LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 293

Arthonia thelotrematis Coppins

Characters[*]:Character States[*]:
global occurrence: Eurasia – Europe
substrate: lichens, lichenized fungi
life habit: lichenicolous (in/on lichens)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed
[th marginal and upper surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.06 (high) 0.2
ascoma: subsessile, subimmersed, adnate, semi-immersed, emergent
[ascm, if apoth] disc, mazaedium: black(ish) | red(dish) brown (if pale: orange brown)
[ascm, if apoth] disc, mazaedium: epruinose
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: red(dish) brown (if pale: orange brown)
[ascm] paraphyses/-oids: present
[ascm] paraphyses/-oid apical cells width [µm]: (low) 1.5 (high) 2.3 (max) 3.5
[ascm] epihymenium, epithecium: red(dish) brown (pale: orange brown)
asci: fissitunicate – bitunicate
[asc] tholus: thickened
[asc] tholus amyloidity (iodine reaction): absent | present
[asc] tholus amyloidity pattern: with amyloid tube, ring (= Collema-, Micarea-, Porpidia-, Psora-types etc)
ascospores: (median) 8.0
[asp] shape: ovoid, ovate
[asp] length [µm]: (low) 11.0 (high) 14.0
[asp] width [µm]: (low) 4.5 (high) 5.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (min) 2.0(median) 3.0
[asp] pigmentation: hyaline, colourless | dark brown
secondary metabolites: absent
host organism:
primary photobiont: absent

[*] 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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