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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
Porina ulceratula Zahlbr.
  Ark. Hydrobiol., Suppl. 11: 734 (1934). T: Subang Pass, Padong R., Sumatra, Indonesia, 4 Mar. 1929, F.Ruttner s.n.; holo: W; iso: UPS.  
  Thallus epilithic, continuous to sparingly rimose, pale grey-brown, matt, smooth to rugulose, 20–40 (–60) µm thick, ecorticate; prothallus not apparent. Algae Trentepohlia; cells 6–18 × 6–14 µm. Perithecia semi-immersed, hemispherical, 0.23–0.36 mm diam.; apex rounded to slightly flattened; ostiole inconspicuous or in a shallow 40–80 µm wide depression. Involucrellum at first concolorous with the thallus, later medium brown, contiguous with the exciple and extending to exciple base level, 40–65 µm thick, containing algae, K–. Exciple 20–25 µm thick, hyaline to pale brown. Centrum 0.15–0.22 mm wide. Asci elongate-cylindrical to narrowly obclavate, 97–110 × 12–15 µm. Ascospores fusiform, 3-septate,
19–28 × 5.5–7.5 µm; perispore 1–1.5 µm thick. Pycnidia semi-immersed, 60–80 µm diam., resembling miniature perithecia. Conidia narrowly ellipsoidal to fusiform, 2–3 × 0.5–1 µm.
  Occurs in north-eastern Qld, on semi-aquatic siliceous rocks. Also in Sumatra and Taiwan.  
  McCarthy (2001b)  

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

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