LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 7637

Arthonia madreana Egea & Torrente

Characters[*]:Character States[*]:
global occurrence: Americas – North America (incl Mexico)
substrate: rock, stones, pebbles – unspecified
life habit: lichenized (mutualistic with algal photobionts)
thallus: crustose (crustaceous) – endosubstratal, inconspicuous, immersed
thallus: compartimentized – areolate, squamulate
[th] upper surface: white(ish)
[th marginal and upper surface] specific structures: absent
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma [mm]: (low) 0.5 (high) 1.2
ascoma: immersed, innate
[ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded
[ascm, if apoth] disc, mazaedium: 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: present
[ascm] paraphyses/-oids: present
[ascm] epihymenium, epithecium: red(dish) brown (pale: orange brown)
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: ovoid, ovate
[asp] length [µm]: (low) 11.0 (high) 15.0
[asp] width [µm]: (low) 4.0 (high) 5.0 (max) 5.5
[asp] septa: present
[asp] septa: transversely septate
[asp] transversal septa: (low) 1.0 (high) 3.0
[asp] pigmentation: hyaline, colourless
[asp] perispore, epispore: thin, thinly halonate
conidiomata: absent | present
conidia: filiform, vermiform | [cur] – curved, unciform, falcate, sickle-shaped
[co] length [µm]: (low) 14.0 (high) 20.0
secondary metabolites: present
secondary metabolites: confluentic acid
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.


© 2001–2020 by Botanische Staatssammlung M√ľnchen
Impressum · Disclaimer · Webmaster