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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
Nephroma australe A.Rich.

in Dumont d’Urville, Voy. Astrolabe, Bot. 1: 31 (1832)

T: Havre de l’Astrolabe (Kaiteriteri), Nelson, New Zealand; holo: PC?, not traced.

[Nephroma antarcticum auct. non (Wulfen) Nyl.: F.R.M.Wilson, Proc. Roy. Soc. Victoria 5: 141–177 (1893)]

  Thallus orbicular to linear-spreading, 2–13 cm wide, variously lobed. Lobes sublinear to irregularly branched, initially ±flattened, contiguous and closely attached centrally, becoming palmate (to 2 cm long and 1 cm wide), imbricate and elongate-spreading, becoming constricted towards the apothecia, ascending at the apices and growing outward; margins entire, undulate, occasionally irregularly notched or lobulate-dissected, often inrolled when dry. Upper surface yellowish green (usnic acid) or yellow (in bright sunlight) or greenish brown (in shade), discolouring to dull yellow or olive in storage, lacking isidia and maculae; lobules laminal and marginal, flattened or terete and resembling phyllidia. Sterile lobes finely wrinkled; fertile lobes smooth and becoming distinctly ridged, scale-like on dorsal side of apothecia. Medulla white. Photobiont Coccomyxa. Lower surface pale creamish or buff to brown, smooth or wrinkled, whitish at the margins, usually with cephalodia (containing Nostoc) under the cortex. Apothecia rounded to reniform, rarely shallowly lobed or dividing into separate discs, 5–8 (–10) mm wide, 3–5 (–6) mm long; disc red-brown, matt or glossy, smooth; margin entire, pale, slightly raised, ±wrinkled; dorsal side areolate-scabrid. Ascospores 3-septate, 17–20 (–22) × 5.0–7.5 μm, pale reddish brown. Pycnidia uncommon, marginal, semi-immersed, dark brown. Conidia not seen..
CHEMISTRY: Race 1: containing usnic acid, hopane-6α,22-diol (major), hypostictic acid (minor), hyposalazinic acid (minor); race 2: ±usnic acid, hopane-6α,22-diol (major), two unidentified terpenoids with low Rf (minor), ±additional unidentified terpenes (traces).
  Occurs in N.S.W., Vic. and Tas.; corticolous on tree trunks, branches and twigs and saxicolous or muscicolous in sheltered or exposed positions in cool-temperate rainforest, wet scrub or open eucalypt forest. Also in South America and New Zealand.  
  Louwhoff (2009a)  

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

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