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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
Relicina circumnodata (Nyl.) Hale
  Phytologia 28: 484 (1974)
Parmelia circumnodata Nyl. in W.Nylander & J.M.M.Crombie, J. Linn. Soc., Bot. 20: 51 (1883). T: Government Hill, Penang, Malaya [Malaysia], A.C.Maingay 22; lecto: BM; isolecto: FH, H, fide M.E.Hale, Smithsonian Contr. Bot. 26: 20 (1975).
  Thallus foliose, adnate, to 8 cm wide. Lobes not imbricate, contiguous and sublinear to separate and linear-elongate, dichotomously or subdichotomously branched, 0.7–2 mm wide, elobulate; cilia dense, conspicuous, strongly inflated, to 2 mm long, often developing agglutinated hyphae towards cilia apices. Upper surface pale yellow-green to yellow-brown, flat to convex, shiny, smooth, emaculate or weakly maculate; isidia sparse, cylindrical, simple, short (to 0.5 mm high). Lower surface pale tan; rhizines dimorphous; coarse long rhizines scattered, pale brown; fine short rhizines developing from coarse rhizines and lower surface, dense, richly branched, agglutinated, pale tan. Apothecia rare, 1–2 mm wide; disc shallowly concave, cinnamon-brown to dark brown; thalline exciple coronate, smooth, erhizinate. Ascospores bicornute, 10–12 × 3 µm. Pycnidia not seen. CHEMISTRY: cortex K-, UV-; medulla K- or K+ pale brown, C-, KC-, P+ brick red; containing usnic acid and protocetraric acid.
  Scattered on the bark of mangroves, coastal and hinterland trees in north Qld; also occurs in West Malaysia, Sarawak, and the Philippines.  
  Elix (1994v)  

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

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