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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
Parmeliella mariana (Fries) P.M.Jørg. & D.J.Galloway
  Fl. Australia 54: 316 (1992)
Parmelia mariana Fries, Syst. Orb. Veg. 1: 284 (1825); Pannaria mariana (Fries) Müll. Arg., Flora 60: 321 (1887). T: Marianne Islands, [Micronesia], C.Gaudichaud; holo: UPS.
  Thallus rosette-forming, radiating, orbicular, 2–6 cm wide, on a thick, felted, cottony, brown-black prothallus projecting 2–6 mm beyond lobe apices, closely appressed to substratum. Lobes narrow, 0.5–1.2 mm wide, discrete at margins, contiguous at margins or from margins to centre or often ±confluent without visible division between lobes, to minutely lobulate-imbricate centrally, flat or subconvex; margins entire, slightly thickened, occasionally somewhat ascendant, sometimes white-frosted. Upper surface blotched (x10 lens), smooth, occasionally striate, without isidia, leaden grey when wet, pale grey-fawn to pinkish brown when dry. Apothecia common, aggregated towards centre, 0.4–1.2 mm wide, rounded; disc flat, red-brown; thalline exciple thick, persistent, smooth to delicately crenulate, concolorous with thallus. Ascospores 12–16 × 8–10 µm. CHEMISTRY: rarely with ursolic acid.
  Occurs on bark. A tropical-subtropical species of lowland rainforest. In Australia, apparently restricted to Qld and Norfolk Is.  
  Jørgensen & Galloway (1992a)  

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

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