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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 glaucina Ach.
  Lichenogr. Universalis 675 (1810). T: Europe; holo: H-ACH? n.v.  
  Thallus epilithic, deeply areolate, pale to medium grey-brown or dark olive-brown, matt, ±smooth, 0.1–0.5 (–1) mm thick, corticate; areolae angular, plane to slightly convex, 0.1–0.4 mm wide; side walls and margins of areolae often blackish. Algae globose, 7–15 µm diam. Prothallus brown-black; basal layer thick, brown-black. Perithecia ±completely immersed, usually solitary, ±central in areolae, 0.1–0.25 mm diam.; apex plane to slightly concave, rarely slightly convex; ostiole inconspicuous or in a shallow depression. Involucrellum black, apical or extending to exciple base level and merging with the blackish basal layer, 20–40 µm thick. Exciple c. 15 µm thick, hyaline to greenish black. Centrum 0.08–0.2 mm wide. Periphyses 20–30 × 1.5–2.5 µm. Asci 40–65 × 12–17 µm. Ascospores narrowly to broadly ellipsoidal, 10–20 × 5–9 µm. .
  Grows on limestone in southern Vic. Also in western and northern Eurasia and North America.  
  McCarthy (2001h)  

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

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