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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 exacta Malcolm, P.M.McCarthy & Kantvilas
  Mycotaxon 55: 353 (1995). T: Conifer Track, 300 m from junction with Waterfalls Track, Hira, Nelson, South Island, New Zealand, 3 July 1994, W.Malcolm 2011; holo: WELT.  
  Thallus epiphloeodal, continuous to rimose, pale brownish green, matt to slightly glossy, smooth to minutely rugulose, 40–80 µm thick, ecorticate; prothallus not apparent. Algae Trentepohlia; cells 6–12 × 6–10 µm. Perithecia superficial, hemispherical to subglobose, 0.3–0.5 mm diam., reddish brown; apex rounded; ostiole usually inconspicuous. Involucrellum contiguous with the exciple, these diverging near the base, to 60 µm thick, containing algae, K–. Exciple c. 25–30 µm thick, pale orange-brown. Centrum 0.2–0.33 mm wide. Asci elongate-cylindrical, 113–160 × 14–18 µm. Ascospores elongate-cylindrical, 15-septate, 58–97 × 4–6 µm; perispore not apparent. Pycnidia not seen.
  Very rare in Tas., on bark in cool-temperate rainforest. Also on siliceous rocks in New Zealand.  
  McCarthy (2001b)  

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

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