LIAS light – Item Descriptions
LIASlight ItemID: 14251
Porina austroatlantica P. M. McCarthy & Fryday
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Antarctic – Southern Subpolar Islands, Subantarctic Islands |
| substrate: | rock – siliceous, siliciferous, acidic |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | crustose (crustaceous) – episubstratal – unspecified |
| thallus: | cracked, fissured, fractured, rimose | compartimentized – areolate, squamulate |
| [th] upper surface: | green(ish) | yellow(ish) white (ivory, off-white, cream-coloured) |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | smooth, plane | verruculose, minutely warted | rugulose, finely wrinkled |
| ascomata: | absent | present |
| ascoma: | perithecial, perithecioid – hymenial |
| ascoma [mm]: | (min) 0.25(median) 0.33 (max) 0.46 |
| ascoma: | subsessile, subimmersed, adnate, semi-immersed, emergent |
| [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: | black(ish) | brown(ish) black |
| [ascm, if apoth] margin excipular photobionts: | absent |
| [ascm] paraphyses/-oids: | present |
| [ascm] paraphyses/-oid cells width [µm]: | (low) 0.8 (high) 1.2 |
| asci: | unitunicate |
| [asc] tholus: | not thickened |
| [asc] tholus amyloidity (iodine reaction): | absent |
| ascospores: | (median) 8.0 |
| [asp] shape: | oblong, oblong-obtuse | fusiform |
| [asp] length [µm]: | (min) 19.0(median) 22.0 (max) 27.0 |
| [asp] width [µm]: | (min) 4.0(median) 4.8 (max) 6.0 |
| [asp] septa: | present |
| [asp] septa: | transversely septate |
| [asp] transversal septa: | (median) 3.0 |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | not apparent | thin, thinly halonate |
| conidiomata: | absent | present |
| conidia: | ellipsoidal | fusiform | bacilliform, bacillar |
| [co] length [µm]: | (low) 2.0(median) 3.0 (high) 3.5 |
| secondary metabolites: | absent |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trentepohliaceous, trentepohlioid |