryophytes – mosses, liverworts | bark, cork, plant surface – trunks, branches, twigs.  Life habit: lichenized (mutualistic with algal photobionts).  Thallus: leprose, leprarioid, powdery, byssoid | crustose (crustaceous) – episubstratal – unspecified; thallus: granular, granulose, granulate; [th] upper surface: green(ish) | grey(ish) green | grey(ish) yellow; [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: present; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.025 (high) 0.07; [th] morphol substructures (eg areoles, lobes, branches) upper surface: granulose, granular.  Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial; ascoma [mm]: (low) 0.4 (high) 0.8 (max) 1.1; ascoma: sessile, superficial; [ascm, if apoth] disc, mazaedium: subconvex, slightly convex | convex | distinctly convex | strongly convex, hemispherical, (sub-)globose; [ascm, if apoth] disc, mazaedium: yellow(ish) (if dull: buff) | red(dish) yellow (orange, orange yellow) | red(dish) brown (if pale: orange brown) | white(ish) brown (beige) | yellow(ish) red (orange red) | brown(ish) red (carneous); [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: red(dish) brown (if pale: orange brown); [ascm, if apoth] margin excipular photobionts: absent | present; [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: yellow(ish) (if dull: buff) | 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) 5.0; [ascm] epihymenium, epithecium: yellow(ish) (if dull: buff) | hyaline, colourless.  Asci: lecanoralean; [asc] tholus: thickened; [asc] tholus amyloidity (iodine reaction): present; [asc] tholus amyloidity pattern: amyloid with acuate axial body towards the apex (= Bacidia-, Buellia-, Ramalina-types etc).  Ascospores: (median) 8.0; [asp] shape: ellipsoidal | elongate-fusiform, ellipsoidal-fusiform; [asp] length [µm]: (min) 9.5 (low) 11.0 (high) 17.0; [asp] width [µm]: (low) 3.5 (high) 5.0; [asp] septa: absent – spore lumen unilocular, monolocular | present; [asp] septa: transversely septate; [asp] transversal septa: (median) 1.0 (max) 3.0; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent | ornamented, rough, warted, striate, cracked.  Secondary metabolites: absent.  Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid.  Secondary photobionts (eg in cephalodia): absent.