LIAS light – Item Descriptions
LIASlight ItemID: 1255
Melanelia commixta (Nyl.) A. Thell
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Eurasia – Europe | Americas – North America (incl Mexico) | Arctic |
| substrate: | bryophytes – mosses, liverworts | bark, cork, plant surface – trunks, branches, twigs | rock – siliceous, siliciferous, acidic |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | foliose (foliaceous), leaf-like |
| thallus: | continuous, diffuse, effuse |
| [th] upper surface: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | brown(ish) black | black(ish) brown |
| [th upper surface]: | epruinose |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) width [mm]: | (min) 0.25 (low) 1.0 (high) 4.0 |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | smooth, plane | pseudocyphellate, with pseudocyphellae |
| [th] lower surface: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | white(ish) | red(dish) brown (if pale: orange brown) | white(ish) brown (beige) |
| [th lower surface] specific structures: | present |
| [th lower surface] rhizines, rhizoid structures: | present |
| [th lower surface] rhizines, rhizinoid structures: | unbranched, simple | irregularly branched, irregular |
| ascomata: | absent | present |
| ascoma: | apothecial, apothecioid – hymenial |
| ascoma [mm]: | (median) 5.0 (max) 6.0 |
| [ascm] paraphyses/-oids: | present |
| 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] shape: | ellipsoidal |
| [asp] length [µm]: | (min) 6.0 (low) 7.0 (high) 9.0 (max) 10.0 |
| [asp] width [µm]: | (low) 4.0 (high) 5.0 (max) 6.0 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | not apparent |
| conidiomata: | absent | present |
| conidia: | sublageniform | citriform |
| [co] length [µm]: | (low) 3.5 (high) 6.0 (max) 8.0 |
| secondary metabolites: | absent | present |
| secondary metabolites: | 4-O-methylphysodic acid | α-collatolic acid | alectoronic acid | atranorin | chloroatranorin | physodic acid |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |