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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
Menegazzia conica P.James
  Fl. Australia 54: 312 (1992)
T: New England Natl Park, N.S.W., 17 Oct. 1977, A.W.Archer 341; holo: MEL.
  Thallus firmly attached, 1–3 (–10) cm wide. Lobes numerous, ±radiating at margin, 1.5–2.5 mm wide, contiguous throughout or sometimes partly discrete, hollow, inflated, becoming compacted and ridged in older parts of thallus and often overlapping, not or sparingly blackened laterally; margins ±even or with short, toe-like laterals. Upper surface matt or partially shining, without blotches or soredia, pale grey to green-grey, not suffused brownish. Upper side of cavity whitish to pale brown, dark brown below. Perforations frequent throughout, 0.5–1.5 mm wide, rounded or ±oval by compression, somewhat gaping when old; margin often raised, sometimes conical. Apothecia abundant, laminal, rarely submarginal, 2–3 mm wide, obconical, sessile to pedicellate; disc epruinose, red-brown; exciple smooth, later nodulose to crenulate. Ascospores 2 per ascus, 48–55 × 28–35 µm; wall to 3 µm thick. Pycnidia rare; ostiole blackened. Conidia 4.5–7 × 0.5 µm. CHEMISTRY: cortex K+ yellow (atranorin); medulla K-, KC-, C-, P+ rust red (fumarprotocetraric acid).
  Occurs in N.S.W. on bark, frequently encircling twigs of rainforest trees.  
  James & Galloway (1992)  

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

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