LIAS light – Item Descriptions
LIASlight ItemID: 8679
Psoroma fruticulosum P. James & Henssen
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Africa (incl Madagascar) | Oceania – Australasia | Americas – South and Central America | Antarctic – Southern Subpolar Islands, Subantarctic Islands |
| substrate: | soil, clay, humus, turf, detritus, dead leaves | bryophytes – mosses, liverworts |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | squamulose (squamulous) |
| [th] upper surface: | brown(ish) green (olivaceous, olive green) | brown(ish) yellow (ochraceous, ochre) | red(dish) yellow (orange, orange yellow) |
| [th marginal and upper surface] specific structures: | present |
| [th margin] cilia, cilioid structures: | absent |
| [th upper surface] isidia, isidioid structures: | absent |
| [th upper surface] soredia, soralia, soralioid structures: | absent |
| [th] morphol substructures (eg areoles, lobes, branches) width [mm]: | (low) 0.1 (high) 1.0 |
| [th] morphol substructures (eg areoles, lobes, branches) upper surface: | rugose, plicate, folded, pustulate, faveolate, wrinkled | hairy, pilose, setose, hirsute, tomentose, pubescent, felt-like |
| [th] lower surface: | white(ish) | yellow(ish) brown |
| [th lower surface] specific structures: | absent |
| ascomata: | absent | present |
| ascoma: | apothecial, apothecioid – hymenial |
| ascoma [mm]: | (low) 3.0 (high) 11.0 |
| ascoma: | sessile, superficial |
| [ascm, if apoth] disc, mazaedium: | strongly concave, excavate, urceolate | concave | plane, flat, flattened, expanded | subconvex, slightly convex | convex |
| [ascm, if apoth] disc, mazaedium: | brown(ish) black | yellow(ish) brown | red(dish) brown (if pale: orange brown) |
| [ascm, if apoth] disc, mazaedium: | epruinose |
| [ascm] paraphyses/-oids: | present |
| asci: | lecanoralean |
| [asc] tholus: | thickened |
| [asc] tholus amyloidity (iodine reaction): | present |
| [asc] tholus amyloidity pattern: | with amyloid tube, ring (= Collema-, Micarea-, Porpidia-, Psora-types etc) |
| ascospores: | (median) 8.0 |
| [asp] length [µm]: | (low) 18.0 (high) 23.0 |
| [asp] width [µm]: | (low) 6.0 (high) 10.0 |
| [asp] septa: | absent – spore lumen unilocular, monolocular |
| [asp] pigmentation: | hyaline, colourless |
| [asp] perispore, epispore: | ornamented, rough, warted, striate, cracked |
| secondary metabolites: | absent |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | present |
| primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |