LIAS light – Item Descriptions
LIASlight ItemID: 8697
Myriotrema desquamans (Müll. Arg.) Hale
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Oceania – Australasia | Eurasia – Asia Tropical |
| substrate: | bark, cork, plant surface – trunks, branches, twigs |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | crustose (crustaceous) – endosubstratal, inconspicuous, immersed | crustose (crustaceous) – episubstratal – unspecified |
| thallus: | continuous, diffuse, effuse |
| [th] upper surface: | green(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | green(ish) grey |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | smooth, plane | verrucose, warted |
| ascomata: | absent | present |
| ascoma: | apothecial, apothecioid – hymenial | perithecial, perithecioid – hymenial |
| ascoma [mm]: | (min) 0.4 |
| ascoma: | immersed, innate | subsessile, subimmersed, adnate, semi-immersed, emergent |
| [ascm] paraphyses/-oids: | present |
| [ascm] epihymenium, epithecium: | hyaline, colourless |
| asci: | unitunicate |
| [asc] tholus: | not thickened | thickened |
| [asc] tholus amyloidity (iodine reaction): | absent |
| ascospores: | (median) 8.0 |
| [asp] shape: | subglobose, subspherical | oblong, oblong-obtuse |
| [asp] length [µm]: | (low) 20.0 (high) 35.0 |
| [asp] width [µm]: | (low) 8.0 (high) 18.0 |
| [asp] septa: | present |
| [asp] septa: | muriformly septate – muriform, submuriform |
| [asp] transversal septa: | (low) 5.0 (high) 11.0 |
| [asp] pigmentation: | medium brown, brownish |
| [asp] perispore, epispore: | not apparent | amyloid |
| secondary metabolites: | absent | present |
| secondary metabolites: | constictic acid | cryptostictic acid | hypoconstictic acid | hypostictic acid | stictic acid |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trentepohliaceous, trentepohlioid |