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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 lecideoides (A.Massal.) Trevis. var. minuta Hepp
  Lich. Eur. [683] (1860). T: Streitberg, [Bayern, Germany], F.C.G.Arnold; holo: M n.v.; iso: MEL.  
  Thallus epilithic, deeply areolate, pale to medium greenish grey to grey-brown, matt, ±smooth, 80–120 µm thick, corticate; areolae plane to slightly convex, 0.1–0.6 mm wide; side walls of areolae concolorous to dark brown. Algae globose, 7–15 µm diam. Prothallus dark grey to black or not apparent; basal layer not apparent. Perithecia two-thirds immersed to almost superficial, usually solitary at the margins of areolae or between areolae, 0.12–0.24 mm diam., black; apex slightly to strongly convex; ostiole inconspicuous or in a 20–40 µm wide depression. Involucrellum extending to exciple base level, 25–45 µm thick. Exciple 15–20 µm thick, hyaline to greenish black. Centrum 0.08–0.12 mm wide. Periphyses 15–20 × 2–3 µm. Asci 39–53 × 13–17 µm. Ascospores narrowly to broadly ellipsoidal, 9–18 × 5–8 µm.
  Grows on exposed sandstone and granite in temperate to semi-arid localities in S.A. and N.S.W. Also in central and southern Europe where it is almost exclusively calcicolous.  
  McCarthy (2001h)  

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

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