ssp. leylandii
Description : Flora (1985: 168–169 – as Erioderma cf. glaucescens (Taylor) C.W.Dodge).
Chemistry : Medulla Pd + yellow-orange; containing pannarin.
N: Northland (Three Kings Is, Ranfurly Bay), Auckland (Waitakere Ra.), South Auckland (near Thames, Waiotapu Valley, Mangaotaki Valley King Country, Te Kauri Reserve Otorohanga, Waimiha Stream) to Wellington. S: Nelson (Inangahua), Westland (Kelly's Creek, Kumara, Lake Kanieri, Fox Glacier, Karangarua River), Canterbury (Boyle River), Otago (Dart Valley). In moist, humid, often successional habitats, along streamsides, in regenerating scrub associations etc., on twigs of Coprosma spp., Dacrycarpus dacrydioides, Kunzea ericoides, Leptospermum scoparium, Olearia spp., Phyllocladus asplenifolius var. alpinus. Associating with the lichens Coccocarpia palmicola, C. erythroxyli, Degelia gayana, D. duplomarginata, Erioderma sorediatum, Fuscoderma applanatum, Leioderma pycnophorum, L. sorediatum, Pannaria fulvescens, Physma chilense. Known also in Queensland and New South Wales, Mexico, Guatemala, Colombia, Ecuador, Bolivia, Peru, Venezuela, Brazil, St Helena, South and East Africa and the islands of the southern Indian Ocean (Keuck 1977; Jørgensen & Galloway 1992b; Marcano et al. 1996; Krog 2000; Jørgensen 2001a, 2003a; Jørgensen & Arvidsson 2002; McCarthy 2003c, 2006).
Austral
Illustrations : Keuck (1977: pl. 190, 192, 193 – as Erioderma chilense, 199 – as Erioderma leylandii); Jørgensen & Galloway (1992b: 254, fig. 91B); Jørgensen & Arvidsson (2002: 100, fig. 9).
Erioderma leylandii is characterised by: the corticolous habit; the spreading, rosette-forming thallus encircling twigs; the tomentose upper surface; the white, felted lower surface with bundles of blue-black rhizohyphae; and the conspicuous, marginal apothecia. This species was previously called E. cf.glaucescens (Taylor) C.W.Dodge, in New Zealand (Galloway 1985a: 168–169). Another subspecies, E. leylandiisspvelligerum (Tuck.) P.M.Jørg., occurs in southern Chile, and has larger spores and a lower surface that becomes distinctly sulphur-yellow or brownish on storage and contains argopsin in place of pannarin (Jørgensen 2001a).
