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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
Lecanora pseudodecorata Lumbsch & Elix
  Australas. Lichenol. 47: 14 (2000). T: Conway State Forest, 16 km E of Proserpine, Qld, 28 June 1986, J.A.Elix 20800 & H.Streimann; holo: CANB.  
  Thallus crustose to peltate, 1–3 mm thick, roundish, plane to convex, continuous to rimose, yellowish green to yellow, epruinose, sometimes glossy. Soredia absent. Prothallus not visible or blackish grey. Apothecia immersed in the thallus, 0.5–2.0 mm diam.; disc dark grey-brown to dark red-brown, epruinose. Cortex and amphithecium absent. Parathecium hyaline, 10–15 µm thick, with numerous small crystals insoluble in KOH. Epihymenium red-brown, c. 10 µm thick; pigmentation not altered by KOH, the crystals soluble in KOH. Hymenium and hypothecium hyaline. Paraphyses sparingly branched and thickened apically. Ascospores ellipsoidal to broadly ellipsoidal, 9.5–13.0 × 6.5–8.0 µm. CHEMISTRY: Thallus K–, C+ orange, Pd–; containing arthothelin (major) and thiophanic acid (minor).
  This species is known only from shaded, quartzitic rocks at type locality in north-eastern Qld.  
  Lumbsch & Elix (2004)  

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

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