LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 362

Arthrosporum populorum A. Massal.

Characters[*]:Character States[*]:
global occurrence: Eurasia – Europe | Americas – North America (incl Mexico) | Arctic
substrate: bark, cork, plant surface – trunks, branches, twigs
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed | crustose (crustaceous) – episubstratal – unspecified
[th] upper surface: white(ish)
[th marginal and upper surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (median) 0.7
ascoma: sessile, superficial
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: black(ish)
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | hyaline, colourless | red(dish) brown (if pale: orange brown)
[ascm] paraphyses/-oids: present
[ascm] epihymenium, epithecium: red(dish) blue (violet) | blue(ish) green (turquoise) | brown(ish) green (olivaceous, olive green) | green(ish) brown (olive brown)
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: (low) 8.0 (high) 16.0
[asp] shape: [cur] – curved, unciform, falcate, sickle-shaped
[asp] length [µm]: (low) 10.0 (high) 18.0
[asp] width [µm]: (low) 4.0 (high) 5.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (median) 3.0 (max) 5.0
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: not apparent
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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