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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 conceptionis Vain.

Hedwigia 38: 289 (1899)

T: Concepción, Chile, F.W.Neger 307; lecto: M, fide H.T.Lumbsch, Nova Hedwigia 56: 228 (1993).

  Thallus superficial, to c. 2 mm thick, whitish grey, matt, rough, continuous to rimose-areolate, whitish-pruinose. Epinecral layer to c. 30 µm thick. Algal layer continuous, well developed; calcium oxalate crystals sparse, scattered, small. Vegetative propagules not seen. Ascomata conspicuous, blackish, to c. 2 mm diam., ±rounded, urceolate, solitary, immersed to sessile. Disc visible from above, blackish brown, epruinose to slightly whitish-pruinose, to c. 1.8 mm diam., ±rounded; inner proper exciple not visible from above. Thalline rim margin thick, ±rounded, concolorous with and having the same surface features as the thallus, emergent. Proper exciple free, thick, blackish brown, non-amyloid. Hymenium 80–100 µm thick, not inspersed, moderately conglutinated; lateral paraphyses to c. 20 µm long. Epihymenium hyaline, egranulose. Asci 6–8-spored. Ascospores broadly ellipsoidal to ellipsoidal, with ±rounded to subacute ends, brown, non-amyloid, 18–30 × 7–14 µm, with 3–5 × 1–2 locules; locules ±rounded to angular; septa thick, regular; ascospore wall thin; endospore thick. Pycnidia immersed in the thallus; pores blackish brown. Conidia 4–6 × 1.0–1.5 µm.
CHEMISTRY: Thallus K–, C+ red, P–; containing gyrophoric acid (major), lecanoric acid (minor).
  Rare on soil in semi-arid regions of W.A.; also in Chile and Uruguay.  
  Mangold et al. (2009)  

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

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