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 asteliae (Kantvilas & Vězda) Mangold | ||
in A.Mangold, J.A.Elix & H.T.Lumbsch, Fl. Australia 57: 653 (2009) Chroodiscus asteliae Kantvilas & Vězda, Lichenologist 32: 328 (2000). T: southern foothills of Mt Curly, Tas., alt. 900 m, 3 Feb. 1985; G.Kantvilas & S.J.Jarman 38/85; holo: HO n.v.; iso: Herb. Vězda n.v., BM. |
||
| Thallus immersed to superficial, to c. 200 µm thick, pale grey to pale tan-grey, slightly glossy, smooth, continuous to slightly verrucose, non-rimose. True cortex ±continuous, to c. 30 µm thick, composed of periclinal hyphae. Algal layer ±continuous, poorly developed; calcium oxalate crystals absent. Vegetative propagules not seen. Ascomata conspicuous, to c. 1.5 mm diam., ±rounded, apothecioid or becoming indistinctly chroodiscoid, initially erumpent, becoming sessile, solitary to marginally fused, regenerating, becoming markedly emergent, depressed-subglobose to urceolate. Disc usually partly visible from above, pale brownish, becoming dark grey, epruinose. Proper exciple usually not visible from above, sometimes becoming visible apically as a brownish line; thalline rim margin small to gaping, irregular to stellate; thalline rim becoming distinctly layered, radially split and ±lobed, concolorous with the thallus or slightly darker, internally incurved to, rarely, slightly erect; outer layers becoming erect, rarely recurved. Proper exciple usually fused, rarely apically exposed, thin, hyaline internally to pale brownish or greyish marginally, sometimes dark brown apically, non-amyloid. Hymenium to c. 150 µm thick, moderately conglutinated; paraphyses thick, ±parallel, with swollen tips; lateral paraphyses inconspicuous, to 30 µm long. Hypothecium conspicuous and thick, hyaline, strongly gelatinous and slightly amyloid. Epihymenium hyaline, becoming distinctly brownish, rarely with a few greyish granules. Asci 4–6 (–8)-spored; tholus initially thin, not visible at maturity. Ascospores submuriform to muriform, oblong to ±fusiform, with rounded to narrowly rounded ends, hyaline, weakly amyloid, 30–60 × 10–15 µm, with 8–16 × 1–4 locules; locules large, mostly irregular-rounded to somewhat angular, subglobose or often elongate; transverse septa thick, ±regular; ascospore wall and endospore thick, with a thin to thick halo. CHEMISTRY: Thallus K+ yellowish brown, C–, P+ orange-red; containing succinprotocetraric acid (major), protocetraric acid (trace), fumarprotocetraric acid (trace). |
||
| Locally common on dead leaves of Astelia alpina in subalpine to alpine heathland in western Tas. (900–1080 m); endemic. | ||
| Mangold et al. (2009) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from Australian Biological Resources Study. Requests and inquiries concerning reproduction and rights should be addressed in the first instance to Dr P. McCarthy. These pages may not be displayed on, or downloaded to, any other server without the express permission of ABRS.