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Lecanora geophila (Th. Fr.) Poelt
Family: Lecanoraceae
Lecanora geophila image
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified | squamulose (squamulous) | placodioid-crustose, placodioid-foliose | subfruticose (subfruticous), fruticulose, dactyliform thallus: compartimentized – areolate, squamulate [th] upper surface: yellow(ish) (if dull: buff) | yellow(ish) green | green(ish) yellow | yellow(ish) white (ivory, off-white, cream-coloured) [th upper surface]: epruinose [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 [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.5 (high) 1.0 [th] morphol substructures (eg areoles, squamules): discontiguous, dispersed (throughout the thallus) [th] morphol substructures (eg areoles, lobes, branches) upper surface: subsquamulose | squamulose [th lower surface] specific structures: absent | present [th lower surface] rhizines, rhizoid structures: absent ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (low) 0.5 (high) 1.0 ascoma: sessile, superficial [ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded [ascm, if apoth] disc, mazaedium: yellow(ish) (if dull: buff) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) yellow (orange, orange yellow) | yellow(ish) brown [ascm, if apoth] disc, mazaedium: epruinose [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: yellow(ish) (if dull: buff) | yellow(ish) green | green(ish) yellow | yellow(ish) white (ivory, off-white, cream-coloured) [ascm, if apoth] margin excipular photobionts: present | abundant [ascm] paraphyses/-oids: present [ascm] paraphyses/-oid cells width [µm]: (low) 1.0 (high) 1.5 [ascm] epihymenium, epithecium: yellow(ish) (if dull: buff) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) 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) 9.0 (high) 13.0 [asp] width [µm]: (low) 5.0 (high) 7.0 [asp] septa: absent – spore lumen unilocular, monolocular [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent secondary metabolites: present secondary metabolites: 16ß-acetoxyhopane-6α,22-diol | 6α,16β-diacetoxyhopane-22-ol | 6α-acetoxyhopane-16β,22-diol | hopane-6α,16ß,22-triol | pannaric acid | usnic acid | zeorin (hopane-6α,22-diol) | unknown/unidentified fatty acid(s) | methyl placodiolic acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: soil, clay, humus, turf, detritus, dead leaves | bryophytes – mosses, liverworts.