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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
Agonimia tristicula (Nyl.) Zahlbr.
  Oesterr. Bot. Z. 59: 351 (1909). Verrucaria tristicula Nyl., Flora 48: 356 (1865). T: Aberdeenshire, Scotland, T.Jones; holo: H, n.v.  
  Thallus minutely squamulose. Squamules rounded, elongate or sparingly branched, crowded to imbricate, prostrate to erect, 0.1–0.8 mm long, (0.05–) 0.2–0.5 mm wide, pale to medium grey-brown or olive-green, dark green when wet. Perithecia semi-immersed to superficial, black, subovate, 0.25–0.4 (–0.5) mm diam., usually located between squamules; apex plane to slightly convex; surface minutely wrinkled to longitudinally plicate especially near apex. Centrum 0.2–0.4 mm wide. Periphyses simple to sparingly branched, 30–60 × 1–2.5 µm. Asci (1 or) 2-spored, clavate, 150–220 × 35–55 µm. Ascospores broadly to elongate-ellipsoidal, 65–135 × 30–50 µm, colourless to pale brown (darkening with age).
  Known from two localities in south-eastern N.S.W. where it grows on soil and calcicolous bryophytes. Also in North America, Europe, Macaronesia, Japan, New Guinea and Lord Howe Is.  
  McCarthy (2001c)  

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

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