Degelia periptera
Synonyms
Pannaria periptera Knight.
Family
Pannariaceae
Flora category
Lichen – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Lichens - Foliose
Current conservation status
2018 | At Risk – Naturally Uncommon | Qualifiers: SO
Brief description
Characterised by the narrow, stellate–radiating or fan-shaped lobes; crowded central apothecia with a pale proper margin bounded by a thick, crenulate–striate thalline margin.
Distribution
Kermadec Islands: (Raoul Island). North Island: Northland (Three Kings Islands, Radar Bush, Rakitu Island), Auckland (Rangitoto Island), South Auckland (Great Mercury Island, Red Mercury Island, Hunua Ranges).
Also known from a single collection in New South Wales.
Habitat
Mainly coastal on trees and shrubs. Often on bark of Metrosideros excelsa and commonly associating with the lichens Coccocarpia erythroxyli, Leioderma pycnophorum, Pannaria elixii, Crocodia aurata and Usnea rubicunda.
Detailed description
Thallus foliose lobate, ± rosette-forming, closely attached, to 23 cm diam., corticolous. Lobes narrow, contiguous at margins, imbricate, coalescing centrally, ± stellate-radiating or fan-shaped. Upper surface dull plumbeous-grey, smooth to uneven, faintly maculate (×10 lens), often with granular lobules. Apothecia sessile, rounded, 0.2-1 mm diam., disc red-brown, waxy or matt, flat, with a pale proper margin, bounded by a thick, crenulate-striate thalline margin. Ascospores ellipsoid, 11-13 × 5-8 µm.
Chemistry: TLC−, all reactions negative.
Substrate
Corticolous
Attribution
Fact sheet prepared by Marley Ford (8 Septemebr 2021). Brief description, Distribution, Habitat, and Features sections copied from Galloway (1985) & 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