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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
Buellia disciformis (Fr.) Mudd

Man. Brit. Lich. 216 (1861)

Lecidea parasema var. disciformis Fr., Novae Sched. Crit. 9 (1826); Hafellia disciformis (Fr.) Marbach & H.Mayrhofer, in B.Marbach, Biblioth. Lichenol. 74: 259 (2000).

T: Fries 215A [centre specimen]; lecto: UPS, fide K.Kalb & J.A.Elix, Mycotaxon 68: 478 (1998).

Lichen parasemus Ach., Prodr. Lich. 64 (1799), nom. illeg.; Lecidea parasema (Ach.) Ach., Methodus 35 (1803), nom. illeg.; Buellia parasema (Ach.) De Not., Giorn. Bot. Ital. 2, 1: 198 (1846), nom. inval.; Buellia parasema (Ach.) Th.Fr., Lichenogr. Scand.589 (1874), nom. illeg. T: ex agro Comensi, [Italy], S.Garovaglio; lecto: R–DE NOT, fide K.Kalb & J.A.Elix, Mycotaxon 68: 478 (1998).

  Thallus corticolous or lignicolous, immersed to superficial, 3–4 cm wide, thin to thick, rimose, whitish or grey-white, smooth to weakly verrucose. Prothallus black or absent. Apothecia common, 0.3–1.3 mm wide, sessile; disc black, epruinose, plane or slightly convex; margin black, moderately thick, persistent. Proper exciple brown-black. Epihymenium 10–15 μm thick, brown to olive-brown, K–. Hymenium 100–120 μm thick, densely inspersed with oil droplets. Hypothecium 120–170 μm thick, dark brown, somewhat paler than the exciple. Asci 8-spored. Ascospores 1-septate, 17–28 × 7–10 μm, with weak subapical wall thickenings; outer wall smooth. Conidia bacilliform, 5.5–8.5 × 0.7–1.0 μm.
CHEMISTRY: Thallus K+ yellow, C–, P+ yellow; containing atranorin (major), ±fulgidin (trace), ±fulgoicin (trace), ±norfulgoicin (trace), ±brialmontin 1 (trace), ±brialmontin 2 (trace).
  This cosmopolitan species grows on wood and bark in coastal and hinterland forests in Qld, N.S.W., Vic. and Tas. Also in Europe, Asia, Macaronesia, North America and the Pacific islands.  

Elix (2009l)


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

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