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Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Ocellularia bahiana (Ach.) Frisch

in A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 503 (2006)

Thelotrema lepadinum var. bahianum Ach., Methodus 132 (1803); — Thelotrema bahianum (Ach.) Ach., Kongl. Vetensk. Acad. Nya Handl. 33: 87 (1812); — Thelotrema lepadinum var. bahianum (Ach.) Lam., Encycl. Meth. Bot. Suppl. 3: 409 (1813), nom. superfl.; — Leptotrema bahianum (Ach.) Müll.Arg., Mém. Soc. Phys. Genève 29(8): 12 (1887); — Myriotrema bahianum (Ach.) Hale, Mycotaxon 11: 132 (1980).

T: Bahia, Brazil, coll. unknown; lecto: H-ACH 743, fide A.Frisch, K.Kalb & M.Grube, Biblioth. Lichenol. 92: 504 (2006).

Myriotrema permaculatum Nagarkar & Hale, Mycotaxon 35: 439 (1989). T: Philippines, M.E.Hale 24937; holo: US.

  Thallus epiphloeodal, occasionally bulging and flaking away from the substratum, to c. 1.2 mm thick, pale yellowish to greenish grey, ±glossy, smooth, distinctly verrucose to verruculose, non-rimose. True cortex continuous or discontinuous, to c. 20 µm thick, formed by periclinal hyphae. Algal layer well developed, continuous; calcium oxalate crystals abundant, moderately large to large, scattered or clustered. Vegetative propagules not seen. Ascomata ±conspicuous, to c. 1 mm diam., ±rounded to slightly irregular (especially fused ascomata), perithecioid, solitary to ±fused, often clustered, moderately to usually strongly emergent, verrucose-urceolate to subglobose, rarely hemispherical. Disc and proper exciple not visible from above. Thalline rim margin to 0.2 mm diam., ±rounded, entire, thick, often depressed or ±annulate, concolorous with the thallus or brighter, sometimes brownish; thalline rim incurved. Proper exciple fused, thick, pale yellowish to yellowish brown internally, orange to reddish brown or brownish marginally, often dark brown to slightly carbonised apically, distinctly prosoplectenchymatous, non-amyloid. Hymenium to c. 250 µm thick, not inspersed, strongly conglutinated; paraphyses ±bent, curly towards the moderately thickened tips, ±interwoven, unbranched; columellar structures not seen. Epihymenium hyaline, without granules. Asci 8-spored; tholus absent; lateral walls initially thick, becoming thin. Ascospores submuriform, subglobose to ovoid, rarely ellipsoidal or slightly oblong, with ±rounded ends, brown at maturity, strongly amyloid, 15–30 × 8–23 µm, with 2–4 × 1–4 locules; locules ±rounded, rarely angular, subglobose to oblong or irregular; immature ascospores with 1 or 2 more distinct ±regular thin central septa, otherwise with irregular and indistinct septation; ascospore wall thick, moderately thinly halonate; endospore thin. Pycnidia not seen.
CHEMISTRY: Thallus K+ yellowish brown, C–, P+ orange-red; containing protocetraric acid (major), virensic acid (trace).
  Rareon bark in lowland rainforest and mangroves in north-eastern Qld; pantropical.  
  Mangold et al. (2009)  

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

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