LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 15258

Chaenotheca nitidula Tibell

Characters[*]:Character States[*]:
global occurrence: Americas – North America (incl Mexico)
substrate: wood – dead, living
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed
thallus: continuous, diffuse, effuse
[th] upper surface: grey(ish) green
[th marginal and upper surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – mazaedial
ascoma [mm]: (low) 0.16 (high) 0.2
ascoma: pedicellate, stipitate, pedunculate, stalked
[ascm, if apoth] disc, mazaedium: epruinose
[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
asci: prototunicate
[asc] tholus: not thickened
[asc] tholus amyloidity (iodine reaction): absent
[asp] shape: globose, spherical | subglobose, subspherical
[asp] length [µm]: (low) 4.0 (high) 4.9
[asp] width [µm]: (low) 4.0 (high) 4.9
[asp] septa: absent – spore lumen unilocular, monolocular
[asp] pigmentation: medium brown, brownish
[asp] perispore, epispore: not apparent | ornamented, rough, warted, striate, cracked
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.


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