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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 rimulosum (C.W.Dodge) Hale
  Phytologia 28: 338 (1974);
Parmelia rimulosa C.W.Dodge, Ann. Missouri Bot. Gard. 46: 133 (1959). T: Table Mountain, South Africa, J.Macgillivray s.n.; holo: BM.
  Thallus loosely adnate, membranaceous, to 8–15 cm wide. Lobes becoming crowded, imbricate or slightly convolute, rounded, 5–15 mm wide; margins entire or weakly crenate; cilia mainly on lateral lobes, sparse to moderately dense, conspicuous, slender, 1–3 mm long. Upper surface pale grey to grey-green, emaculate, smooth at first, without isidia; cortex fragile, cracking with age and flaking; soralia laminal, mainly submarginal, pustular, producing granular soredia and corticate granules. Medulla white, sometimes orange-red near lower cortex, turning dark grey where cortex has sloughed off. Lower surface black, with a broad, brown to mottled tan, erhizinate marginal zone; rhizines scattered, simple, long, slender. Apothecia rare, pedicellate, 8–15 mm wide; disc perforate; thalline exciple rugose, maculate. Ascospores 20–22 × 10–13 µm. Pycnidia rare. Conidia filiform, 8–10 × 1 µm. CHEMISTRY: cortex K+ yellow; medulla K-, C-, KC+ red, P-; pigmented medulla K+ purple; containing atranorin, chloroatranorin, alectoronic acid, a-collatolic acid and skyrin.
  A rare species growing on bark of trees in coastal and hinterland forests of Qld and N.S.W.; also known from eastern and southern Africa.  
  Elix (1994t)  

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

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