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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 candidissimus (Kremp.) Zahlbr.

Cat. Lich. Univ. 2: 660 (1924)

Limboria candidissima Kremp., in T.Unger & T.Kotschy, Die Insel Cypern 166 (1865).

T: Kythraea, Cyprus, T.Unger 49; holo: M.

Limboria actinostoma β farinosa Anzi, Comm. Soc. Crit. Ital. 1(3): 163 (1862); — Diploschistes actinostomus var. farinosus (Anzi) Zahlbr., Cat. Lich. Univ. 2: 654 (1924); — Diploschistes farinosus (Anzi) Vĕzda, Lich. Sel. Exs. 49: [1204] (1974). T: Fiesole, Toscaza, Italy, coll. unknown; lecto: M, fide H.T.Lumbsch, J. Hattori Bot. Lab. 66: 165 (1989).

  Thallus epilithic, to c. 1.8 mm thick, 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 abundant, scattered, small to large. Vegetative propagules not seen. Ascomata conspicuous, blackish, to c. 1.5 mm diam., ±rounded, perithecioid, solitary, immersed. Disc not visible from above. Pores small, to c. 0.2 mm diam., ±rounded; 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 120–160 µm thick, not inspersed, moderately conglutinated; lateral paraphyses to c. 20 µm long. Epihymenium hyaline to pale brown, egranulose to granulose. Asci 4–8-spored. Ascospores broadly ellipsoidal, with acute to subacute ends, hyaline to light brown, non-amyloid, 24–34 × 14–20 µm, with 4–7 × 1–4 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).
  Occurs on calcareous rocks in S.A. and western Vic.; locally common in exposed habitats. Also in the Mediterranean region and India.  
  Mangold et al. (2009)  

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

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