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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
Ramboldia plicatula (Müll.Arg.) Kantvilas & Elix

Bryologist 97: 299 (1994)

Psora plicatula Müll.Arg., Bull. Herb. Boissier 1: 35 (1893); — Lecidea plicatula (Müll.Arg.) Zahlbr., Cat. Lich. Univ. 3: 889 (1925); — Protoparmelia plicatula (Müll.Arg.) Rambold, Biblioth. Lichenol. 34: 137 (1989).

T: Kew, Vic., on sandstone, [comm.] 1892, F.R.M.Wilson 339; holo: G; iso: G.

  Thallus cream-coloured to pale brown, irregularly convex, 0.3–1.8 mm thick, deeply cracked and areolate, unevenly verruculose, to 12 cm wide; soredia and isidia absent; prothallus not apparent. Photobiont cells 9–15 µm wide. Apothecia sessile, irregularly ±rounded to auriculate, scattered or crowded, 0.5–1.8 (–3.0) mm wide; disc glossy, epruinose, plane to convex; margin thin, entire, cream-coloured to brown-black, ±persistent, but typically becoming inconspicuous in older apothecia. Exciple colourless to brown, K–. Epihymenium 10–15 µm thick, yellow-brown, K–. Hymenium 35–45 µm thick, colourless to pale brown, K–. Hypothecium colourless, 35–75 µm thick, K–; subhypothecium colourless, to 35 µm thick, K+ yellow → red. Paraphyses sparingly branched, 1.5–2.5 µm thick; apices slightly swollen, 2.5–3.5 µm thick. Asci 30–40 × 8–12 µm. Ascospores oblong-ellipsoidal, 7–12 × 3–4 µm. Conidia filiform, 15–22 × c. 0.8 µm.
CHEMISTRY: Cortex K+ yellow; medulla K–, C–, P–; containing baeomycesic acid (major), squamatic acid (minor), barbatic acid (trace).
  Scattered in S.A., Qld, N.S.W., A.C.T., Vic. and Tas; occurs mainly on sandstone rocks in open, eucalypt forest. Endemic.  
  Elix (2009e)  

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

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