LIAS light – Item Descriptions
LIASlight ItemID: 13562
Arthothelium desertorum Aptroot & V. Wirth
Characters[*]: | Character States[*]: |
---|---|
global occurrence: | Africa (incl Madagascar) |
substrate: | 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: | yellow(ish) grey | brown(ish) grey |
[th marginal and upper surface] specific structures: | absent |
ascomata: | absent | present |
ascoma: | apothecial, apothecioid – hymenial |
ascoma [mm]: | (low) 0.2 (high) 1.0 (max) 1.4 |
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) brown |
[ascm, if apoth] disc, mazaedium: | pruinose |
[ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) | red(dish) brown (if pale: orange brown) |
[ascm] paraphyses/-oids: | present |
[ascm] epihymenium, epithecium: | brown(ish) (if pale: fawn, tan; if mid: cinnamon) |
asci: | fissitunicate – bitunicate |
[asc] tholus: | not thickened | thickened |
[asc] tholus amyloidity (iodine reaction): | absent |
ascospores: | (low) 4.0 (high) 8.0 |
[asp] shape: | ellipsoidal |
[asp] length [µm]: | (low) 17.0 (high) 21.0 |
[asp] width [µm]: | (low) 9.0 (high) 11.0 |
[asp] septa: | present |
[asp] septa: | muriformly septate – muriform, submuriform |
[asp] transversal septa: | (median) 5.0 (max) 6.0 |
[asp] pigmentation: | hyaline, colourless | pale brown | medium brown, brownish | dark brown |
[asp] perispore, epispore: | not apparent |
conidiomata: | absent | present |
conidia: | bacilliform, bacillar |
[co] length [µm]: | (low) 6.0 (high) 8.0 |
secondary metabolites: | present |
secondary metabolites: | divaricatic acid |
primary photobiont: | present |
secondary photobionts (eg in cephalodia): | absent |
primary photobiont: | chlorophytaceous – trebouxiaceous, chlorococcoid |