Leioderma duplicatum
Synonyms
Parmeliella duplicata, Pannaria rubiginosa ssp. prolifera, Pannaria rubiginosa var. prolifera
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, subcanaliculate, marginally reddish-brown glabrous lobes; marginal to laminal phyllidia; and prominent development of rhizohyphae on the lower surface, often appearing like a prothallus.
Distribution
North Island: Northland (Radar Bush, Te Paki Bush, Herekino Forest, Wairau Valley, Waipoua State Forest, Kawerua, Little Barrier Island, Great Barrier Island), Auckland (Piha, Waitakere Ranges), South Auckland (Great Mercury Island, Te Kauri Scenic Reserve near Otorohanga).
Known also from Australia (New South Wales and Tasmania), New Caledonia and Norfolk Island.
Habitat
In lowland areas of high humidity and elevated summer temperatures, from s.l. to 920 m.
A corticolous species growing among bryophytes and other cyanophilic lichens (species of Coccocarpia, Erioderma, Leioderma, Pannaria, Parmeliella and Leptogidium) on the phorophytes Kunzea and Leptospermum scoparium agg.
Detailed description
Thallus forming rosettes to 5 cm wide. Lobes ±concave, subcanaliculate towards margins, 1–3(–5) mm wide, linear–laciniate. Margins raised, slightly thickened, sinuous, sometimes frosted–pruinose, phyllidiate. Phyllidia peltate–squamulose, rarely digitate, sometimes spreading onto upper surface and occasionally forming a thick, diffract, marginal crust. Upper surface markedy uneven but often glossy, and with conspicuous pale-brown apothecial initials, glaucous–olivaceous when wet, suffused red-brown at margins. Lower surface white at margins, brownish centrally, with densely clustered fascicles of silky, white to blue-black rhizohyphae, normally projecting beyond lobe margins. Apothecia rare, 0.1–1.5 mm diam., disc concave becoming plane, matt, epruinose, pale to dark red-brown with persistent paler, entire to shallowly sinuous proper exciple, slightly raised above disc. Hymenium I+ persistent blue. Ascospores 12–20 × 6–10 μm.
Chemistry: TLC−, all reactions negative.
Substrate
Corticolous, occasionally saxicolous
Attribution
Fact sheet prepared by Marley Ford (18 December 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.