LIAS light – Item Descriptions
LIASlight ItemID: 6772
Verrucaria praetermissa (Trevis.) Anzi
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Eurasia – Asia Extratropical | Oceania – Australasia | Eurasia – Europe | Americas – North America (incl Mexico) | Oceania – Pacific Islands (Melanesia, Micronesia, Polynesia) | Arctic |
| substrate: | rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | crustose (crustaceous) – episubstratal – unspecified |
| thallus: | continuous, diffuse, effuse | cracked, fissured, fractured, rimose | compartimentized – areolate, squamulate |
| [th] upper surface: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | green(ish) grey | white(ish) grey | grey(ish) green | grey(ish) brown | blue(ish) brown (violet brown) | white(ish) brown (beige) | grey(ish) white | brown(ish) white |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) width [mm]: | (low) 0.3 (high) 0.8 (max) 1.4 |
| ascomata: | absent | present |
| ascoma: | perithecial, perithecioid – hymenial |
| ascoma [mm]: | (min) 0.18 (low) 0.25 (high) 0.3 (max) 0.4 |
| ascoma: | immersed, innate | subsessile, subimmersed, adnate, semi-immersed, emergent |
| [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: | black(ish) |
| [ascm, if apoth] margin excipular photobionts: | absent |
| [ascm] paraphyses/-oids: | absent |
| asci: | fissitunicate – verrucarialean |
| [asc] tholus: | thickened |
| [asc] tholus amyloidity (iodine reaction): | absent |
| ascospores: | (median) 8.0 |
| [asp] shape: | ellipsoidal | oblong, oblong-obtuse | narrowly ellipsoidal |
| [asp] length [µm]: | (min) 15.0 (low) 18.0(median) 21.0 (high) 25.0 (max) 28.0 |
| [asp] width [µm]: | (min) 6.5 (low) 7.0(median) 8.7 (high) 10.0 (max) 11.0 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | not apparent | thin, thinly halonate |
| secondary metabolites: | absent |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |