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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 darlingtonii Frisch & Kalb

Lichenologist 38: 39 (2006)

T: Darlington Range, Qld, K. & A.Kalb 33979; holo: CANB.

  Thallus endophloeodal to epiphloeodal, to 100 µm thick, pale yellowish grey, glossy, smooth, continuous to slightly verruculose, non-rimose. Protocortex ±continuous, to c. 25 µm thick, in some parts becoming conglutinated and forming a true cortex of mostly irregular hyphae. Algal layer discontinuous and poorly developed; calcium oxalate crystals not seen. Vegetative propagules not seen. Ascomata inconspicuous, to c. 0.7 mm diam., ±rounded, perithecioid or apothecioid, erumpent, solitary to marginally fused, immersed to emergent, then irregularly depressed-hemispherical to depressed-urceolate. Disc usually not visible from above, rarely partly visible, greyish to pale greyish brown, epruinose to slightly pruinose. Pores minute to small, to c. 0.1 mm diam., mostly irregular; pore margin entire to slightly split, incurved; proper exciple usually not visible from above, in more open ascomata becoming partly visible, entire to slightly split, whitish, incurved. Thalline rim in two sections; inner parts coarsely cracked and thick, lacerate and slightly layered, predominantly incurved, these occasionally becoming slightly erect towards an outer margin that is off-white, often indistinct and eroded or fused with inner rim parts, coarsely cracked, incurved to erect, concolorous with the thallus. Proper exciple fused; apices occasionally becoming ±free, thin to thick, hyaline internally, pale yellowish to pale brownish marginally, apically covered with greyish granules, often incorporating substratum particles, ±amyloid towards the base and subhymenium. Hymenium to c. 150 µm thick, conglutinated; paraphyses parallel to slightly interwoven, with unthickened to slightly thickened tips; lateral paraphyses inconspicuous, to c. 25 µm long. Epihymenium hyaline, without or with a few greyish granules. Asci 8-spored; tholus initially thick, thin when mature. Ascospores transversely septate, oblong to fusiform, with narrowly rounded to subacute ends, hyaline, non-amyloid to faintly amyloid, 35–60 × 6–10 µm, with 10–16 locules; locules rather large, ±rounded to slightly angular, lentiform or oblong; septa thin, irregular; ascospore wall thin, often with a thin halo.
CHEMISTRY: Thallus K+ yellow, C–, P+ orange; containing stictic (major), constictic acid (minor), a-acetylconstictic acid (minor), consalazinic acid (minor).
  Endemic to south-eastern Qld; grows on bark at the type locality, a subtropical rainforest at 980 m.  
  Mangold et al. (2009)  

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

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