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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 retigera (Bory) Trevis. var. retigera
  Lichenotheca Veneta 75 (1896); Lichen retiger Bory, Voy. Quatr. Îles d'Afrique 1: 391 (1804). T: Île Bourbon [Réunion], J.B.G.G.M.Bory de St-Vincent; holo: M n.v. For additional synonymy see Yoshimura (1971).  
  Thallus adnate centrally, ±free at the margins, 8–12 cm wide. Lobes sublinear, irregularly to dichotomously branched, 3–6 mm wide; apices subrotund; margins entire, subascending. Upper surface brownish black when wet, olive-brown to tan when dry, dull, distinctly reticulate-faveolate, with conspicuous interconnecting ridges, lacking soredia and phyllidia; isidia sparse to moderately dense, erect, cylindrical, fragile, becoming coralloid-branched, to 0.6 mm tall, mainly on reticulate ridges. Photobiont a cyanobacterium (blue-green). Lower surface pale brown with bullate glabrous areas separated by a network of blue-black tomentum, sparsely to densely rhizinate centrally; rhizines simple or squarrosely branched, dark brown. Apothecia and pycnidia not seen in Australian material. CHEMISTRY: Cortex K–; medulla K–, C–, KC–, P–; containing retigeranic acid A (minor), retigeranic acid B (major), retigeranic acid C (minor), retigeranic acid D (trace), thelephoric acid (in dark tomentum), without stictic acid.
  Scattered in coastal and hinterland forests of eastern Australia (Qld and N.S.W.); grows on bark and more rarely on moist rocks. This tropical and subtropical lichen also occurs in Africa, Papua New Guinea and New Zealand.  
  Elix (2001a)  

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

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