LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 1899

Dimerella lutea (Dicks.) Trevis.

Characters[*]:Character States[*]:
global occurrence: Africa (incl Madagascar) | Eurasia – Asia Extratropical | Oceania – Australasia | Eurasia – Europe | Americas – North America (incl Mexico) | Americas – South and Central America
substrate: bryophytes – mosses, liverworts | bark, cork, plant surface – trunks, branches, twigs | leaves, fronds, needles – living | rock, stones, pebbles – unspecified
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – episubstratal – unspecified
thallus: continuous, diffuse, effuse
[th] upper surface: grey(ish) | green(ish) | white(ish) grey | grey(ish) green
[th upper surface]: epruinose
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (min) 0.4 (low) 0.6 (high) 0.8 (max) 2.0
ascoma: sessile, superficial
[ascm, if apoth] disc, mazaedium: concave | plane, flat, flattened, expanded | subconvex, slightly convex
[ascm, if apoth] disc, mazaedium: red(dish) yellow (orange, orange yellow)
[ascm, if apoth] disc, mazaedium: epruinose
[ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: white(ish) | red(dish) yellow (orange, orange yellow) | yellow(ish) white (ivory, off-white, cream-coloured)
[ascm, if apoth] margin excipular photobionts: absent
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: yellow(ish) (if dull: buff) | hyaline, colourless
[ascm] paraphyses/-oids: present
asci: unitunicate
[asc] tholus: not thickened
[asc] tholus amyloidity (iodine reaction): absent
ascospores: (median) 8.0
[asp] shape: broadly ellipsoidal | ellipsoidal
[asp] length [µm]: (min) 7.0 (low) 8.0 (high) 11.0
[asp] width [µm]: (min) 2.0 (low) 2.5 (high) 3.5
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (median) 1.0
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: not apparent
conidiomata: absent | present
conidia: broadly ellipsoidal | bacilliform, bacillar
[co] length [µm]: (low) 3.0 (high) 5.0
secondary metabolites: absent
primary photobiont: present
secondary photobionts (eg in cephalodia): absent
primary photobiont: chlorophytaceous – trentepohliaceous, trentepohlioid

[*] 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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