LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 3736

Micarea contexta Hedl.

Characters[*]:Character States[*]:
global occurrence: Eurasia – Europe
substrate: wood – dead, living
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.1 (high) 0.2 (max) 0.3
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm, if apoth] margin excipular photobionts: absent
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: green(ish) | red(dish) blue (violet)
[ascm] paraphyses/-oids: present
[ascm] paraphyses/-oid cells width [µm]: (min) 1.0 (low) 1.5 (high) 2.0
[ascm] paraphyses/-oid apical cells width [µm]: (low) 2.0 (high) 3.0
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] shape: ovoid, ovate | obovoid, obovate
[asp] length [µm]: (low) 7.0 (high) 13.0 (max) 14.0
[asp] width [µm]: (low) 3.0 (high) 4.6
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (median) 1.0
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: not apparent
conidiomata: absent | present
conidia: oblong, oblong-obtuse | bacilliform, bacillar
[co] length [µm]: (low) 3.5 (high) 4.5
host organism:
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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