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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
Topeliopsis azorica (P.James & Purvis) Coppins & Aptroot,

Lichenologist 40: 372 (2008)

Ramonia azorica P.James & Purvis, Arquipelago 11A: 11 (1993).

T: Faial, Azores, 14 Apr. 1992, O.W.Purvis & P.W.James s.n.; holo: AZ n.v.; iso: BM.

  Thallus immersed to superficial, to 50 µm thick near the ascomata, greyish to greenish or yellowish grey, dull to slightly glossy, smooth to rough, continuous, coarsely pruinose, continuous to sparingly rimose, often appearing distinctly fissured to areolate due to the substratum. Protocortex discontinuous, to 25 µm thick, this rarely becoming conglutinated and forming a true cortex of irregular to periclinal hyphae. Algal layer usually discontinuous and poorly developed, occasionally patchily more well defined; calcium oxalate crystals not seen. Vegetative propagules not seen. Ascomata conspicuous or not, to c. 0.8 mm diam., ±rounded, perithecioid when young, becoming apothecioid, sessile to somewhat erumpent, solitary to marginally fused, depressed-subglobular to depressed-urceolate, hemispherical. Disc not visible from above, rarely becoming partly visible, pale flesh-coloured, epruinose to slightly pruinose. Pores small to moderately broad, to c. 0.3 mm diam., irregular, rarely distinctly stellate; pore margin split; proper exciple not visible from above. Thalline rim apically pruinose, off-white, in semi-emergent ascomata also concolorous with the thallus, ±exfoliating, incurved to slightly erect near the pore, erect to recurved and lobed towards the margin; rim margin coarsely cracked to lacerate. Proper exciple fused, thick, hyaline internally, pale yellow to pale yellowish brown marginally, slightly to distinctly amyloid in internal parts and subhymenium. Hymenium to c. 180 µm thick, moderately conglutinated; paraphyses parallel, with unthickened tips; lateral paraphyses conspicuous, to c. 30 µm long. Epihymenium hyaline, sometimes with minute sparse calcium oxalate crystals. Asci 1 (–2)-spored; tholus thin. Ascospores muriform, usually cylindrical, rarely ±rounded-fusiform to ±rounded-bifusiform or reniform, with rounded to narrowly rounded ends, hyaline, distinctly amyloid, at maturity opaque-amyloid, 70–160 × 15–45 µm, with numerous locules; locules large, ±rounded to somewhat angular, rounded-cuboid or irregular; transverse septa thin but distinct, regular; ascospore wall thick, with a thin halo when immature; endospore thin; ascospore wall and endospore persistently non-amyloid.
CHEMISTRY: Thallus K–, C–, P–; no secondary compounds detectable by TLC.
  Very rare on siliceous rocks in a warm-temperate rainforest in south-eastern N.S.W. Reported for the first time from Australia; also in the Azores and Scotland.  
  Mangold et al. (2009)  

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

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