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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
Belonia uncinata P.M.McCarthy & Kantvilas
  T: Tasmania, Gordon Road, c. 2 km N of Frodshams Pass (Site EW23), 42°48'S, 146°24'E, alt. 600 m, on bark of Cyathodes juniperina, 8 April 1997, G. Kantvilas 96/97; holo: HO 320762.  
  Thallus crustose, epiphloeodal, effuse to determinate, continuous to sparingly rimose, pale grey-green to pale green, rarely medium green, faintly orange-pink-tinged when fresh, smooth or uneven and subgranular, matt, 20–60 µm thick, ecorticate. Algae Trentepohlia-like; cells broadly ellipsoidal to globose, 6–16 × 5–11 µm; interstitial mycobiont cells 2–3 µm wide. Prothallus not apparent.  Ascomata closed apothecia, resembling perithecia, mostly subglobose, very numerous, solitary (rarely paired or in clusters of 3 or 4), semi-immersed to almost superficial (but lower levels often overgrown by the thallus), (0.17–)0.24(–0.35) mm diam.; surface smooth to minutely uneven. Apex usually plane to slightly convex, occasionally with a broad, shallow depression. "Ostiole" usually inconspicuous, rarely gaping. Excipulum prosoplectenchymatous, 50–80 µm thick near the ascomatal apex, 20–30 µm thick at the base, occasionally uniformly hyaline to pale yellowish green and translucent when wet, more commonly with a medium to dark brown or blackish, 10–15 µm thick outer layer, internally hyaline to pale yellowish green. Hymenium IKI+ bluish green, but almost instantaneously turning reddish brown. Subhymenium 20–30 µm deep at the base, containing a yellowish orange oily substance. Paraphyses simple, long-celled, 1–1.5 µm thick; apices not swollen. Asci 8-spored, elongate-clavate, less commonly elongate-cylindrical, uniformly thin-walled, without an apical apparatus, 80–110 × 10–13 µm; apex rounded; dehiscence not observed. Ascospores hyaline, filiform, straight or curved, distinctly hooked towards their rounded or subacute apices, in a single fascicle in the ascus, (11–)15(–21)-septate, (50–)70(–90) × (2.5–)3.5(–4.5) µm (100 measured); cells similar or of unequal size, usually slightly constricted at the septa; contents granular and/or guttulate; perispore lacking. Conidiomata not seen.
  An epiphyte in the shady understorey of wet forests, and is known in Tas. from two widely separated biogeographic regions: Eucalyptus nitida forest in south-western Tas., and E. globulus forest on the east coast. Also in Argentina.  
  McCarthy & Kantvilas (1997)  

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

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