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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
Pannaria durietzii (P.James & Henssen) Elvebakk & D.J.Galloway
  Australas. Lichenol. 53: 6 (2003)
Psoroma durietzii P.James & Henssen, Lichenologist 7: 143 (1975). T: South Hokitika Experimental Station, Westland, South Is., N.Z., G.E. & G. Du Rietz 1570c; holo: OTA.
  Thallus foliose-lobate, rosette-forming to irregularly spreading, usually 2–3 cm wide, closely attached, with a blue-black, cottony prothallus extending beyond lobe margins. Lobes irregularly divided, larger and radiating at margins, 2–3.5 mm wide, usually contiguous but sometimes remaining widely separated. Upper surface flat or concave, shining, smooth or rarely scabrid, lettuce green when wet, yellowish or golden-brown when dry. Lower surface ochraceous; rhizines blue-black to black, simple, in a ±uniform felt to margins. Cephalodia frequent, laminal, originating at margins, to 1 mm wide, at first ±suborbicular, flattened, often becoming unequally lobed, pale brown, yellowish flesh-coloured or concolorous with thallus at first, with numerous blue-grey, granular soredia on underside and at margins, finally spreading to upper surface, conspicuously dark grey-blue when wet. Apothecia rare, when present abundant, crowded, ±central, variously contorted-angular, 0.5–1.5 mm wide, rounded, sessile, ±cupuliform, constricted at base; disc ±white-pruinose, often with faint, pale concentric lines, often fissured, pale pink to red-brown; thalline exciple well-developed, involute or radially crenate, often ±fissured. Ascospores ovoid or subglobose, 12–15 × 10–13 µm; episporium roughened or irregularly ridged, 2–2.5 µm thick. CHEMISTRY: medulla K± yellow, C-, KC ±yellow, P ±red. Pannarin, zeorin and two unidentified pigments.
  Occurs in N.S.W., Vic. and Tas. as an epiphyte of twigs and bark of rainforest trees and shrubs, occurring occasionally also on quartzite outcrops and in subalpine heath-woodland. Altitudinal range 100–1200 m. It occurs also in New Zealand and southern Chile.  
  Jørgensen & Galloway (1992a)  

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

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