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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
Parmelia protosignifera Elix & J.Johnst.
  Mycotaxon 31: 493 (1988). T: Tinderry Pic [Peak], E of Michelago, N.S.W., 8 Dec. 1977, J.A.Elix 4051; holo: CANB; iso: MEL.  
  Thallus loosely adnate, thick, leathery, to 8–15 cm wide. Lobes imbricate, crowded, sublinear, 2–10 mm wide, sometimes lobulate with age in thallus centre; laciniae often building thallus into a thick, pulvinate mat; apices rotund; lobules marginal, suberect. Upper surface pale grey or becoming brownish, dull, smooth to rugose or foveolate and extensively cracked, lacking soredia and isidia; lobe apices shiny; white-reticulate maculae soon becoming cracked and pseudocyphellate; pseudocyphellae mainly laminal, effigurate, dense, reticulate, appearing raised. Lower surface densely rhizinate; rhizines simple, dichotomously or sparingly squarrosely branched, 0.8–1.2 mm long. Apothecia common, sessile to subpedicellate, 4–8 mm wide; disc concave, becoming undulate-distorted; thalline exciple pseudocyphellate. Ascospores 11–15 × 8–9 µm. Pycnidia common. Conidia bifusiform, 6–7 × 1 µm. CHEMISTRY: cortex K+ yellow; medulla K+ pale yellow-brown, C-, P+ red-orange; containing atranorin, chloroatranorin and protocetraric acid (major).
  Occurs on rock and soil in subalpine areas of south-eastern Australia (N.S.W., A.C.T., Vic. and Tas.); also occurs in New Zealand.  
  Elix (1994o)  

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

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