LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 11852

Opegrapha arabica (Müll. Arg.) Vain.

Characters[*]:Character States[*]:
global occurrence: Africa (incl Madagascar) | Oceania – Australasia | Oceania – Pacific Islands (Melanesia, Micronesia, Polynesia)
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
thallus: continuous, diffuse, effuse | cracked, fissured, fractured, rimose
[th] upper surface: grey(ish) | white(ish)
[th upper surface]: epruinose | pruinose
[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]: (low) 0.2 (high) 0.3
ascoma: immersed, innate | subsessile, subimmersed, adnate, semi-immersed, emergent | sessile, superficial
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm, if apoth] disc, mazaedium: pruinose
[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
[ascm] paraphyses/-oids: present
[ascm] paraphyses/-oid cells width [µm]: (median) 1.0
[ascm] paraphyses/-oid apical cells width [µm]: (median) 2.0
[ascm] epihymenium, epithecium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | hyaline, colourless
asci: fissitunicate – bitunicate
[asc] tholus: thickened
[asc] tholus amyloidity (iodine reaction): present
[asc] tholus amyloidity pattern: with amyloid tube, ring (= Collema-, Micarea-, Porpidia-, Psora-types etc)
ascospores: (low) 4.0 (high) 8.0
[asp] shape: oblong, oblong-obtuse
[asp] length [µm]: (min) 18.5 (low) 21.1 (high) 27.5 (max) 37.0
[asp] width [µm]: (min) 5.5 (low) 6.5 (high) 8.8 (max) 12.0
[asp] septa: present
[asp] septa: muriformly septate – muriform, submuriform
[asp] transversal septa: (low) 7.0 (high) 9.0
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: thick, distincly halonate
conidiomata: absent | present
conidia: [cur] – curved, unciform, falcate, sickle-shaped
[co] length [µm]: (low) 13.5 (high) 19.0
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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