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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 praetermissa (Trevis.) Anzi
  Comm. Soc. Crittog. Ital. 2(1): 24: (1864). Leiophloea praetermissa Trevis., Conspect. Verruc. 10 (1860). T: Central Europe; lecto: L n.v., fide T.D.V.Swinscow, Lichenologist 4: 43 (1968).  
  Thallus epilithic, rimose to areolate, pale greyish white to pale grey-green, 60–200 µm thick; areolae 0.3–0.8 (–1.4) mm wide, angular, irregular, plane to slightly convex, corticate. Algae ellipsoidal, 5–9 × 4–7 µm. Prothallus discontinuous and dark brown or not apparent; basal layer brown-black, 30–100 (–140) µm thick. Perithecia almost completely immersed, 0.18–0.3 mm diam., black; apex plane to convex; ostiole inconspicuous or in a broad shallow depression. Involucrellum contiguous with the exciple, extending down to merge with the basal layer, 50–70 µm thick. Exciple c. 15–20 µm thick, hyaline to pale greenish brown. Centrum 0.15–0.2 mm wide. Periphyses 30–50 × 1.5–2.5 µm. Asci 55–70 × 17–25 µm. Ascospores narrowly ellipsoidal to subcylindrical, 15–24 × 6.5–9.5 µm.
  Known from eastern Qld and eastern N.S.W.; grows on deeply shaded aquatic and semi-aquatic rocks. Also in central, western and northern Europe, North America, China (Hong Kong), New Guinea, New Zealand and the South Pacific (including Lord Howe Is.).  
  McCarthy (2001h)  

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

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