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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
Placidium pilosellum (Breuss) Breuss
  Ann. Naturhist. Mus. Wien 98B, Suppl.: 39 (1996). Catapyrenium pilosellum Breuss, Stapfia 23: 98 (1990). T: near Crusheen, Co. Clare, Ireland, 1977, A.M.Burnett; holo: Herb. M.R.D.Seaward 102259. Catapyrenium bullatescens P.M.McCarthy, Muelleria 7: 317 (1991). T: Limestone Valley Ck, 9 km NE of Canowindra, N.S.W., 8 Aug. 179, H.Streimann 9253; holo: CANB.  
  Squamae loosely attached to partly ascending, solitary and scattered to ±imbricate, rounded or lobate, plane to undulate, with deflexed to revolute margins, pale brown to orange-brown, 2–6 mm wide, 0.25–0.35 mm thick. Lower surface usually pale, occasionally brown to blackish, anchored by hyaline rhizohyphae, lacking rhizines. Perithecia to 0.55 mm diam. Exciple hyaline to pale yellowish brown. Periphyses 30–40 µm long. Asci 70–90 × 10–15 µm. Ascospores ellipsoidal, 12–17 × 5.5–7.5 µm. Pycnidia rather sparse, marginal, appearing as hemispherical protrusions to 0.3 mm diam. Conidia oblong-ellipsoidal, 3–4 µm long.
  Occurs in W.A., N.T., S.A., Qld, N.S.W. and Vic.; grows on soil or humus, often among bryophytes. Widespread and common in Europe and North America.  
  Breuss (2001c)  

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

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