LIAS light – Item Descriptions
LIASlight ItemID: 4429
Peltula impressa (Vain.) Swinscow & Krog
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Africa (incl Madagascar) | Oceania – Australasia | Americas – North America (incl Mexico) | Americas – South and Central America | Eurasia – Asia Tropical |
| substrate: | rock – siliceous, siliciferous, acidic |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | squamulose (squamulous) | placodioid-crustose, placodioid-foliose |
| [th] upper surface: | green(ish) brown (olive brown) |
| [th upper surface]: | epruinose |
| [th marginal and upper surface] specific structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) width [mm]: | (low) 0.2 (high) 0.5 |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | smooth, plane |
| ascomata: | absent | present |
| ascoma: | apothecial, apothecioid – hymenial |
| ascoma [mm]: | (low) 0.1 (high) 0.3 |
| ascoma: | immersed, innate |
| [ascm, if apoth] disc, mazaedium: | black(ish) | red(dish) brown (if pale: orange brown) |
| [ascm] paraphyses/-oids: | present |
| asci: | lecanoralean |
| [asc] tholus: | thickened |
| [asc] tholus amyloidity (iodine reaction): | present |
| [asc] tholus amyloidity pattern: | entirely amyloid (= Catillaria-, Teloschistes-types etc) |
| ascospores: | (median) 64.0 |
| [asp] shape: | globose, spherical | subglobose, subspherical | ellipsoidal |
| [asp] length [µm]: | (low) 3.5 (high) 5.0 (max) 7.0 |
| [asp] width [µm]: | (low) 2.4 (high) 3.5 (max) 4.0 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | not apparent |
| conidiomata: | absent | present |
| secondary metabolites: | absent |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | cyanobacterial |