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). |
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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). |
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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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