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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
Sticta variabilis Ach.
  Lichenogr. Universalis 455 (1810); Lobaria variabilis (Ach.) Trevis., Lichenotheca Veneta 75 (1869). T: Réunion, "ad truncos vetustos sylvarum", J.B.G.G.M.Bory de St-Vincent; lecto: PC-THURET, fide D.J.Galloway, Nova Hedwigia 61: 150 (1995).  
  Thallus irregularly spreading, loosely attached centrally, 2–5 (–10) cm wide. Lobes irregularly laciniate, ±dichotomously to complexly branched, often with a central primary lobe which is also grooved-canaliculate, from which many lateral lobes arise, often with proliferating marginal phyllidia, discrete or imbricate at apices, complex-entangled centrally, occasionally lacerate or fenestrate in older parts; margins entire to irregularly divided or ragged, often becoming secondarily lobulate or phyllidiate; apices acute, rounded or furcate. Upper surface pale grey-green or olivaceous when dry, pale to dark olive-green when wet, irregularly shallowly wrinkled to ±plane or undulate, matt or glossy, very crisp and fragile; without isidia, maculae or soredia. Phyllidia marginal, simple to 1–3-branched, 1–3 mm tall. Photobiont green. Lower surface white to pale tan, glabrous from margins to centre, glossy or matt, noticeably costate centrally. Cyphellae frequent, pin-prick-like, 0.1 mm diam., rather plane; pit membrane white. Apothecia not seen.
  A rare species on mossy rocks in montane rainforest in south-eastern Qld and north-eastern N.S.W. Also in East Africa, Réunion, Mauritius, Comoro Is. and Papua New Guinea.  
  Galloway (2001b)  

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

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