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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 poculifera (Müll.Arg.) D.J.Galloway & P.James
  Lichenologist 12: 301 (1980); Sticta poculifera Müll.Arg., Flora 65: 304 (1882). T: Mt Gower, Lord Howe Island, C.Moore (1869) or J.P.Fullagar (1873, 1874); holo: G 002123; iso: BM, MEL.  
  Thallus rosette-forming to irregularly spreading, loosely attached centrally, 3–8 (–12) cm wide. Lobes dissected-laciniate, 1–4 cm long, 4–10 mm wide, discrete, incised-pectinate at margins, irregularly branched, shallowly to deeply lacerate; contiguous lobes consistently discrete to complex-imbricate; lobe margins slightly thickened below, uneven, crenate to torn and rather ragged, with fine delicate isidia, or finely white-tomentose. Upper surface pale glaucous buff when dry (reddish on storage), lettuce-green to emerald-green when wet, wrinkled or pitted in parts, matt, minutely scabrid areolate in parts, minutely pubescent towards margins (×10 lens); without maculae or pseudocyphellae. Isidia mainly marginal or regenerating from laminal cracks, densely clustered, minutely coralloid, eroding and appearing sorediate. Medulla yellow. Photobiont green. Lower surface pale buff or yellowish and glabrous at margins, patchily tomentose centrally. Pseudocyphellae conspicuous, scattered, yellow. Apothecia rare to occasional, pedicellate, 1–5 (–10) mm diam.; disc red-brown, epruinose; exciple concolorous with thallus, granular-isidiate and eroding yellow at margins; epithecium pale red-brown, paler in K; hymenium colourless to pale straw-yellow; hypothecium pale brownish pink, well delimited from medulla. Ascospores broadly fusiform-ellipsoidal, 3-septate, 18–25 × 5.5–7.5 µm, pale to dark red-brown. CHEMISTRY: Pulvinic acid, pulvinic dilactone, calycin, 3β-acetoxyfern-9(11)en-12-one, fern-9(11)-en-3β,12β-ol, 3β-hydroxyfern-9(11)-en-12-one, β-acetoxyfern-9(11)-en-12β-ol, 3β-acetoxyfern-9(11)-3-en-19β-ol and unidentified triterpenoids.
  Occurs on rocks and trees in forest in north-eastern Qld. Also in Lord Howe Is., Norfolk Is., New Zealand and the Palaeotropics.  
  Galloway et al. (2001)  

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

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