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Myriolecis straminea (Ach.) Śliwa, Zhao Xin & Lumbsch (redirected from: Lecanora straminea)
Family: Lecanoraceae
[Lecanora straminea Ach.,  more]
Myriolecis straminea image
Life habit: lichenized (mutualistic with algal photobionts) thallus: crustose (crustaceous) – episubstratal – unspecified | placodioid-crustose, placodioid-foliose thallus: compartimentized – areolate, squamulate [th] upper surface: yellow(ish) (if dull: buff) | grey(ish) yellow | green(ish) yellow [th upper surface]: epruinose | pruinose [th upper surface] pruina: scarce, sparse, fine [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 0.5 (low) 1.0 (high) 1.5 [th] morphol substructures (eg areoles, squamules): contiguous, coherent (throughout the thallus) | discontiguous, dispersed (towards thallus periphery) [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | maculate [th] lower surface: brown(ish) black | yellow(ish) brown | brown(ish) red (carneous) [th lower surface] specific structures: absent ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (low) 1.5 (high) 2.5 (max) 4.0 ascoma: sessile, superficial | subpedicellate, substipitate, subpedunculate, substalked [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) | red(dish) | yellow(ish) red (orange red) [ascm, if apoth] disc, mazaedium: epruinose | pruinose [ascm, if apoth] disc, mazaedium pruina: scarce, sparse, fine | dense [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: yellow(ish) (if dull: buff) | grey(ish) yellow | green(ish) yellow [ascm, if apoth] margin excipular photobionts: present | abundant [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: yellow(ish) (if dull: buff) | yellow(ish) red (orange red) [ascm] paraphyses/-oids: present [ascm] paraphyses/-oid cells width [µm]: (low) 1.5 (high) 2.0 (max) 2.5 [ascm] paraphyses/-oid apical cells width [µm]: (low) 2.5 (high) 4.0 (max) 6.0 [ascm] epihymenium, epithecium: 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]: (min) 8.0 (low) 10.0 (high) 12.0 (max) 14.0 [asp] width [µm]: (min) 4.5 (low) 5.0 (high) 6.5 (max) 8.0 [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) 15.0 (low) 20.0 (high) 25.0 (max) 30.0 secondary metabolites: present secondary metabolites: arthothelin | thiophanic acid | granulosin primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified.