LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 2105

Vahliella leucophaea (Vahl) P. M. Jørg

Characters[*]:Character States[*]:
global occurrence: Africa (incl Madagascar) | Eurasia – Asia Extratropical | Eurasia – Europe | Americas – North America (incl Mexico) | Americas – South and Central America | Eurasia – Asia Tropical
substrate: rock – siliceous, siliciferous, acidic | rock – calcareous, calciferous, basic | rock, stones, pebbles – unspecified
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – episubstratal – unspecified | squamulose (squamulous)
thallus: compartimentized – areolate, squamulate
[th] upper surface: black(ish) | grey(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | grey(ish) brown
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 2.0
[th] morphol substructures (eg areoles, squamules): contiguous, coherent (throughout the thallus)
[th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane
[th] morphol substructures (eg lobes, branches): irregular
[th] lower surface: white(ish)
[th lower surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (min) 1.5
ascoma: sessile, superficial
[ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex | convex
[ascm, if apoth] disc, mazaedium: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) brown (if pale: orange brown) | brown(ish) red (carneous)
[ascm, if apoth] margin excipular photobionts: absent | present
[ascm] paraphyses/-oids: present
asci: lecanoralean
[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: ellipsoidal
[asp] length [µm]: (low) 13.0 (high) 15.0 (max) 18.0
[asp] width [µm]: (low) 5.0 (high) 6.0 (max) 7.0
[asp] septa: absent – spore lumen unilocular, monolocular
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: not apparent
secondary metabolites: absent
primary photobiont: present
secondary photobionts (eg in cephalodia): absent
primary photobiont: cyanobacterial

[*] 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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