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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
Diploschistes scruposus (Schreb.) Norman

Nyt. Mag. Naturvidensk. 7: 232 (1853)

Lichen scruposus Schreb., Spic. Fl. Lips. 133 (1771); — Scutellaria scruposa (Schreb.) Baumg., Fl. Lips. 583 (1790); — Patellaria scruposa (Schreb.) Hoffm., Desc. Adumb. Pl. Lich. 1: 54 (1790); — Verrucaria scruposa (Schreb.) Hoffm., Deutschl. Fl. 186 (1796); — Urceolaria scruposa (Schreb.) Ach., Methodus 147 (1803); — Parmelia scruposa (Schreb.) Hepp, Flechten Fl. Würzburg 43 (1824); — Lecanora scruposa (Schreb.) Sommerf., Suppl. Fl. Lapp. 100 (1826); — Psora scruposa (Schreb.) Hampe, in A.E.Fürnrohr, Naturh. Topogr. Regensburg 2: 251 (1839); — Lagerheimina scruposa (Schreb.) Kuntze, Revis. Gen. Pl. 2: 478 (1891)

T: Germania, J.C.D. von Schreber; lecto: H-ACH 035, fide H.T.Lumbsch, J. Hattori Bot. Lab. 66: 184 (1989).

  Thallus epilithic, to c. 2.5 mm thick, grey to greenish grey, glossy, rimose-areolate, epruinose. Epinecral layer to c. 40 µm thick. Algal layer continuous, well developed; calcium oxalate crystals sparse, scattered, small. Vegetative propagules not seen. Ascomata conspicuous, blackish, to c. 1.8 mm diam., ±rounded, urceolate, solitary, immersed. Disc visible from above, blackish brown, epruinose to slightly greyish-pruinose; inner and apical proper exciple visible from above, free, black, epruinose to slightly greyish-pruinose. Thalline rim margin thin, ±rounded, concolorous with and having the same surface features as the thallus, immersed to slightly erect. Proper exciple free, thick, blackish brown, non-amyloid. Hymenium 100–140 µm thick, not inspersed, moderately conglutinated; lateral paraphyses conspicuous, to c. 40 µm long. Epihymenium hyaline to pale brown, granulose. Asci 6–8-spored. Ascospores ellipsoidal, with subacute ends, brown, non-amyloid, 25–40 × 10–18 µm, with 4–7 × 1–3 locules; locules ±rounded to angular; septa thick, regular; ascospore wall thin to thick; endospore thick. Pycnidia not seen.
CHEMISTRY: Strain I: Thallus K–, C+ red, P–; containing lecanoric acid (major), orsellinic acid (minor). Strain II: Thallus K+ yellow to red, C+ red, P–; containing diploschistesic acid (major), lecanoric acid (major), orsellinic acid (minor).
  Common and widespread in southern Australia (S.A., N.S.W., A.C.T., Vic. and Tas.); grows on siliceous rocks in semi-arid and temperate regions and in alpine habitats. Cosmopolitan.  
  Mangold et al. (2009)  

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

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