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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
Coniarthonia wilmsiana (Müll.Arg.) Grube

Lichenologist 33: 501 (2001)

Arthonia wilmsiana Müll.Arg., Flora 69: 315 (1886).

T: Lydenburg, Transvaal, South Africa, F.Wilms 16, comm. Dr Lahm 1885; holo: G n.v.; iso: S, UPS, W n.v. [distributed as Lojka, Lichenoth. Univ. No. 95].

  Thallus in the uppermost bark layers, greenish white, effuse, finely granular. Prothalline lines distinct, dark red-brown. Photobiont in short chains; cells ellipsoidal, 10–16 × 7–10 μm. Ascomata dispersed, rounded, stellate or irregular in shape, usually not distinctly elongate, 0.24–1.80 mm wide, ±level with the thallus or slightly convex, with a dense crimson pruina. Epihymenium 20–40 μm thick, densely inspersed with crimson and, to a lesser extent, colourless crystals. Hymenium 40–50 μm thick, less densely inspersed with crimson crystals than the epihymenium. Hypothecium colourless, 40–50 μm thick. Asci dispersed, globose to subglobose, 4–8-spored. Ascospores in 3 or 4 rows, ellipsoidal to obovate, with 3 transverse septa, 22–38 × 11–16 μm, not constricted at the septa; polar cells often slightly smaller.
CHEMISTRY: Pigments K+ purple-orange; containing five unknown pigments
  Known from a single corticolous collection from rainforest in north-eastern Qld; also in South Africa and Central and South America.  
  Elix (2009c)  

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

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