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 subpatens (Hale) Mangold | ||
in A.Mangold, J.A.Elix & H.T.Lumbsch, Fl. Australia 57: 654 (2009) Thelotrema subpatens Hale, Bull. Brit. Mus. (Nat. Hist.), Bot. 8: 269 (1981). T: Galle, Southern Province, Sri Lanka, M.E.Hale 46208; holo: US; iso: BM. |
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| Thallus mainly endophloeodal, to c. 50 µm thick, pale greyish, dull to slightly glossy, smooth, continuous, usually non-rimose. True cortex lacking; protocortex discontinuous, to c. 10 µm thick. Algal layer poorly developed, discontinuous; calcium oxalate crystals absent. Vegetative propagules not seen. Ascomata inconspicuous, to c. 1.5 mm diam., ±rounded to slightly irregular (especially in fused ascomata), apothecioid, becoming chroodiscoid, erumpent, solitary or fused, immersed. Disc partly to rarely completely visible from above, pale brownish to greyish brown, becoming slightly pruinose. Proper exciple often visible from above, usually appearing free, but always fused with substratum/thalline rim layers, whitish; thalline rim margin irregular, ragged and lobed; lobes large and thin, occasionally eroded, often appearing layered due to the exfoliating substratum, concolorous with the thallus or brownish due to substratum layers, becoming erect to recurved. Proper exciple hyaline internally to pale yellowish marginally, often incorporating substratum layers, apically usually covered by greyish granules, often slightly amyloid (I+ reddish) to strongly amyloid at the base (I+ purple). Hymenium to c. 80 µm thick, weakly conglutinated; paraphyses straight to slightly bent, parallel, the tips unthickened to slightly thickened; lateral paraphyses inconspicuous in immature ascomata, to c. 20 µm long, not clearly separated from the exciple. Epihymenium brownish, with fine or coarse greyish brown granules. Asci 6–8-spored; tholus thin, usually not visible at maturity. Ascospores transversely septate, mostly ellipsoidal to oblong-fusiform, rarely fusiform, with ±rounded to narrowly rounded ends, hyaline, strongly amyloid, 20–30 × 6–7 µm, with 7–10 locules; locules ±rounded to slightly angular, mostly subglobose to oblong; end cells hemispherical to conical; septa thick, regular; ascospore wall thick, often distinctly crenulate, non-halonate; endospore thick. CHEMISTRY: Thallus K–, C–, P–; no compounds detectable by TLC. |
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| Known from a single collection from tree bark in cool-temperate, Nothofagus forest in Tas. (altitude 800 m); also in Sri Lanka. | ||
| Mangold et al. (2009) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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