 
	    LIAS light – Item Descriptions
LIASlight ItemID: 2678
Lecanora circumborealis Brodo & Vitik.
| Characters[*]: | Character States[*]: | 
|---|---|
| global occurrence: | Eurasia – Europe | Americas – North America (incl Mexico) | Americas – South and Central America | Arctic | 
| substrate: | wood – dead, living | bark, cork, plant surface – trunks, branches, twigs | 
| life habit: | lichenized (mutualistic with algal photobionts) | 
| thallus: | crustose (crustaceous) – episubstratal – unspecified | 
| ascomata: | absent | present | 
| ascoma: | apothecial, apothecioid – hymenial | 
| ascoma [mm]: | (low) 0.4 (high) 1.0 (max) 1.5 | 
| [ascm, if apoth] disc, mazaedium: | black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | 
| [ascm] epihymenium, epithecium: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | green(ish) brown (olive brown) | red(dish) brown (pale: orange 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) 11.0 (low) 13.0 (high) 17.5 | 
| [asp] width [µm]: | (min) 7.0 (low) 8.0 (high) 11.0 (max) 12.0 | 
| [asp] septa: | absent – spore lumen unilocular, monolocular | 
| [asp] perispore, epispore: | not apparent | 
| secondary metabolites: | present | 
| secondary metabolites: | atranorin | roccellic acid | 
| primary photobiont: | present | 
| secondary photobionts (eg in cephalodia): | absent | 
| primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |