LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 14300

Physcia tricolor (Zahlbr.) Yoshim.

Characters[*]:Character States[*]:
global occurrence: Africa (incl Madagascar)
substrate: bark, cork, plant surface – trunks, branches, twigs
life habit: lichenized (mutualistic with algal photobionts)
thallus: foliose (foliaceous), leaf-like
thallus: continuous, diffuse, effuse
[th] upper surface: blue(ish) white
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 2.0 (high) 5.0
[th] morphol substructures (eg areoles, lobes, branches) upper surface: verruculose, minutely warted
[th] lower surface: yellow(ish) brown
[th lower surface] specific structures: present
[th lower surface] rhizines, rhizoid structures: present
[th lower surface] rhizines, rhizinoid structures: fasciculate
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (min) 4.0
ascoma: sessile, superficial
[ascm, if apoth] disc, mazaedium: concave | subconcave, slightly concave
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm, if apoth] disc, mazaedium: epruinose
[ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: brown(ish) yellow (ochraceous, ochre)
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: brown(ish) yellow (ochraceous, ochre)
[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 | oval | oblong, oblong-obtuse
[asp] length [µm]: (low) 18.0 (high) 28.0
[asp] width [µm]: (low) 11.0 (high) 13.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (median) 1.0
[asp] pigmentation: grey, greyish
[asp] perispore, epispore: not apparent
primary photobiont: present
secondary photobionts (eg in cephalodia): absent
primary photobiont: cyanobacterial

[*] 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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