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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 grayanum (Hue) Hale
  Phytologia 28: 336 (1974);
Parmelia grayana Hue, Nouv. Arch. Mus. Hist. Nat., sér. 4, 1: 184 (1899). T: in Coonoor in montibus Nilgherrensibus [Coonoor, Nilgiri Hills, Tamil Nadu], India, 1893, A.Gray s.n.; holo: PC, n.v., fide M.E.Hale, Contr. U.S. Natl Herb. 36: 292 (1965).
  Thallus adnate, coriaceous, to 3–6 cm wide. Lobes rounded, 4–8 mm wide; margins ascending, crenate; cilia sparse to moderately dense, conspicuous, 0.5–1.5 mm long. Upper surface pale grey, emaculate, smooth, often pruinose, lacking isidia; soralia marginal and submarginal; soredia often with a grey-brown tinge. Medulla white. Lower surface black, with a broad, brown, erhizinate marginal zone; rhizines sparse, simple, coarse. Apothecia rare, sessile, 2–4 mm wide; disc perforate; thalline exciple becoming sorediate. Ascospores 12–16 × 5–8 µm. Pycnidia common. Conidia sublageniform to bacilliform, 8–10 × 1 µm. CHEMISTRY: cortex K+ yellow; medulla K-, C-, KC-, P-, containing atranorin, chloroatranorin, protolichesterinic acid and unidentified fatty acids.
  A scattered species on rock in W.A., Qld and N.S.W. Also known from Africa, New Zealand, Japan, North America, India and the Canary Is.  
  Elix (1994t)  

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

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