LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 266

Arthonia myriocarpella Nyl.

Characters[*]:Character States[*]:
global occurrence: Eurasia – Europe
substrate: soil, clay, humus, turf, detritus, dead leaves | lichens, lichenized fungi
life habit: lichenized (mutualistic with algal photobionts) | lichenicolous (in/on lichens)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed
thallus: granular, granulose, granulate
[th] upper surface: white(ish)
[th marginal and upper surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.08 (high) 0.3
[ascm, if apoth] disc, mazaedium: convex
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: brown(ish) (if pale: fawn, tan; if mid: cinnamon)
[ascm] paraphyses/-oids: present
[ascm] paraphyses/-oid apical cells width [µm]: (low) 3.0 (high) 6.0
[ascm] epihymenium, epithecium: brown(ish) (if pale: fawn, tan; if mid: cinnamon)
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: oblong, oblong-obtuse | ovoid, ovate
[asp] length [µm]: (low) 10.0 (high) 13.0 (max) 14.0
[asp] width [µm]: (low) 3.0 (high) 4.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (low) 2.0 (high) 3.0
[asp] pigmentation: hyaline, colourless
conidiomata: absent | present
conidia: bacilliform, bacillar
[co] length [µm]: (low) 3.4 (high) 4.0
secondary metabolites: absent
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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