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Australian Biological Resources Study

Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Lepraria atlantica Orange

Lichenologist 33: 462 (2001)

T: Owenbhan River, SE of Glenties, West Donegal (V.C. H35), Ireland, 1 Apr. 1998, A.Orange 11829; holo: NMW; iso: BG.

  Thallus crustose, leprose, powdery, pale bluish grey, whitish to greyish cream or greenish white, diffuse, forming thin to thick (to 1 mm) ±continuous extensive irregularly spreading patches to 20 cm wide, or in small irregularly ±rounded colonies 5–10 mm wide which eventually coalesce. Margin not delimited, lacking well-defined lobes. Soredia fine, dispersed or forming a thick continuous layer, ±globose, 30–50 μm wide, commonly aggregated in ±round consoredia 80–220 μm wide; projecting hyphae absent. Medulla absent. Hyphae 1.6–2.5 μm thick. Lower surface composed of decolourised granules mixed with free hyphae or a weft of white hyphae, without a tomentum.Photobiont cells ±spherical, 7–13 μm diam. Hypothallus absent.
CHEMISTRY: Thallus K+ yellow, C–, KC–, P+ yellow; UV+ blue-purple; containing porphyrilic acid (major), rangiformic acid or jackinic acid (major), norrangiformic acid or norjackinic acid (minor), atranorin (major).
  This scattered species occurs in W.A., N.S.W., A.C.T. and Tas.; grows on soil and over mosses on sheltered rock ledges. Also in Europe.  
  Elix (2009i)  

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Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References

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