LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 2905

Lecanora pseudomellea B. D. Ryan

Characters[*]:Character States[*]:
global occurrence: Americas – North America (incl Mexico)
substrate: rock – siliceous, siliciferous, acidic | rock, stones, pebbles – unspecified
life habit: lichenized (mutualistic with algal photobionts)
thallus: placodioid-crustose, placodioid-foliose
thallus: compartimentized – areolate, squamulate
[th] upper surface: yellow(ish) (if dull: buff) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | grey(ish) black | blue(ish) black | grey(ish) yellow | red(dish) yellow (orange, orange yellow) | green(ish) brown (olive brown) | yellow(ish) brown | red(dish) brown (if pale: orange brown)
[th upper surface]: epruinose | pruinose
[th upper surface] pruina: scarce, sparse, fine
[th marginal and upper surface] specific structures: absent
[th] morphol substructures (eg areoles, lobes, branches) width [mm]: (low) 0.7 (high) 1.5
[th] morphol substructures (eg areoles, squamules): contiguous, coherent (throughout the thallus) | discontiguous, dispersed (towards thallus periphery) | distantly discontiguous
[th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane
[th] morphol substructures (eg lobes, branches): subdichotomous
[th] lower surface: blue(ish) black | green(ish) black
[th lower surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.4 (high) 1.0
ascoma: sessile, superficial
[ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded | subconvex, slightly convex | convex
[ascm, if apoth] disc, mazaedium: yellow(ish) (if dull: buff) | red(dish) yellow (orange, orange yellow)
[ascm, if apoth] disc, mazaedium: epruinose
[ascm, if apoth] margin surface; [if perith] periostiolar area, ostiole, involucrellum: yellow(ish) (if dull: buff) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | grey(ish) black | blue(ish) black | grey(ish) yellow | red(dish) yellow (orange, orange yellow) | green(ish) brown (olive brown) | yellow(ish) brown | red(dish) brown (if pale: orange brown)
[ascm, if apoth] margin excipular photobionts: present | abundant
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless
[ascm] paraphyses/-oids: present
[ascm] paraphyses/-oid cells width [µm]: (low) 1.0 (high) 2.0
[ascm] paraphyses/-oid apical cells width [µm]: (low) 2.0 (high) 2.5
[ascm] epihymenium, epithecium: red(dish) brown (pale: orange brown)
asci: lecanoralean
[asc] tholus: thickened
[asc] tholus amyloidity (iodine reaction): present
[asc] tholus amyloidity pattern: amyloid with widening axial body towards the apex (= Lecanora-, Parmelia-, Rinodina-types etc)
ascospores: (median) 8.0
[asp] shape: ellipsoidal
[asp] length [µm]: (low) 10.0 (high) 12.0 (max) 14.0
[asp] width [µm]: (min) 4.0 (low) 5.0 (high) 6.0
[asp] septa: absent – spore lumen unilocular, monolocular
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: not apparent
conidiomata: absent | present
conidia: filiform, vermiform | [cur] – curved, unciform, falcate, sickle-shaped
[co] length [µm]: (min) 10.0 (low) 20.0 (high) 25.0 (max) 30.0
secondary metabolites: present
secondary metabolites: pannarin | protolichesterinic acid | psoromic acid | unknown/unidentified pigment(s)
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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