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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 muscigena (Stizenb.) Kalb

Mycotaxon 79: 322 (2001)

Thelotrema muscigenum Stizenb., Jahresber. St. Gallischen Naturwiss. Ges. 1888/89: 247 (1890).

T: Cape Province, South Africa, Aug. 1887, McOwan s.n.; holo: ZT; iso: H-NYL 22438.

Thelotrema indicum Hale, Mycotaxon 3: 177 (1975). T: Tamil Nadu, India, M.E.Hale & P.G.Patwardhan 40185; holo: US.

Topeliopsis muscicola Kantvilas & Vězda, Lichenologist 32: 348 (2000). T: Quamby Bluff, Tas., alt. 800 m, on bark of Nothofagus cunninghamii in rainforest, 14 Aug. 1985, G.Kantvilas 202/85; holo: HO; iso: Herb. Vězda n.v.

  Thallus immersed to superficial, to c. 150 µm thick, pale yellowish grey to greyish green or pale to medium olive, dull to slightly glossy, smooth, continuous to verruculose, non-rimose. True cortex continuous or discontinuous, to c. 20 µm thick, consisting of periclinal hyphae, occasionally the cortex absent or replaced by a discontinuous protocortex to c. 10 µm thick. Algal layer poorly to well developed, continuous or not; calcium oxalate crystals not seen. Vegetative propagules not seen. Ascomata conspicuous, to c. 0.7 mm diam., ±rounded, initially perithecioid, becoming apothecioid, sessile, solitary to marginally slightly fused, distinctly emergent, subglobular in younger stages, becoming urceolate. Disc not visible from above, occasionally becoming partly visible, flesh-coloured in younger ascomata, becoming pale to dark brownish grey, epruinose. Pores small to moderately broad, rarely gaping, to c. 0.5 mm diam., irregular to stellate; pore margin split; proper exciple not visible from above. Thalline rim margin coarsely cracked to slightly lacerate; thalline rim apically pruinose, off-white, incurved; base smooth, ±cylindrical, conspicuously reddish brown. Proper exciple fused, thick, hyaline to pale yellowish internally, pale yellowish brown marginally, apically sometimes dark brown; internal part of exciple and subhymenium usually slightly to distinctly amyloid. Hymenium to c. 250 (–300) µm thick, conglutinated; paraphyses parallel, with unthickened to slightly thickened tips; lateral paraphyses inconspicuous, to c. 30 µm long. Epihymenium initially hyaline, becoming brownish, without granules, rarely with small sparse crystals. Asci 1 (–2)-spored; tholus initially thick, becoming thin. Ascospores muriform, cylindrical to ±rounded-fusiform, with ±rounded to narrowly rounded ends, initially hyaline, becoming yellowish to pale brown at late maturity, mature ascospores strongly amyloid, 100–210 × 20–55 µm, with numerous locules; locules small, mostly ±rounded to slightly angular, subglobose to irregularly subglobose; ascospore wall initially somewhat thickened, thin at maturity, with a thin halo; endospore thin; transverse septa thin, distinct and ±regular in younger stages, becoming irregular and disappearing, finally the ascospores dissolving internally and generating ascoconidia. Ascoconidia oblong-irregular, to c. 4 × 1 µm.
CHEMISTRY: Thallus K–, C–, P–; no secondary compounds detectable by TLC.
  Occurs in southern Vic. and Tas.; grows over epiphytic bryophytes, rarely on wood or tree bark and on rocks in cool-temperate rainforest, wet-sclerophyll forest, and in coastal, subalpine and alpine heath and moorland, at altitudes of 40–1080 m. Also in southern Africa, India and New Zealand.  
  Mangold et al. (2009)  

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

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