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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
Acanthothecis silicicola (Redinger) Staiger & Kalb

Mycotaxon 73: 112 (1999)

Graphis silicicola Redinger, Ark. Bot. 27A(3): 56 (1935).

T: Cerro Negro, Paraguay, G.O.A.Malme 1487; holo: S.

  Thallus dull fawn, 0.2–0.3 mm thick, somewhat cracked, smooth. Ascomata lirelliform, white, inconspicuous, numerous, straight, curved or sinuous, sometimes branched, initially immersed with closed lips, opening to form a dark slit, the margins becoming slightly raised, 0.8–2.0 (–4.0) mm long, 0.25–0.40 mm wide. Proper exciple lacking. Hymenium 75–100 µm thick. Ascospores 8 per ascus, uniseriate, 4-locular (Australian specimens), narrowly ellipsoidal, 12–14 × 4–5 µm, I–.
CHEMISTRY: Norstictic acid.
  A rare, saxicolous species in north-eastern Qld; also in Paraguay and Brazil.  
  Archer (2009a)  

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

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