Flora of New Zealand Series

≡Parmelia gayana Mont., Annls Sci. nat. Bot. 3: 58 (1849).

Description : Flora (1985: 152).

Chemistry : TLC−, all reactions negative.

N: Northland (near Whangarei, Rakitu I.), Auckland (Waitakere Ra., Rangitoto I.), South Auckland (Red Mercury I., Kaueranga Gorge near Thames, Coromandel Peninsula, Mangaotaki Valley Pio Pio, Waiotapu Valley), Hawke's Bay (Kuripapango), Taranaki (Mt Taranaki), Wellington (Kaimanawa Ra., Desert Road, Tararua Ra.). S: Nelson (Anatoki River, Lake Rotoroa, St Arnaud, Maruia River, Stockton Plateau), Westland (Lake Kaniere, Kumara, Greymouth, McArthur Flats Arawata River), Canterbury (Lewis Pass, Arthur's Pass, Sebastopol, Waihi Gorge), Otago (Maitland Valley Lake Ohau, Dan's Paddock near Paradise, Trotter's Gorge, Leith Valley Dunedin, Mt Cargill, Kaka Point) Southland (Doubtful Sound, Dusky Sound). St: (Port Pegasus). Ch: (Owenga). A: (Erebus Cove). Widely distributed in humid habitats in moderate to deep shade on twigs or small branches of mainly successional shrubs (Coprosma, Kunzea, Leptospermum, Lophomyrtus, Nothofagus, Olearia, Pennantia, Pseudopanax, Pseudowintera etc.) s.l. to 900 m. Known also from E Australia, Tasmania, southern South America and Tristan da Cuñha (Arvidsson & Galloway 1981: 47–48; Kantvilas 1990c; Jørgensen & Galloway 1992b: 250; McCarthy 2003c, 2006).

Austral

Illustrations : Santesson (1944: pl. 4, fig. 3 – as Parmeliella gayana); Keuck (1977: pl. 146 – as Parmeliella gayana); Arvidsson & Galloway (1981: 36, fig. 5E, F); Lumbsch & Kothe (1992: 280, fig. 2); Malcolm & Galloway (1997: 67, 98, 117, 175); Kantvilas & Jarman (1999: 63); Malcolm & Malcolm (2000: 47, 107).

Exsiccati : Vězda (1996a: No. 222).

Degelia gayana is characterised by: its whitish grey lobes with transverse, concentric ridges and without isidia; numerous apothecia without any secondary thalline margin.