LIAS light – Item Descriptions
LIASlight ItemID: 2902
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Oceania – Australasia | Eurasia – Europe |
| substrate: | rock – calcareous, calciferous, basic |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | placodioid-crustose, placodioid-foliose |
| [th] upper surface: | yellow(ish) (if dull: buff) | white(ish) | yellow(ish) green | yellow(ish) white (ivory, off-white, cream-coloured) |
| [th upper surface]: | pruinose |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) width [mm]: | (low) 0.5 (high) 1.0 (max) 1.5 |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | granulose, granular |
| ascomata: | absent | present |
| ascoma: | apothecial, apothecioid – hymenial |
| ascoma [mm]: | (low) 0.3 (high) 1.0 (max) 1.5 |
| ascoma: | sessile, superficial |
| [ascm, if apoth] disc, mazaedium: | plane, flat, flattened, expanded | subconcave, slightly concave |
| [ascm, if apoth] disc, mazaedium: | black(ish) brown | red(dish) brown (if pale: orange brown) | brown(ish) red (carneous) |
| [ascm, if apoth] disc, mazaedium: | pruinose |
| [ascm] paraphyses/-oids: | present |
| [ascm] epihymenium, epithecium: | 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] length [µm]: | (min) 8.0 (low) 10.0 (high) 13.0 (max) 15.0 |
| [asp] width [µm]: | (min) 4.0 (low) 5.0 (high) 7.0 (max) 7.5 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | not apparent |
| secondary metabolites: | present |
| secondary metabolites: | 2,7-dichloronorlichexanthone | arthothelin |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |