LiasLight

LIAS light – Item Descriptions


LIASlight ItemID: 9397

Fuscidea thomssonii Brodo & V. Wirth

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: crustose (crustaceous) – episubstratal – unspecified
thallus: cracked, fissured, fractured, rimose | compartimentized – areolate, squamulate
[th] upper surface: grey(ish) | grey(ish) brown
[th marginal and upper surface] specific structures: absent
[th] medulla amyloidity: present
ascomata: absent | present
ascoma: apothecial, apothecioid – hymenial
ascoma: immersed, innate | subsessile, subimmersed, adnate, semi-immersed, emergent
[ascm, if apoth] disc, mazaedium: plane, flat, flattened, expanded
[ascm, if apoth] disc, mazaedium: black(ish)
[ascm] paraphyses/-oids: present
[ascm] paraphyses/-oid cells width [µm]: (low) 1.5 (high) 2.0
[ascm] paraphyses/-oid apical cells width [µm]: (min) 3.0
[ascm] epihymenium, epithecium: brown(ish) (if pale: fawn, tan; if mid: cinnamon)
asci: lecanoralean
[asc] tholus: thickened
[asc] tholus amyloidity (iodine reaction): present
[asc] tholus amyloidity pattern: entirely amyloid (= Catillaria-, Teloschistes-types etc)
ascospores: (median) 8.0
[asp] shape: subglobose, subspherical | broadly ellipsoidal
[asp] length [µm]: (low) 7.0 (high) 9.0
[asp] width [µm]: (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: bacilliform, bacillar
[co] length [µm]: (low) 3.0 (high) 4.0
secondary metabolites: present
secondary metabolites: divaricatic acid
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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