LIAS light – Item Descriptions
LIASlight ItemID: 13494
Mycomicrothelia xanthonica Komposch, Aptroot & Hafellner
| Characters[*]: | Character States[*]: |
|---|---|
| global occurrence: | Americas – South and Central America |
| substrate: | bark, cork, plant surface – trunks, branches, twigs |
| life habit: | lichenized (mutualistic with algal photobionts) |
| thallus: | crustose (crustaceous) – endosubstratal, inconspicuous, immersed |
| thallus: | continuous, diffuse, effuse |
| [th] upper surface: | white(ish) | yellow(ish) white (ivory, off-white, cream-coloured) |
| [th marginal and upper surface] specific structures: | absent |
| ascomata: | absent | present |
| ascoma: | perithecial, perithecioid – hymenial |
| ascoma [mm]: | (low) 0.5 (high) 0.7 (max) 0.8 |
| ascoma: | subsessile, subimmersed, adnate, semi-immersed, emergent | sessile, superficial |
| [ascm] paraphyses/-oids: | present |
| asci: | fissitunicate – bitunicate |
| [asc] tholus: | thickened |
| [asc] tholus amyloidity (iodine reaction): | absent |
| ascospores: | (min) 4.0(median) 8.0 |
| [asp] shape: | oval |
| [asp] length [µm]: | (min) 25.5(median) 33.2 (max) 43.0 |
| [asp] width [µm]: | (min) 9.0 (low) 10.0 (high) 11.0 (max) 14.0 |
| [asp] septa: | present |
| [asp] septa: | transversely septate |
| [asp] transversal septa: | (median) 1.0 |
| [asp] pigmentation: | medium brown, brownish |
| [asp] perispore, epispore: | thick, distincly halonate | ornamented, rough, warted, striate, cracked |
| conidiomata: | absent | present |
| conidia: | bacilliform, bacillar |
| [co] length [µm]: | (min) 11.0(median) 13.8 (max) 17.0 |
| secondary metabolites: | present |
| secondary metabolites: | lichexanthone |
| primary photobiont: | present |
| secondary photobionts (eg in cephalodia): | absent |
| primary photobiont: | chlorophytaceous – trentepohliaceous, trentepohlioid |