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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
Chapsa lamellifera (Kantvilas & Vězda) Mangold

in A.Mangold, J.A.Elix & H.T.Lumbsch, Fl. Australia 57: 653 (2009)

Chroodiscus lamelliferus Kantvilas & Vězda, Lichenologist 32: 336 (2000).

T: Ben Ridge, E of Ben Nevis, Tas., alt. 750 m, on Leptospermum lanigerum in rainforest, 17 Feb. 1981, G.Kantvilas 105/81; holo: HO; iso: Herb. Vězda.

  Thallus endophloeodal to epiphloeodal, to c. 100 µm thick, greyish green to pale grey, dull to slightly glossy, smooth, continuous, non-rimose. Protocortex discontinuous, to c. 20 µm thick. Algal layer ±continuous, moderately well developed; calcium oxalate crystals small, sparse, scattered. Vegetative propagules not seen. Ascomata conspicuous, to c. 3 mm diam., mostly ±rounded, chroodiscoid at maturity, initially erumpent, later sessile, solitary or fused, becoming ±distinctly emergent, mostly depressed-urceolate. Disc partly to rarely completely visible from above, greyish brown to flesh-coloured, indistinctly pruinose. Proper exciple not visible from above; thalline rim ±regularly radially split, lobed, becoming strongly layered, off-white to pale reddish brown; inner layers mostly incurved, often gradually exfoliating, becoming erect to recurved towards the outer layers. Proper exciple fused, thin to somewhat evanescent, hyaline internally to pale brownish marginally, non-amyloid. Hymenium to c. 180 µm thick, strongly conglutinated; paraphyses straight to slightly bent, parallel, the tips unthickened to slightly thickened; lateral paraphyses mostly inconspicuous, to c. 25 µm long. Epihymenium hyaline, with greyish brown granules. Asci 8-spored; tholus absent. Ascospores muriform, oblong or ellipsoidal to reniform, with rounded to narrowly rounded ends, hyaline or becoming slightly yellowish, non-amyloid, 30–60 × 10–20 µm, with 12–18 × 2–5 locules; locules small, ±rounded to angular, irregular; transverse septa only distinct in immature ascospores, irregular, disappearing with age; ascospore wall thin, thinly halonate.
CHEMISTRY: Thallus K+ yellowish, C–, P+ reddish; containing protocetraric acid (major to minor), fumarprotocetraric acid (major to minor), succinprotocetraric acid (minor).
  Common on tree bark and dead wood, rarely on soil, plant debris or moss, in moist, cool-temperate rainforest in Tas., at altitudes to 900 m; also in New Zealand.  
  Mangold et al. (2009)  

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

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