LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 6473

Usnea cavernosa Tuck.

Characters[*]:Character States[*]:
global occurrence: Eurasia – Asia Extratropical | Eurasia – Europe | Americas – North America (incl Mexico) | Arctic
substrate: bark, cork, plant surface – trunks, branches, twigs
life habit: lichenized (mutualistic with algal photobionts)
thallus: fruticose (fruticous), shrub-like, beard-like
thallus: continuous, diffuse, effuse
[th] upper surface: grey(ish) | grey(ish) green | yellow(ish) green
[th upper surface]: epruinose
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 1.5
[th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | rugose, plicate, folded, pustulate, faveolate, wrinkled | cracked, fissured, fractured, rimulose, subrimose
[th] morphol substructures (eg lobes, branches): isotomic-dichotomous
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma: sessile, superficial | subpedicellate, substipitate, subpedunculate, substalked
[ascm, if apoth] disc, mazaedium: concave | plane, flat, flattened, expanded
[ascm, if apoth] disc, mazaedium: yellow(ish) (if dull: buff) | brown(ish) (if pale: fawn, tan; if mid: cinnamon)
[ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: grey(ish) | grey(ish) green | yellow(ish) green
[ascm, if apoth] margin excipular photobionts: present
[ascm] paraphyses/-oids: present
asci: lecanoralean
[asc] tholus: thickened
[asc] tholus amyloidity (iodine reaction): present
[asc] tholus amyloidity pattern: amyloid with widening axial body towards the apex (= Lecanora-, Parmelia-, Rinodina-types etc)
ascospores: (median) 8.0
[asp] septa: absent – spore lumen unilocular, monolocular
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: not apparent
secondary metabolites: absent | present
secondary metabolites: salazinic acid | usnic acid
primary photobiont: present
secondary photobionts (eg in cephalodia): absent
primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid

[*] Not all (synonymous, equivalent or similar) terms being provided in parallel for a character or character state (e.g. 'endosubstratal, inconspicuous, immersed') need to be valid for the taxon under concern.


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