LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 4710

Physcia phaea (Tuck.) J. W. Thomson

Characters[*]:Character States[*]:
global occurrence: Eurasia – Asia Extratropical | Oceania – Australasia | Eurasia – Europe | Americas – North America (incl Mexico) | Arctic
substrate: rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified
life habit: lichenized (mutualistic with algal photobionts)
thallus: foliose (foliaceous), leaf-like
[th] upper surface: grey(ish) | brown(ish) grey
[th upper surface]: epruinose
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 1.0 (high) 1.5 (max) 1.5
[th] morphol substructures (eg areoles, lobes, branches) upper surface: maculate
[th] lower surface: grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | white(ish)
[th lower surface] specific structures: present
[th lower surface] rhizines, rhizoid structures: present
[th lower surface] rhizines, rhizinoid structures: unbranched, simple
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.3 (high) 1.2 (max) 2.0
ascoma: subpedicellate, substipitate, subpedunculate, substalked
[ascm, if apoth] disc, mazaedium: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon)
[ascm, if apoth] disc, mazaedium: epruinose | pruinose
[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] shape: ellipsoidal
[asp] length [µm]: (min) 15.0 (low) 16.5 (high) 20.0 (max) 21.5
[asp] width [µm]: (min) 6.5 (low) 7.0 (high) 9.5 (max) 11.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (median) 1.0
[asp] pigmentation: medium brown, brownish
conidiomata: absent | present
conidia: cylindrical
[co] length [µm]: (low) 4.0 (high) 6.0
secondary metabolites: present
secondary metabolites: atranorin | zeorin (hopane-6α,22-diol) | unknown/unidentified (tri-)terpenoid(s), (tri-)terpene(s)
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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