Pannaria durietzii
Synonyms
Psoroma durietzii
Family
Pannariaceae
Flora category
Lichen – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Lichens - Foliose
Current conservation status
2018 | Not Threatened | Qualifiers: SO
Brief description
Characterised by the corticolous habit; the long, marginal lobes; very characteristic, placodioid to subfoliose cephalodia developing numerous bluish soralia; and a secondary chemistry dominated by pannarin. It has a green alga as its major photobiont.
Distribution
North Island: Wellington (Kaimanawa Ranges, Ruahine Ranges, Tararua Ranges, Rimutaka Ranges). South Island: Nelson (St Arnaud Range, West Bay, Lake Rotoiti), Westland (Stillwater, Haast), Canterbury (Lewis Pass, Arthur’s Pass, Governor’s Bush), Otago (Haast Pass, Lake Hawea, Olivine Valley, Routeburn Valley), Southland (Milford Sound, Cascade Cove, Dusky Sound, Lake Te Anau, Lake Manapouri, Wilmot Pass). Stewart Island: (Butterfield’s Beach, Glory Cove, Port Pegasus). Auckland Islands: (Laurie Harbour, Ranui Cove, Terror Cove, Rose Island, Ewing Island, Enderby Island). Campbell Island: (Mt Lyall, Mt Dumas, Mt Honey).
Known also from SE Australia, Tasmania, and southern Chile.
Habitat
On Dacrycarpus, Kunzea, Lepotospermum, Fuscospora, Phyllocladus and several other tree and shrub species in high-humidity habitats, s.l. to 1000 m.
Detailed description
Thallus foliose-lobate, rosette-forming to irregularly spreading, 2-3(-5) cm diam., closely attached, with a blue-black, byssoid prothallus extending beyond lobe margins. Lobes irregularly divided, larger and radiating at margins, 2.0-3.5 mm wide, smaller and ± imbricate centrally, usually contiguous for most of their length but sometimes remaining discrete and widely separated on prothallus. Upper surface plane or concave, shining, smooth or rarely slightly roughened, bright lettuce-green when wet, yellowish or golden-brown when dry. Cephalodia frequent, laminal, originating at margins, to 1 mm diam., at first ± suborbicular, flattened, often becoming unequally lobed with indented margins, 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. Lower surface pale ochraceous, ± densely rhizinate. Rhizines blue-black to black, simple, in a ± uniform felt to the margins. Apothecia rare, when present abundant, crowded, ± central, variously contorted-angular through mutual pressure, 0.5-1.5 mm diam., globose, sessile, ± cupuliform, constricted at base, disc pale pink to red-brown, ± white-pruinose, often with faint, pale concentric lines, often fissured, thalline margin well-developed, involute or radially crenate, often ± fissured. Ascospores oval or rounded 12-15 × 10-13 µm, epispore roughened or irregularly ridged 2.0-2.5 µm thick.
Chemistry: Medulla K+ yellow, C-, KC+ yellow, Pd+ red. Pannarin, zeorin and two unidentified pigments.
Substrate
Corticolous
Attribution
Fact sheet prepared by Marley Ford (17 May 2021). Information in the Brief description, Distribution, Habitat, Features and Similar taxa sections copied from Galloway (2007).
References and further reading
Galloway D.J. 1985: Flora of New Zealand: Lichens. Wellington: PD Hasselberg, Government Printer. 662 pp.
Galloway D.J. 2007: Flora of New Zealand: Lichens, including lichen-forming and lichenicolous fungi. 2nd edition. Lincoln, Manaaki Whenua Press. 2261 pp.