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 gypsaceus (Ach.) Zahlbr. | ||
Hedwigia 31: 35 (1892) Urceolaria gypsacea Ach., Lichenogr. Universalis 339 (1810); — Lecanora scruposa var. gypsacea (Ach.) Sommerf., Suppl. Fl. Lapp. 100 (1826); — Urceolaria scruposa var. gypsacea (Ach.) Körb., Syst. Lich. Germ. 168 (1855); — Urceolaria albissima var. gypsacea (Ach.) Arnold, Flora 67: 417 (1884). T: Switzerland, J.Schleicher; lecto: GOET, fide H.T.Lumbsch, Lichenologist 20: 22 (1988). |
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| Thallus epilithic, to c. 0.3 mm thick, greenish white to whitish grey, dull, rough, rimose-areolate, heavily whitish-pruinose. Epinecral layer to c. 30 µm thick. Algal layer continuous, well developed; calcium oxalate crystals sparse, scattered, small to large. Vegetative propagules not seen. Ascomata conspicuous, blackish, to c. 5 mm diam., ±rounded, urceolate, solitary, immersed. Disc visible from above, blackish brown, epruinose to 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. Proper exciple free, thick, blackish brown, non-amyloid. Hymenium 120–190 µm thick, not inspersed, moderately conglutinated; lateral paraphyses conspicuous, to c. 20 µm long. Epihymenium hyaline to pale brown, granulose. Asci 4-spored. Ascospores broadly ellipsoidal, with acute to subacute ends, brown, non-amyloid,
25–40 × 10–17 µm, with 4–7 × 1–2 locules; locules ±rounded to angular; septa thick, regular; ascospore wall thin to thick; endospore thick. Pycnidia not seen. CHEMISTRY: Thallus K–, C+ red, P–; containing lecanoric acid (major), orsellinic acid (minor). |
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| Grows on moderately shaded, calcareous rocks in S.A. and southern N.S.W.; subcosmopolitan. | ||
| Mangold et al. (2009) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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