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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 muscorum (Scop.) R.Sant. subsp. bartlettiiLumbsch

Herzogia 7: 602 (1987)

T: NW of Ruahina limestone plateau, North Island, New Zealand, J.Bartlett 25905; holo: BM.

  Thallus superficial, to c. 2 mm thick, grey to whitish grey, dull or glossy, rimose-areolate, epruinose or 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. 1.6 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 to slightly erect. Proper exciple free, thick, blackish brown, non-amyloid. Hymenium 120–140 µm thick, not inspersed, moderately conglutinated; lateral paraphyses conspicuous, to c. 30 µm long. Epihymenium hyaline to pale brown, granulose. Asci 8-spored. Ascospores ellipsoidal to broadly ellipsoidal, with ±rounded to subacute ends, brown, non-amyloid, 19–30 × 5–14 µm, with 4–6 × 1–2 locules; locules ±rounded to angular; septa thick, regular; ascospore wall thin to thick; endospore thick. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellowish to red, C+ red, P–; containing diploschistesic acid (major), lecanoric acid (major), orsellinic acid (minor).
  Common and widespread in southern and eastern Australia (W.A., S.A., Qld, N.S.W., A.C.T., Vic. and Tas.). This lichen is a juvenile parasite on Cladonia spp., and fragments of the host can often be found at the margins of mature specimens; restricted to the Southern Hemisphere, occurring in South America, southern and eastern Africa and Australasia.  
  Mangold et al. (2009)  

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

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