LIAS light – Item Descriptions
LIASlight ItemID: 6778
Verrucaria rheithrophila Zschacke
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Oceania – Australasia | Eurasia – Europe | Americas – North America (incl Mexico) |
| substrate: | rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | crustose (crustaceous) – episubstratal – unspecified |
| thallus: | continuous, diffuse, effuse | cracked, fissured, fractured, rimose |
| [th] upper surface: | green(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | green(ish) grey | black(ish) green | grey(ish) green | brown(ish) green (olivaceous, olive green) |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, squamules): | contiguous, coherent (throughout the thallus) |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | smooth, plane | pseudocyphellate, with pseudocyphellae |
| ascomata: | absent | present |
| ascoma: | perithecial, perithecioid – hymenial |
| ascoma [mm]: | (median) 0.2 (max) 0.22 |
| ascoma: | immersed, innate |
| [ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: | black(ish) |
| [ascm, if apoth] margin excipular photobionts: | absent |
| [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: | hyaline, colourless |
| [ascm] paraphyses/-oids: | absent |
| asci: | fissitunicate – verrucarialean |
| [asc] tholus: | thickened |
| [asc] tholus amyloidity (iodine reaction): | absent |
| ascospores: | (median) 8.0 |
| [asp] shape: | ellipsoidal |
| [asp] length [µm]: | (min) 8.5 (low) 12.0(median) 12.7 (high) 14.0 (max) 16.0 |
| [asp] width [µm]: | (min) 5.0 (low) 6.5(median) 7.4 (high) 8.0 (max) 10.0 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | not apparent |
| secondary metabolites: | absent |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |