Myriolecis salina
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Myriolecis salina (H. Magn.) Śliwa, Zhao Xin & Lumbsch
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Family: Lecanoraceae
[Lecanora salina H. Magn.]  |
Global occurrence: Eurasia – Europe | Americas – North America (incl Mexico) | Arctic. Substrate: rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified. Life habit: lichenized (mutualistic with algal photobionts).Thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed | crustose (crustaceous) – episubstratal – unspecified; continuous, diffuse, effuse | granular, granulose, granulate;[th] upper surface: grey(ish) | yellow(ish) grey | white(ish) grey; [th upper surface]: epruinose; [th marginal and upper surface] specific structures: absent; [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (median) 0.25;[th] morphol substructures (eg areoles, squamules): discontiguous, dispersed (throughout the thallus);[th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | granulose, granular. Ascomata: absent | present; ascoma: apothecial, apothecioid – hymenial;ascoma [mm]: (low) 0.2 (high) 0.6 (max) 0.8; ascoma: sessile, superficial;[ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex;[ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | yellow(ish) grey | red(dish) brown (if pale: orange brown); [ascm, if apoth] disc, mazaedium: epruinose | pruinose; [ascm, if apoth] disc, mazaedium pruina: scarce, sparse, fine;[ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: grey(ish) | yellow(ish) grey | white(ish) grey;[ascm, if apoth] margin excipular photobionts: present | abundant;[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless; [ascm] paraphyses/-oids: present; [ascm] paraphyses/-oid cells width [µm]: (low) 1.5 (high) 2.5;[ascm] paraphyses/-oid apical cells width [µm]: (low) 2.5 (high) 3.5;[ascm] epihymenium, epithecium: hyaline, colourless | brown(ish) yellow (ochraceous, ochre) | yellow(ish) brown. 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) 8.0 (high) 11.0 (max) 15.0; [asp] width [µm]: (low) 4.5 (high) 6.5 (max) 7.0; [asp] septa: absent – spore lumen unilocular, monolocular; [asp] pigmentation: hyaline, colourless; [asp] perispore, epispore: not apparent. Secondary metabolites: present, 2,5-dichlorolichexanthone. Primary photobiont: present, chlorophytaceous – trebouxiaceous, chlorococcoid. Secondary photobionts (eg in cephalodia): absent. |
