LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 3755

Micarea nigella Coppins

Characters[*]:Character States[*]:
global occurrence: Eurasia – Europe
substrate: wood – dead, living
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed | crustose (crustaceous) – episubstratal – unspecified
[th] upper surface: green(ish) grey
[th marginal and upper surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.1 (high) 0.3
ascoma: sessile, superficial
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm, if apoth] margin excipular photobionts: absent
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: red(dish) brown (if pale: orange brown)
[ascm] paraphyses/-oids: present
[ascm] paraphyses/-oid cells width [µm]: (low) 0.5 (high) 1.0
[ascm] paraphyses/-oid apical cells width [µm]: (min) 2.0
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: ellipsoidal | ovoid, ovate
[asp] length [µm]: (low) 6.5 (high) 12.0
[asp] width [µm]: (low) 2.5 (high) 4.0
[asp] septa: absent – spore lumen unilocular, monolocular
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: not apparent
conidiomata: absent | present
conidia: ellipsoidal | cylindrical
[co] length [µm]: (low) 3.4 (high) 4.3
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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