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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
Topeliopsis kantvilasii Mangold & Lumbsch

in A.Mangold, J.A.Elix & H.T.Lumbsch, Fl. Australia 57: 658 (2009)

T: Lake Dobson, Mount Field Natl Park, Tas., 1981, G.Kantvilas & P.W.James 650/81; holo: BM; iso: BM, HO.

  Thallus usually immersed, rarely superficial, to 100 µm thick, pale whitish to yellowish grey, dull to slightly glossy, smooth, continuous, non-rimose. Protocortex discontinuous, to c. 20 µm thick. Algal layer discontinuous and poorly developed; calcium oxalate crystals not seen. Vegetative propagules not seen. Ascomata conspicuous, to c. 0.8 mm diam., ±rounded, initially perithecioid, becoming apothecioid, erumpent, solitary to marginally slightly fused, immersed to somewhat emergent, then irregularly depressed-urceolate. Disc usually not visible from above, rarely becoming partly visible, dark grey, pruinose. Pores mostly minute to small, to c. 0.1 (–0.2) mm diam., ±rounded to somewhat irregular, radially split; pore margin formed by the apical proper exciple, pale yellowish, rarely slightly greyish, incurved; proper exciple otherwise not visible from above. Thalline rim thick, lacerate, often becoming eroded, occasionally slightly layered and concolorous with the thallus, but usually pale yellowish, ±exfoliating, incurved to erect internally, recurved in outer thalline rim layers. Proper exciple fused, becoming free, thick, hyaline to pale yellowish internally, yellowish to pale orange marginally, apically often brownish, slightly amyloid (I+ reddish) in upper parts, more strongly amyloid (I+ purple) towards the base and subhymenium. Hymenium to c. 90 µm thick, conglutinated; paraphyses parallel to slightly interwoven, with unthickened to slightly thickened tips; lateral paraphyses conspicuous, to c. 25 µm long. Epihymenium hyaline, in older ascomata with ±coarse greyish brown granules. Asci 8-spored; tholus thin. Ascospores transversely septate (some locules becoming indistinctly longitudinally divided), oblong to fusiform or somewhat clavate, with rounded to narrowly rounded or subacute ends, brownish to greyish brown, non-amyloid to weakly amyloid, 12–22 × 4–6 µm, with 4–8 × 1 (–2) locules; locules initially large, smaller and indistinct with age, ±rounded to angular, subglobose to oblong to irregular; septa thin to thick, ±irregular; ascospore wall thick, non-halonate.
CHEMISTRY: Thallus K+ yellow, C–, P+ orange; containing stictic acid (major), constictic acid (minor), a-acetylhypoconstictic acid (trace), cryptostictic acid (trace).
  Occurs on wood in cool-temperate rainforest and woodland above 1000 m in Tas.; endemic.  
  Mangold et al. (2009)  

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

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