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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
Ocellularia chiriquiensis (Hale) Hale

Mycotaxon 11: 136 (1980)

Leptotrema chiriquiense Hale, Smithsonian Contr. Bot. 38: 50 (1978).

T: Panama, M.E.Hale 46035; holo: US.

  Thallus endophloeodal to epiphloeodal, to c. 400 µm thick, pale greenish grey to pale yellowish grey, dull to glossy, smooth to patchily slightly rough, continuous to ±verrucose, rimose or not. Protocortex continuous or discontinuous, to c. 20 µm thick. Algal layer well developed, continuous; calcium oxalate crystals moderately large and scattered. Vegetative propagules not seen. Ascomata inconspicuous or conspicuous when emergent, to c. 1 mm diam., ±rounded to irregular, perithecioid, solitary to marginally fused, immersed to ±emergent, then verrucose-irregular to verrucose-hemispherical. Disc and proper exciple not visible from above; thalline rim margin to 0.1 mm diam., ±rounded, entire to slightly split, moderately thick, often sunken, concolorous with the thallus to brighter or brownish; thalline rim incurved. Proper exciple fused, moderately thick, orange to reddish brown or brownish with ±distinct carbonisation distally, distinctly prosoplectenchymatous, occasionally amyloid at the base. Hymenium to c. 350 µm thick, not inspersed, moderately conglutinated; paraphyses ±bent to distinctly curly towards the tips, parallel to slightly interwoven, unbranched, with unthickened to moderately thickened tips; columellar structures absent. Epihymenium evanescent in younger stages to hyaline and without granules. Asci 1-spored; tholus absent, with thick lateral walls in younger stages, these becoming thin at maturity. Ascospores muriform, oblong-ellipsoidal to oblong-fusiform, occasionally constricted in the centre, with ±rounded to narrowly rounded ends, initially hyaline, becoming yellowish or pale brownish, distinctly amyloid (especially before pigmentation), 150–260 × 35–50 µm, with numerous locules; locules ±angular, subglobose to irregular; transverse septa thin, distinct, regular; ascospore wall thin, non-halonate; endospore thin. Pycnidia not seen.
CHEMISTRY: Thallus K–, C–, P–; containing convirensic acid (major), hypoprotocetraric acid (major), conprotocetraric acid (trace), 4-O-demethylnotatic acid (trace).
  Known from bark in north-eastern N.S.W., at an altitude of 1100 m. Reported for the first time from Australia; also in Panama.  
  Mangold et al. (2009)  

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

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