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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
Pseudocyphellaria coronata (Müll.Arg.) Malme
  Bih. Kongl. Svenska Vetensk.-Akad. Handl. 25(3/6): 29 (1899); Sticta coronata Müll.Arg., Flora 62: 163 (1879). T:Greymouth, New Zealand, ?R.Helms; lecto: G, fide D.J.Galloway & P.W.James, Lichenologist 9: 95 (1977).  
  Thallus ±rosette-forming, loosely attached centrally, 5–12 (–30) cm wide. Lobes large, rounded, 1.5–3 (–5) cm wide, ±discrete at apices, imbricate centrally; lobe margins indented-crenate, becoming minutely phyllidiate. Upper surface lettuce-green or brownish tawny when dry (suffused purple-red on storage), glaucous green to yellow-green when wet, wrinkled-faveolate, occasionally minutely scabrid-areolate, phyllidiate. Phyllidia at lobe margins and erupting from upper surface, fragile, simple to subcoralloid, corticate above, yellow below. Medulla yellow, often appearing patchily orange-red (e.g. at surface cracks). Photobiont green. Lower surface yellow to buff to blackened, glabrous or sparsely tomentose; pseudocyphellae numerous, yellow. Apothecia sparse to frequent, semi-immersed to sessile, (0.1–) 0.5–3 mm diam.; disc red-brown, matt, epruinose; exciple coronate, dentate-phyllidiate, with phyllidia eroding and exposing yellow medulla; epithecium minutely granular, red-brown to yellow-brown; hymenium colourless to pale straw-yellow; hypothecium pale orange-brown or yellow-brown. Ascospores ellipsoidal, 1–3-septate, 32–38 (–43) × 9–11 µm, pale yellow-brown. CHEMISTRY: Pulvinic acid, pulvinic dilactone, calycin, polyporic acid, coronatoquinone, 2α,3β,22α-triacetoxystictane, 22α-hydroxystictane-3-one, 2α,3β-diacetoxystictane-22-ol, stictane-3β,22α-diol, 2α-acetoxystictane-3β,22α-diol, 3β-acetoxystictane-2α,22α-diol and stictane-2α,3β,22α-triol.
  Occurs in Tas. as a subcanopy twig species in wet heath and scrub communities and in rainforest. Widely distributed in New Zealand.  
  Galloway et al. (2001)  

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

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