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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
Lobaria scrobiculata (Scop.) DC.
  in J.B.A.P. de M. de Lamarck & A.P. de Candolle, Fl. Franç., 3rd edn, 2: 402 (1805); Lichen scrobiculatus Scop., Fl. Carniol. 2nd edn, 2: 384 (1772). T: Europe, Dillenius no. 113; lecto: OXF n.v., fide I.Yoshimura, J. Hattori Bot. Lab. 34: 303 (1971).  
  Thallus loosely adnate, 10–16 cm wide. Lobes rounded, imbricate, 10–20 mm wide; apices rotund; margins entire or slightly crenulate, ascending or not, ±developing broad lacinae. Upper surface dark blue-green or grey-blue when wet, pale yellow-green to olive-brown when dry, dull or glossy, undulate, coarsely reticulate-areolate but without defined interconnecting ridges, lacking phyllidia and isidia, sorediate (lobes ±thickened in the sorediate parts); soralia laminal and marginal, punctiform at first, but eroding with age, becoming brownish, roughened and areolate at the margins; soredia granular. Photobiont a cyanobacterium (blue-green). Lower surface white, uneven or ±wrinkled-bullate, not distinctly veined but with glabrous whitish roughened patches separated by pale brown to dark brown silky entangled tomentum, erhizinate or with very sparse simple rhizines. Apothecia very rare, 1–2 mm wide; disc concave, red-brown; thalline exciple verruculose, ±sorediate; margin inflexed, smooth and undulate. Ascospores acicular, 3–7-septate, 60–65 × 4–5 µm, colourless. Pycnidia not seen. CHEMISTRY: Cortex K–; medulla K+ orange-red, C+ rose, P+ orange; containing usnic acid (minor), stictic acid (major), scrobiculin (major), constictic acid (minor), norstictic acid (minor) and cryptostictic acid (trace).
  Scattered in forests and open woodland in the ranges of temperate south-eastern Australia (N.S.W., A.C.T., Vic. and Tas.); usually grows on bark and more rarely on rocks. A cosmopolitan species, also known from Europe, Asia, North America, Japan and New Zealand.  
  Elix (2001a)  

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

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