Life habit: lichenized (mutualistic with algal photobionts) thallus: squamulose (squamulous) [th] upper surface: black(ish) [th upper surface]: epruinose [th marginal and upper surface] specific structures: absent ascomata: absent | present ascoma: perithecial, perithecioid – hymenial ascoma: immersed, innate [ascm] paraphyses/-oids: absent asci: unitunicate [asc] tholus: not thickened [asc] tholus amyloidity (iodine reaction): absent ascospores: (min) 8.0(median) 16.0 (max) 24.0 [asp] length [µm]: (low) 7.0 (high) 10.0 [asp] width [µm]: (low) 4.0 (high) 5.0 [asp] septa: absent – spore lumen unilocular, monolocular [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent conidiomata: absent | present conidia: filiform, vermiform secondary metabolites: absent primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: cyanobacterial.