LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 14255

Pyxine exoalbida Jungbluth & Marcelli

Characters[*]:Character States[*]:
global occurrence: Americas – South and Central America
substrate: bark, cork, plant surface – trunks, branches, twigs
life habit: lichenized (mutualistic with algal photobionts)
thallus: foliose (foliaceous), leaf-like
[th] upper surface: grey(ish) | brown(ish) grey
[th upper surface]: epruinose | pruinose
[th upper surface] pruina: scarce, sparse, fine | dense
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.5 (high) 1.0 (max) 1.4
[th] morphol substructures (eg areoles, lobes, branches) upper surface: maculate
[th] lower surface: black(ish) | grey(ish)
[th lower surface] specific structures: present
[th lower surface] rhizines, rhizoid structures: present
[th lower surface] rhizines, rhizinoid structures: irregularly branched, irregular
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (min) 1.5
ascoma: sessile, superficial
[ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm, if apoth] disc, mazaedium: epruinose
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: red(dish) yellow (orange, orange yellow)
[ascm] paraphyses/-oids: present
asci: lecanoralean
[asc] tholus: thickened
[asc] tholus amyloidity (iodine reaction): present
[asc] tholus amyloidity pattern: amyloid with acuate axial body towards the apex (= Bacidia-, Buellia-, Ramalina-types etc)
ascospores: (median) 8.0
[asp] shape: ellipsoidal
[asp] length [µm]: (min) 13.0 (low) 14.0 (high) 16.0 (max) 20.0
[asp] width [µm]: (low) 5.0 (high) 7.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (median) 1.0
[asp] pigmentation: medium brown, brownish
conidiomata: absent | present
conidia: sublageniform
[co] length [µm]: (low) 4.0 (high) 5.5
secondary metabolites: present
secondary metabolites: atranorin | norstictic acid | unknown/unidentified (tri-)terpenoid(s), (tri-)terpene(s) | unknown/unidentified pigment(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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