LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 7632

Arthonia glebosa Tuck.

Characters[*]:Character States[*]:
global occurrence: Eurasia – Asia Extratropical | Eurasia – Europe | Americas – North America (incl Mexico)
substrate: soil, clay, humus, turf, detritus, dead leaves
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed | squamulose (squamulous)
thallus: compartimentized – areolate, squamulate
[th] upper surface: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | green(ish) brown (olive brown)
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.2 (high) 0.6
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (median) 2.5
ascoma: subsessile, subimmersed, adnate, semi-immersed, emergent
[ascm, if apoth] margin excipular photobionts: present
[ascm] paraphyses/-oids: present
[ascm] epihymenium, epithecium: green(ish) brown (olive brown) | yellow(ish) 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: obovoid, obovate
[asp] length [µm]: (low) 10.0 (high) 14.0
[asp] width [µm]: (low) 4.0 (high) 6.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (median) 1.0
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: thick, distincly halonate
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.


© 2001–2020 by Botanische Staatssammlung M√ľnchen
Impressum · Disclaimer · Webmaster