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 | ||
| Thelotrema eungellaense Mangold, Elix & Lumbsch | ||
in A.Mangold, H.T.Lumbsch & J.A.Elix, Biblioth. Lichenol. 95: 463 (2007) T: trail from Broken River Station to rainforest, Eungella Natl Park, Qld, 2003, H.T.Lumbsch & A.Mangold 19108k; holo: CANB; iso: BRI. |
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| Thallus endophloeodal to epiphloeodal, to c. 400 µm thick, pale greyish or yellowish green to olive, dull, smooth, ±verrucose, rimose. True cortex continuous or discontinuous, to c. 50 µm thick, consisting of irregular or periclinal hyphae. Algal layer continuous or not, poorly developed to well developed; calcium oxalate crystals abundant, small to large, scattered or clustered. Vegetative propagules not seen. Ascomata to c. 0.8 mm diam., ±rounded, perithecioid, solitary, immersed to emergent, then verrucose-hemispherical to subglobose. Disc not visible from above. Pores small, to c. 0.15 mm diam., ±rounded, entire, the apex of the proper exciple usually becoming visible from above, forming an inner pore margin that is usually completely free, often slightly sunken, incurved, whitish. Thalline rim margin thick, ±rounded, usually entire, rarely slightly split, usually whitish, occasionally concolorous with the thallus, rarely brownish, level with the thalline rim to ±annulate or funnel-shaped, rarely sunken; thalline rim inconspicuous in immersed ascomata, incurved in emergent ascomata. Proper exciple partly fused to entirely free, thick, hyaline to pale yellowish internally, yellowish grey marginally, occasionally apically brownish, non-amyloid, rarely faintly amyloid at the base. Hymenium to c. 400 µm thick, not inspersed, moderately conglutinated; paraphyses thin, distinctly bent or curly towards the slightly thickened tips, parallel to slightly interwoven, unbranched; lateral paraphyses usually inconspicuous, not conglutinated, to c. 40 µm long; columellar structures absent. Epihymenium hyaline, without granules and crystals. Asci 2–4-spored; tholus initially thick, thin when mature. Ascospores muriform, mostly ellipsoidal to fusiform, rarely slightly bent, with narrowly rounded to subacute ends, hyaline, rarely pale yellowish at late maturity, non-amyloid to faintly amyloid at maturity, 80–180 × 20–40 µm, with numerous locules; locules small, ±rounded to slightly angular, subglobose to ±rounded-cuboidal or irregular; transverse septa thin, distinct throughout development, regular to slightly irregular; ascospore wall thin, non-halonate; endospore thin. Pycnidia not seen. CHEMISTRY: Thallus K+ orange-red, C–, P–; containing norstictic acid (major), connorstictic acid (minor to trace). |
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| An endemic, corticolous species in montane rainforest in eastern Qld, at altitudes of 600–1500 m. | ||
| Mangold et al. (2009) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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