 
	    LIAS light – Item Descriptions
LIASlight ItemID: 2225
Gyalecta truncigena (Ach.) Hepp
| Characters[*]: | Character States[*]: | 
|---|---|
| global occurrence: | Eurasia – Europe | Americas – North America (incl Mexico) | Arctic | 
| substrate: | bark, cork, plant surface – trunks, branches, twigs | 
| life habit: | lichenized (mutualistic with algal photobionts) | 
| thallus: | crustose (crustaceous) – episubstratal – unspecified | 
| [th marginal and upper surface] specific structures: | absent | 
| ascomata: | absent | present | 
| ascoma: | apothecial, apothecioid – hymenial | 
| ascoma [mm]: | (low) 0.3 (high) 0.5 (max) 0.7 | 
| [ascm, if apoth] disc, mazaedium: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) yellow (orange, orange yellow) | yellow(ish) brown | 
| [ascm] paraphyses/-oids: | present | 
| asci: | unitunicate | 
| [asc] tholus: | thickened | 
| [asc] tholus amyloidity (iodine reaction): | absent | present | 
| ascospores: | (median) 8.0 | 
| [asp] length [µm]: | (low) 17.0 (high) 28.0 | 
| [asp] width [µm]: | (low) 6.0 (high) 9.0 | 
| [asp] septa: | present | 
| [asp] septa: | transversely septate | muriformly septate – muriform, submuriform | 
| [asp] transversal septa: | (median) 5.0 | 
| [asp] pigmentation: | hyaline, colourless | 
| [asp] perispore, epispore: | not apparent | 
| primary photobiont: | present | 
| secondary photobionts (eg in cephalodia): | absent | 
| primary photobiont: | chlorophytaceous – trentepohliaceous, trentepohlioid |