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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 saccatilobum (Taylor) Hale
  Phytologia 28: 339 (1974);
Parmelia saccatiloba Taylor, London J. Bot. 6: 174 (1847). T: Pitcairn Is., Beechey s.n.; lecto: FH-TAYL; isolecto: H, n.v., fide M.E.Hale, Contr. U.S. Natl Herb. 36: 262 (1965). For further synonymy see M.E.Hale, loc. cit. (1965).
  Thallus loosely adnate, coriaceous, to 8–15 cm wide. Lobes rotund, broad, 5–10 mm wide; older lobes broadly convoluted and saccate; margins smooth, entire, eciliate. Upper surface grey to ash-grey, dull, emaculate, becoming reticulately cracked, esorediate; isidia moderately dense, cylindrical, simple to branched, 0.1–0.3 mm high. Medulla white. Lower surface black, erhizinate in a broad zone at margins; rhizines sparse, simple, brown. Apothecia rare, sessile, 5–8 mm wide; disc imperforate; thalline exciple smooth or becoming isidiate. Ascospores 22–26 × 12–16 µm. Pycnidia not seen. CHEMISTRY: cortex K+ yellow; medulla K-, C-, KC+ red-brown, P+ brick-red; containing atranorin, chloroatranorin and protocetraric acid (major).
  A scattered species in Australia, occurring on bark of trees in coastal woodland and hinterland montane forests in N.T. and Qld, and Norfolk Is.; also occurs in India, Taiwan, Singapore, Fiji, the Marshall Is. and Henderson Is.  
  Elix (1994t)  

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

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