LIAS light – Item Descriptions
LIASlight ItemID: 13573
Pertusaria islandica Bratt, Lumbsch & I. Schmitt
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Americas – North America (incl Mexico) |
| substrate: | rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | crustose (crustaceous) – episubstratal – unspecified |
| thallus: | cracked, fissured, fractured, rimose | compartimentized – areolate, squamulate |
| [th] upper surface: | white(ish) | brown(ish) grey | white(ish) grey |
| [th upper surface]: | epruinose | pruinose |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) width [mm]: | (low) 0.5 (high) 1.2 |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | verrucose, warted |
| ascomata: | absent | present |
| ascoma: | apothecial, apothecioid – hymenial |
| ascoma [mm]: | (low) 0.5 (high) 1.2 |
| ascoma: | sessile, superficial |
| [ascm, if apoth] disc, mazaedium: | plane, flat, flattened, expanded |
| [ascm, if apoth] disc, mazaedium: | black(ish) | black(ish) brown |
| [ascm, if apoth] disc, mazaedium: | epruinose |
| [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] epihymenium, epithecium: | hyaline, colourless |
| asci: | lecanoralean |
| [asc] tholus: | thickened |
| [asc] tholus amyloidity (iodine reaction): | present |
| [asc] tholus amyloidity pattern: | with amyloid cap (= Icmadophila-, Lecidea-, Pertusaria-types etc) |
| ascospores: | (min) 4.0(median) 8.0 |
| [asp] shape: | ellipsoidal |
| [asp] length [µm]: | (min) 30.0 (low) 55.0 (high) 80.0 |
| [asp] width [µm]: | (low) 25.0 (high) 50.0 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless | medium brown, brownish | dark brown | blackish brown |
| [asp] perispore, epispore: | thick, distincly halonate |
| secondary metabolites: | absent | present |
| secondary metabolites: | 2'-O-methylmicrophyllinic acid | 2'-O-methylperlatolic acid | confluentic acid |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |