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Melanohalea olivacea (L.) O. Blanco et al. (redirected from: Parmelia olivacea)
Family: Parmeliaceae
[Imbricaria olivacea (L.) DC.,  more]
Melanohalea olivacea image
Stephen Sharnoff  
Life habit: lichenized (mutualistic with algal photobionts) thallus: foliose (foliaceous), leaf-like thallus: continuous, diffuse, effuse [th] upper surface: brown(ish) (if pale: fawn, tan; if mid: cinnamon) | green(ish) brown (olive brown) [th upper surface]: epruinose | pruinose [th marginal and upper surface] specific structures: absent [th] morphol substructures (eg areoles, lobes, branches) width [mm]: (min) 1.0 (low) 2.0 (high) 6.0 (max) 8.0 [th] morphol substructures (eg areoles, squamules): distantly discontiguous [th] morphol substructures (eg areoles, lobes, branches) upper surface: smooth, plane | verrucose, warted | rugose, plicate, folded, pustulate, faveolate, wrinkled | pseudocyphellate, with pseudocyphellae [th] lower surface: black(ish) | brown(ish) (if pale: fawn, tan; if mid: cinnamon) [th lower surface] specific structures: present [th lower surface] rhizines, rhizoid structures: present [th lower surface] rhizines, rhizinoid structures: unbranched, simple ascomata: absent | present ascoma: apothecial, apothecioid – hymenial ascoma [mm]: (min) 9.0 [ascm, if apoth] subhymenial layers, hypothecium; [if perith] basal excipulum: hyaline, colourless [ascm] paraphyses/-oids: present asci: lecanoralean [asc] tholus: thickened [asc] tholus amyloidity (iodine reaction): present [asc] tholus amyloidity pattern: amyloid with widening axial body towards the apex (= Lecanora-, Parmelia-, Rinodina-types etc) ascospores: (median) 8.0 [asp] shape: ellipsoidal | ovoid, ovate [asp] length [µm]: (low) 12.0 (high) 15.0 (max) 16.0 [asp] width [µm]: (low) 7.0 (high) 9.0 [asp] septa: absent – spore lumen unilocular, monolocular [asp] pigmentation: hyaline, colourless [asp] perispore, epispore: not apparent conidiomata: absent | present conidia: bifusiform | acerose (needle-shaped) [co] length [µm]: (low) 5.5 (high) 7.0 (max) 8.0 secondary metabolites: present secondary metabolites: fumarprotocetraric acid | protocetraric acid primary photobiont: present secondary photobionts (eg in cephalodia): absent primary photobiont: chlorophytaceous – trebouxiaceous, chlorococcoid.

substrate: bark, cork, plant surface – trunks, branches, twigs.
Melanohalea olivacea image
Lucy Taylor  
Melanohalea olivacea image
Stephen Sharnoff  
Melanohalea olivacea image
Stephen Sharnoff  
Melanohalea olivacea image
Melanohalea olivacea image
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