Flora of New Zealand Series

Holotype: New Zealand. Three Kings Is, Great I., south side of Tasman Valley on Kunzea ericoides scrub, 21.xi.1970, D.J. Galloway s.n. – CHR 381094.

Description : Flora (1985: 169).

Chemistry : Medulla Pd+ yellow-orange; containing eriodermin (Huneck & Yoshimura 1996).

N: Northland (Three Kings Is, Radar Bush, Te Huka, Waipoua Forest, Kawerua, Waitangi, Tangihau Forest, Bay of Is, Mt Auckland, Whangarei, Tutukaka, Tapu Bush N. Kaipara, Lady Alice I., Little Barrier I., Great Barrier I.), Auckland (Waitakere Ra., Rangitoto I.), South Auckland (Hunua Ra., Mt Maungatawhiri Coromandel Peninsula, Motuhora I., Rotorua, Mangaotaki Valley King Country, Te Kauri Scenic Reserve Otorohanga), Wellington (Whariti Peak Ruahine Ra., Rimutaka Ra.). S: Nelson (Lake Rotoiti, Lake Rotoroa, Maruia River), Westland (Lake Kaniere, Whataroa River), Canterbury (Nina Valley, Boyle River), Otago (Chinaman Flat Dart Valley, Routeburn). In moist, humid habitats, similar to those for E. leylandii. Known from the following phorophytes: Agathis australis, Knightia excelsa, Kunzea ericoides, Olearia furfuracea, Myrsine australis, Nothofagus solandri var. cliffortioides, Phyllocladus trichomanoides, Weinmannia racemosa, rarely on twigs of Pinus insignis (Mt Tutamoe). Widespread but scattered in the palaeotropics, East Africa (Swinscow & Krog 1988; Krog 2000; Jørgensen 2003a), India, St Helena, SE Asia (Wolseley et al. 2002; Jørgensen & Sipman 2002b), Polynesia, Queensland, New South Wales and Tasmania (Jørgensen & Galloway 1992b: 255; Jørgensen & Arvidsson 2001a; McCarthy 2003c, 2006), Alaska (Geiser et al. 1998), Japan (Jørgensen 1994c, 2001d), British Columbia (Goward et al. 1994b, 1998; Goward & Arsenault 2000; Jørgensen 2000d), Oregon, Washington (Maass 1983; McCune & Geiser 1997; McCune et al. 1997; Brodo et al. 2001; Geiser et al. 2004), Jamaica, Guyana, Ecuador (Jørgensen & Arvidsson 2001, 2002), Venezuela (Marcano et al. 1996), Brazil, the Galapagos Is (Jørgensen & Arvidsson (2002), and Chile (Galloway & Quilhot 1999).

Palaeotropical

Illustrations : Galloway & Jørgensen (1975: 140, pl. 1); Goward et al. (1994b: 53; 89, fig. 4A); Jørgensen (2000d: 673, fig. 5); Brodo et al. (2001: 310, pl. 323).

Erioderma sorediatum is characterised by: the corticolous habit; the small, incurling lobes, exposing the white lower surface (becoming sulphur yellow on storage in the herbarium); and the marginal, bluish, limbiform soralia. It is not known fertile either in New Zealand or throughout its range. It is often sympatric with E. leylandii. It is distinguished from the superficially similar and commonly sympatric Leioderma sorediatum, which has arachnoid hairs and a negative reaction with Pd.