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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 subarnoldii (Abbayes) Hale
  Phytologia 28: 339 (1974);
Parmelia subarnoldii Abbayes, Mém. Inst. Sci. Madagascar, sér. B, Biol. Vég. 10: 113 (1961). T: Madagascar, Centrum medium, in silva dicta Marjakatompe, in montibus Ankaratra, 2000 m, [in Marjakatompe forest, 2000m, Ankaratra mountains, middle of Central Madagascar], 30 July 1956, H.R.N. des Abbayes s.n.; isolecto: US, n.v., fide M.E.Hale, Contr. U.S. Natl Herb. 36: 309 (1965).
  Thallus loosely adnate, membranaceous to coriaceous, to 8–12 cm wide. Lobes rounded or irregularly incised, 8–10 mm wide; margins entire or crenate, often ascending; cilia sparse to dense, conspicuous, slender, 3–6 mm long. Upper surface pale grey to grey-green, shiny, emaculate or faintly maculate, often uneven and foveolate, isidia lacking; soralia marginal, linear on broad lobes or terminal on narrow, lateral lobes; soredia farinose. Medulla white, with occasional patches of yellow-orange pigment adjacent to lower cortex. Lower surface black, with a broad, brown or mottled, erhizinate marginal zone; rhizines scattered, mainly simple or rarely branched, long. Apothecia rare, pedicellate, 4–7 mm wide; disc imperforate; thalline exciple dentate-lobulate or sorediate. Ascospores 26–32 × 12–15 µm. Pycnidia rare. Conidia sublageniform, 7–8 × 1 µm. CHEMISTRY: cortex K+ yellow; medulla K-, C-, KC+ red-brown, P+ orange-red; pigmented medulla K+ purple; containing atranorin, chloroatranorin, protocetraric acid (major), skyrin (in pigmented medulla) and protolichesterinic acid.
  A scattered species in Australia, occurring on bark of trees in coastal woodland and hinterland montane forests in Qld; also occurs in southern Africa, Madagascar, Indonesia, Papua New Guinea, Mexico and South America.  
  Elix (1994t)  

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

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