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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
Verrucaria halizoa Leight.
  Lich. Fl. Gr. Brit. 436 (1871). T: Great Britain; holo: n.v. Verrucaria cribbii R.W.Rogers , Austral. Syst. Bot. 1: 181 (1988). T: south coast of Heron Is., Qld, 28 Jan. 1988, R.W.Rogers s.n.; holo: MEL.  
  Thallus epilithic, continuous to sparingly rimose, medium green to black, matt, smooth, gelatinous when wetted and 20–40 (–60) µm thick. Algae subglobose to globose, 4–9 µm diam. Prothallus not apparent. Perithecia semi-immersed to almost superficial, hemispherical to subconical, solitary, occasionally clustered, 0.18–0.3 mm diam., dull to glossy black; apex rounded; ostiole inconspicuous or a minute shallow depression. Involucrellum extending to exciple base level, often partly covered by a 15–25 µm thick layer of thallus, 30–40 µm thick and brown-black in thin section. Exciple c. 15 µm thick, grey-brown to brown-black. Centrum 0.11–0.17 mm wide. Periphyses c. 20 × 1.5 µm. Asci 25–32 × 10–15 µm. Ascospores ellipsoidal to subglobose, 7.5–12 × 4.5–6.5 µm.
  Known from coral in the lower littoral at one locality on the Great Barrier Reef, Qld. Also in northern Europe, North America, China (Hong Kong) and New Zealand.  
  McCarthy (2001h)  

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

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