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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 crassa P.M.McCarthy
  Biblioth. Lichenol. 52: 41 (1993). T: near Tchupala Falls, Palmerston [Wooroonooran] Natl Park, 30 km W of Innisfail, 70 km S of Cairns, Qld, Mar. 1988, A. & M.Aptroot 22594; holo: MEL.  
  Thallus epilithic, continuous to faintly and superficially rimose, pale greenish brown, very smooth to minutely rugulose, matt to slightly glossy, 0.15–0.6 mm thick, heavily impregnated with crystals, corticate; prothallus medium brown to black. Algae Trentepohlia; cells 6–15 × 6–12 µm. Perithecia immersed in the thallus, 0.26–0.37 mm diam.; apex plane to slightly convex, 0.15–0.24 mm diam.; ostiole inconspicuous or in a shallow depression. Involucrellum extending to exciple base level, pale brown to medium yellow-brown at the middle and lower levels, dark olive-brown near the apex, 20–45 µm thick. Exciple 20–35 µm thick, hyaline to pale brown. Centrum 0.22–0.3 mm wide. Asci elongate-fusiform to elongate-cylindrical, 109–126 × 9–12 µm. Ascospores fusiform to elongate-fusiform, 7-septate, 18–29 × 4–6 µm; perispore not apparent. Pycnidia immersed in the thallus. Conidia narrowly ellipsoidal to fusiform, 2–3 × 1 µm.
  Grows on deeply shaded siliceous rocks in montane rainforest in north-eastern Qld; also in the Solomon Islands.  
  McCarthy (2001b)  

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

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