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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
Parmotrema acrotrychum (Kurok.) Streimann
  Biblioth. Lichenol. 22: 92 (1986); Parmelia acrotrycha Kurok., Studies Crypt. Papua New Guinea 126 (1979). T: Kundibesa logging area, 33.7 km E of Kainantu, Eastern Highlands District, Papua New Guinea, S.Kurokawa 6086; holo: TNS.  
  Thallus loosely adnate to adnate, membranaceous to coriaceous, to 5–13 cm wide. Lobes subirregular, 5–10 mm wide, without laciniae; margins entire; cilia apical, 2–5 mm long. Upper surface pale grey, emaculate, smooth, without soredia; isidia cylindrical, becoming coralloid branched, fragile, eciliate. Medulla white. Lower surface black, erhizinate in a broad zone along margins; rhizines sparse, simple, short, brown. Apothecia not seen. Pycnidia uncommon. Conidia not seen. CHEMISTRY: cortex K+ yellow; medulla K-, C-, KC-, P+ orange-red; containing atranorin, chloroatranorin, fumarprotocetraric acid, succinprotocetraric acid and protolichesterinic acid.
  A rare species from montane tropical areas of north Qld; also known from Papua New Guinea. Grows on bark.  
  Elix (1994t)  

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

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