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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 aeneus (Müll.Arg.) Lumbsch

J. Hattori Bot. Lab. 66: 158 (1989)

Urceolaria actinostoma var. aenea Müll.Arg., Rev. Mycol. 38: 12 (1888); — Diploschistes actinostomus var. aeneus (Müll.Arg.) Steiner, Sitzungsber. Kaiserl. Akad. Wiss. Math.-Naturw. Cl. 106: 227 (1897).

T: West Texas, U.S.A., 1879, J.Boll; lecto: G, fide H.T.Lumbsch, loc. cit.


Thallus epilithic, to c. 1.8 mm thick, red-brown to brown or bronze-coloured, dull to glossy, rimose to verrucose-areolate. Epinecral layer to c. 50 µm thick. Algal layer continuous, well developed; calcium oxalate crystals sparse, scattered, small to large. Vegetative propagules not seen. Ascomata conspicuous, blackish, to c. 2.5 mm diam., ±rounded, perithecioid, solitary, immersed. Disc not visible from above. Pores small, to c. 0.1 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 100–130 µm thick, not inspersed, moderately conglutinated; lateral paraphyses to c. 20 µm long. Epihymenium hyaline to pale brown, egranulose. Asci 4–6-spored. Ascospores broadly ellipsoidal, with ±rounded to subacute ends, brown, non-amyloid, 16–26 × 8–18 µm, with 4–6 × 1–3 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), ±diploschistesic acid (minor).
  Occurs on siliceous rocks in south-eastern N.S.W. and Tas.; subcosmopolitan.  
  Mangold et al. (2009)  

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

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