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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
Miltidea ceroplasta (C.Bab.) D.J.Galloway & Hafellner
  Beih. Nova Hedwigia 79: 308 (1984). Biatora ceroplasta C.Bab., Fl. Nov. Zel. 2: 300 (1855). T: New Zealand, s. loc., Colenso; holo: BM.  
  Thallus continuous to rimose-areolate, thin to rather thick, pale grey, greenish grey, white or cream-coloured, with a thin hyaline epinecral layer. Apothecia to 2.5 mm diam.; disc orange-brown, yellow-orange, red or red-brown, epruinose, plane to convex, sometimes very markedly convex in older apothecia; margin thin, persistent or occasionally excluded in the oldest apothecia, typically entire, concolorous with the disc. Excipulum in section hyaline to pale yellow or orange, typically more intensely pigmented at the outer edge, K+ crimson or golden-yellow. Hymenium hyaline, I+ blue, densely inspersed with oil droplets that are insoluble in KOH, 90–120 µm thick, with a granular yellow-brown epihymenial layer 9–15 µm thick, K+ golden-yellow or crimson with the granules dissolving. Hypothecium hyaline to pale brown, 100–400 µm thick, sometimes massive and bulging out from beneath the hymenium, densely inspersed with oil droplets. Paraphyses 1–2 µm thick; apices slightly expanded to 2–3 µm, unpigmented. Asci 68–90 × 10–16 µm. Ascospores (13–) 17–25 × 7–12 µm, with a translucent gelatinous halo 2–4 µm thick. Pycnidia scattered, immersed in the thallus, visible as minute red dots resembling apothecial initials. Conidia c. 5 × 1 µm. CHEMISTRY: No substances detected in the thallus; the apothecia contain anthraquinone pigments.
  Common and widespread in Tas.; occurs on the smooth bark of low branches and the upper trunks of trees in cool-temperate rainforest. Also known from New Zealand and Chile. Breuss & Brunnbauer (Ann. Naturhist. Mus. Wien 99B: 727–735, 1997) reported this species from Sri Lanka, an unexpected range extension.  
  Kantvilas (2004b)  

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

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