LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 7634

Arthonia infectans Egea & Torrente

Characters[*]:Character States[*]:
global occurrence: Americas – North America (incl Mexico)
substrate: rock, stones, pebbles – unspecified
life habit: lichenized (mutualistic with algal photobionts) | lichenicolous (in/on lichens)
thallus: crustose (crustaceous) – episubstratal – unspecified
thallus: granular, granulose, granulate
[th] upper surface: yellow(ish) white (ivory, off-white, cream-coloured)
[th marginal and upper surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.4 (high) 1.0
ascoma: immersed, innate
[ascm, if apoth] disc, mazaedium: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) brown (if pale: orange brown)
[ascm, if apoth] disc, mazaedium: pruinose
[ascm, if apoth] disc, mazaedium pruina: scarce, sparse, fine | dense
[ascm, if apoth] margin excipular photobionts: absent | present
[ascm] paraphyses/-oids: present
[ascm] epihymenium, epithecium: brown(ish) (if pale: fawn, tan; if mid: cinnamon)
asci: fissitunicate – bitunicate
[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: clavate
[asp] length [µm]: (low) 45.0 (high) 65.0
[asp] width [µm]: (low) 20.0 (high) 25.0
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (low) 3.0 (high) 4.0 (max) 5.0
[asp] pigmentation: hyaline, colourless
secondary metabolites: absent
host organism:
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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