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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
Menegazzia inactiva P.James & Kantvilas
  Lichenologist 19: 25 (1987)
T: Sumac Rd Spur 2, S of Arthur R., NW Tas., 24 Nov. 1980, G.Kantvilas 674/80; holo: HO; iso: BM.
  Thallus appressed but ascending towards lobe ends, irregularly spreading, 4–7 cm wide. Lobes 1.5–3 mm wide, fragile, elongate, partly subdichotomously branched, often with toe-like secondary lobes, frequently overlapping throughout, very inflated, convex to tubular in part, very pale grey to ivory, semi-pellucid when wet. Upper surface smooth or faintly rugose, rumpled; lobe ends concolorous. Lower surface jet black, shiny, not spreading laterally or onto upper surface. Cavity white, finely tomentose. Perfor­ations frequent, rounded or oval, to 1 mm wide; margin often elevated, lacerate, occas­ionally with a collar. Soralia numerous, terminal or subterminal, on ragged, recurved, flange-like extensions of perforation margins, or as small inflated vesicles, towards lobe ends, soon disintegrating to expose soralia and ragged proliferating margins. Soredia powdery, granular, concolorous with upper surface. Apothecia and pycnidia unknown. CHEMISTRY: cortex K+ yellow (atranorin); medulla P-, K-, KC- C-, UV- (four fatty acids ?belonging to murolic acid complex).
  On bark; a very rare species on twigs and smooth-barked branches of trees in mature 'mixed' forests with broken canopies, Tas.; also in New Zealand.  
  James & Galloway (1992)  

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

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