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Mycoblastus affinis (Schaerer) Schauer
Family: Tephromelataceae
[Lecidea affinis Schaer.,  more]
Mycoblastus affinis image
André Aptroot  
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified thallus: continuous, diffuse, effuse | granular, granulose, granulate [th] upper surface: grey(ish) | green(ish) grey [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 | present [th] morphol substructures (eg areoles, lobes, branches) upper surface: verruculose, minutely warted ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (median) 1.5 ascoma: sessile, superficial [ascm, if apoth] disc, mazaedium: convex | distinctly convex | strongly convex, hemispherical, (sub-)globose [ascm, if apoth] disc, mazaedium: black(ish) [ascm, if apoth] margin excipular photobionts: absent [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | hyaline, colourless [ascm] paraphyses/-oids: present [ascm] epihymenium, epithecium: green(ish) | blue(ish) black | black(ish) blue 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) | entirely amyloid (= Catillaria-, Teloschistes-types etc) ascospores: (min) 1.0(median) 2.0 (max) 3.0 [asp] shape: broadly ellipsoidal | ellipsoidal | elongate-fusiform, ellipsoidal-fusiform [asp] length [µm]: (min) 40.0 (low) 47.0 (high) 70.0 (max) 100.0 [asp] width [µm]: (min) 25.0 (low) 30.0 (high) 42.0 [asp] septa: absent – spore lumen unilocular, monolocular [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent secondary metabolites: present secondary metabolites: atranorin | norcaperatic acid | planaic acid | roccellic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: bark, cork, plant surface – trunks, branches, twigs.