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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 chlorotica (Ach.) Müll.Arg.
  Revue Mycol. 6: 20 (1884). Verrucaria chlorotica Ach., Lichenogr. Universalis 283 (1810). T: Lusatia [Lausitz, Germany], Mosig s.n.; holo: H-ACH.  
  Thallus epilithic, continuous, rimose or areolate, pale to medium grey-brown or greenish brown, to 0.1 mm thick, ecorticate; prothallus blackish or not apparent. Algae Trentepohlia; cells 6–14 × 5–12 µm. Perithecia superficial, hemispherical to subglobose, 0.18–0.32 mm diam.; apex rounded or very slightly pointed; ostiole inconspicuous. Involucrellum dull black, contiguous with and almost enclosing the exciple, not enclosing algae, greenish black to purple-black in thin section. Exciple 10–15 µm thick, hyaline to black. Centrum 0.13–0.22 mm wide. Asci ±cylindroclavate, 80–112 × 6–10 µm. Ascospores fusiform or oblong, 3-septate, 16–32 × 4–6 µm; perispore usually not apparent. Pycnidia hemispherical, c. 0.1 mm diam., black. Conidia fusiform, 2–3 (–4) × 0.7–1 µm.
  Occurs in Christmas Is., eastern Qld, eastern N.S.W., Vic. and Tas.; grows on shaded and semi-aquatic siliceous rocks. Widespread in temperate regions of both hemispheres; less common (overlooked?) in the tropics.  
  McCarthy (2001b)  

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

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